Mods began on the Venom X22R 250

[JerryHawk250]

The mods began on the Venom X22R 250 this morning. I started by stripping her down naked.:hehe: First was to remove the ehaust. Really easy once all the fairings were removed and that was easy also. I located the cat using a long stiff wire. Once located I used a cut off wheel on my grinder and cut around the cat. The cat itself was actually installed backwards according to the big flow arrow stamped on it. The cat came out easy compared to the one on my Hawk. I welded it back with my mig welder on the lowest setting so I wouldn't burn a hole through it. Anybody who has welded on this Chinese steel know exactly what I'm talking about. Lol after grinding the weld and painting I wrapped it with header wrap then reinstalled. I also had to grind the welds down inside the header pipe. Defiantly some restriction there. The bike comes with a good free flowing muffler so no need to replace it. Bike was no louder than it was before and still has that deep tone rumble.:D

[JerryHawk250]

More pics....

[GetnGhost]

Congrats on cat removal, I wish I had a welder! I noticed today after one minute of running my TBR7, that the cat was glowing red. Is that normal?

[JerryHawk250]

The bike comes this a pz30 pumper carb which really has good throttle response. This carb didn't have the usual tamper proof screws but regular Phillips head. It came with a 98 main installed so I installed a 110 for starters. I didn't change the pilot as it was running fine with whatever was installed. The idle mixture screw did have the tamper proof cap so I drilled it out and actually came out with the drill bit. The idle mixture screw was barely open maybe 1/8 turn. I just set it 1 1/2 turns out from lightly seated. It started right up and idled smooth so didn't touch it. Later after I did all the other mods I took a little ride. Huge difference in throttle response and power. I'll have to change to a 115 main as it bogged a little around 7000 rpm's. Still need to break in before I beat on it. I did get up to 71mph briefly and wasn't full throttle. I'll have to check the accuracy with my GPS.

[JerryHawk250]

Congrats on cat removal, I wish I had a welder! I noticed today after one minute of running my TBR7, that the cat was glowing red. Is that normal?
If you haven't tuned the carb yet it will glow red because it's running super lean from the factory.

[JerryHawk250]

After the carb tuning and replacing the plug with a NGK I installed the oil cooler while I had the fairing removed. I had plenty of room for the install unlike the Hawk which was kind of limited on space to install. I didn't take pictures but did take video that I'll post tomorrow or Monday. You can see the cooler in the previous picture I posted.

[JerryHawk250]

I also installed LED headlight while it was naked. I did have to take my rotary tool to make the hole a little larger to make them fit . so much brighter than stock. I installed my alarm then put all the fairings back on. I had a wedding to go to so I'll finish up the rest of the mods tomorrow. I did take the bike to go to the wedding.:D
Her she is all buttoned up ready to go.

[wheelbender6]

A sportbike is a great way to arrive at a wedding.

[JerryHawk250]

I think the bike got more attention at the reception than the bride and groom. Lol

[da4design]

it really is a very nice looking bike!

[JerryHawk250]

it really is a very nice looking bike! Thanks, out all the colors I think the black looks the best. :thanks:

[China Rider 27]

Congrats! Sweet ride, I am jealous! You have to do some speed testing when it is broken in I am so curious. 90 mph in the add!

[zero_dgz]

Congrats on cat removal, I wish I had a welder!


I bit the bullet a few weeks ago and bought the Harbor Freight "Titanium" flux welder. It's routinely on sale for $170.


I'm not a complete muppet at metalwork; I can solder and braze quite well, and I have done a small amount of oxyacetylene welding but I have never worked with any kind of arc welder before. With no instruction other than what's in the manual and fooling around with it for an hour or two, I was able to jump right to patching a big-ass hole in the exhaust pipe of my friend's SSR dirt bike, and replacing the welded on nuts that hold the heat shield on. It weren't pretty, but it's holding.



The HF welder is definitely capable of doing exhaust work, especially if you don't care what the weld looks like! No gas, no tanks, no hoses, nothing to worry about with the flux core model. If you only use it twice a year (as it looks like I will) it'll be sitting on the shelf waiting for you when you need it, ready to rock and roll...

[culcune]

Congrats! Sweet ride, I am jealous! You have to do some speed testing when it is broken in I am so curious. 90 mph in the add!

I wish he had broken it in BEFORE modding it to get baseline numbers.

[China Rider 27]

Here's the automatic version. albeit not broken in. Interesting no shift revs direct drive it appears and seems to work pretty good.

https://www.youtube.com/watch?v=Nn4RCxyWB-8

[JerryHawk250]

Congrats! Sweet ride, I am jealous! You have to do some speed testing when it is broken in I am so curious. 90 mph in the add!

It might do the 90 mph indicated on the speedometer but it might be more like 80. Confirmed today with my GPS app that the speedometer is off 10 mph at 71 mph indicated and was doing 61 GPS. I'm checking now if there's a way to calibrate it. The same speedometer is sold on eBay and Amazon. There has to be some instruction somewhere. If not there is a inline calibrator for $70. I installed the 34 tooth sprocket this morning and took a ride after the rain stopped. Cruising 55 to 60 mph GPS with ease. I think I have just over 70 miles on it.

[JerryHawk250]

Today started off to a bad start. I woke up this morning to pour down rain. When it finally slacked off to a drizzle I headed out to the shed to finish up the mods. I took lots of pictures and video of the whole process on replacing the sprocket or so I thought. When I took a break for lunch I pulled out my phone to look at them. Wtf all the files were curupt. >:( was I pissed. I pulled the memory card out the phone then stuck it back in and now it fine. So I shot some pics and video just explaining what I did. Me and cameras don't get along. Always something getting messed up. I'll try to put it all together tonight and post tomorrow.

[China Rider 27]

The 80's are most likely in play and at that speed will be much more comfortable and controllable than the HAWK or similar. Is that a CG engine?

[China Rider 27]

Sorry to hear about the video. Look forward to seeing the mods.

[JerryHawk250]

The 80's are most likely in play and at that speed will be much more comfortable and controllable than the HAWK or similar. Is that a CG engine?
This is way more comfortable and controllable than the Hawk but then again I wouldn't take this bike off road. Lol It is a CB engine.

[JerryHawk250]

Finally had time to edit and upload to YouTube. I lost a good bit of video and pictures from yesterday because of a memory card issue with my phone.
https://www.youtube.com/watch?v=C8p0-_GgW_A

[China Rider 27]

Excellent. The braking hardware looks massive, just what you need for the street. Looks like a 520 chain. What was the stock sprocket tooth counts and what did you mod too? I'm sure your looking for some new buffing wheels for your WEN!

[JerryHawk250]

Excellent. The braking hardware looks massive, just what you need for the street. Looks like a 520 chain. What was the stock sprocket tooth counts and what did you mod too? I'm sure your looking for some new buffing wheels for your WEN!
Brakes work great. Lots of stopping power. It has the 428 chain but looks heavier than what had come on my Hawk. It was even well lubricated. When I checked the wheel bearings they were also well greased. Not typical of most Chinese bikes. The stock sprocket was a 42 tooth which I found was too low geared for a street bike. I installed a 34 tooth which puts it just slightly higher gear ratio than my Hawk.

[culcune]

What aftermarket sprockets does this use? Usual model found for old Honda dual sports like found on most every Chinese bike?

I do wish you had kept the bike bone stock for the first few hundred miles to get baseline figures. Oh well, it will be nice to see what a slightly modified bike can realistically do.

[imapdog]

jerry just may be the first to change out the rear sprocket on these. :clap:

[JerryHawk250]

What aftermarket sprockets does this use? Usual model found for old Honda dual sports like found on most every Chinese bike?

I do wish you had kept the bike bone stock for the first few hundred miles to get baseline figures. Oh well, it will be nice to see what a slightly modified bike can realistically do.
The JTR242 Sprocket will fit but only comes in 50 and 53 tooth. I had one custom made for $31 shipped. I didn't get it with the holes drilled in it because I wasn't sure of the bolt hole size as I ordered it before the bike arrived. You can get anything you want made here fairly cheap.
https://shop.pbisprockets.com/product.sc?productId=503

[Weldangrind]

I recommend a swingarm stand for such repairs and mods.

[RedCrowRides]

"I recommend a swingarm stand for such repairs and mods."



How true ! Somebody send JerryHawk250 a plastic milk crate ! :)

[JerryHawk250]

I already have a center stand planned for it. It has the mounting tabs for it. I'm looking into getting one for the X22 125cc. It should fit because the frames are almost identical. If not I'll fab one up. Piece of cake. :) Besides the swing arm stand and milk crate are a little bulky to carry around on the bikes if I needed it on side the road. :lmao:

[OneLeggedRider]

I'm not crazy about the muffler. What was the shipping weight and how does it handle the twisties and does it feel stable at higher speeds?

[JerryHawk250]

I'm not crazy about the muffler. What was the shipping weight and how does it handle the twisties and does it feel stable at higher speeds?
The muffler is actually a good free flowing one. No baffles. You can see straight through it. Shipping ticket said 265lbs. Box it came in stated 285lbs. I'm going to weigh it when I get a chance. This bike handles the twisties way better than much Hawk and I lean that one over pretty far. I wore the tits down on the chicken strip so yeah it handles well. ;) I've only gone a little over 60mph GPS and feels so much more stable than the Hawk. I've only got just a little over 70 miles on it so still breaking it in. I was going to ride it to work today but something about mid 30s temps changed this southern boys mind. lol Saturday and sunday look real nice so i'll rack up some miles over the weekend.

[JerryHawk250]

It's Mardi Gras here in South Louisiana so had a day off. I installed the SpeedoDRD speedometer calibrator. This device is awesome. Speedometer was 17.2% off and I got it dead on accurate. I put 138 miles on it today. The engine is starting to loosen up. I hit 73mph and still had a little throttle to go. I only have about 335 miles on her. I also swapped from a 110 to 108 main. I was getting a slight miss around 7000 rpm's. With the 108 I hit the rev limiter at around 8000. 75 to 80 mph should be no problem. I'll put some more miles on her this weekend and try to do a top speed run. When I got home I decided to do a partial fender delete. That was way too long for my liking. Also relocated the reflector because the local PD are anal about it. Easy fix with my Wen rotary tool.;)

[wheelbender6]

We had our Mardi Gras parades on Saturday, so no day off for Texas Cajuns. It was a beautiful day, none the less.
- You jetted down from 110 to 108 after ditching the exhaust baffle?

[JerryHawk250]

We had our Mardi Gras parades on Saturday, so no day off for Texas Cajuns. It was a beautiful day, none the less.
- You jetted down from 110 to 108 after ditching the exhaust baffle?
Stock jet was a 98. I installed the 110 after the exhaust mod. 110 was just a tad rich.

[JerryHawk250]

I ordered a set of Plate lights like these (https://www.amazon.com/gp/product/B07TTL15LX/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1)to get rid of that huge light hanging out the rear.

[imapdog]

I ordered a set of Plate lights like these (https://www.amazon.com/Motorcycle-License-Plate-Bulbs-Waterproof/dp/B07MYXNLZ5/ref=sr_1_12?crid=2WOT7SW3BRUUD&keywords=motorcycle+license+plate+light&qid=1582727508&sprefix=morcycle+licence+pla%2Caps%2C177&sr=8-12)to get rid of that huge light hanging out the rear.

kewl beans!
the wires are very thin and takes a surgeon to splice them. you wont think they will conduct electricity bc they are so thin, but they will work. the only catch to them is either install quick disconnects or plan on cutting them every time you change the plates or relocating the plate mount. that's in case you were actually using them to mount the plate. some peeps use these on the body paneling too.

[JerryHawk250]

kewl beans!
the wires are very thin and takes a surgeon to splice them. you wont think they will conduct electricity bc they are so thin, but they will work. the only catch to them is either install quick disconnects or plan on cutting them every time you change the plates or relocating the plate mount. that's in case you were actually using them to mount the plate. some peeps use these on the body paneling too.

I'll probably install bullet connectors and hook into the original connectors on the bike. Plates are permanent in Louisiana. We just replace the sticker when expired.

[cycleway4]

Jerry...just catching up here on your X22R purchase,..and posts. That's a great looking bike for sure..good luck with it.

[JerryHawk250]

I finished up the partial fender delete. I removed the existing licence plate light and installed the two LED lights. Looks much better.

[JerryHawk250]

I also installed a helmet lock. One from a M-07 fits perfect.

[Keith]

I like that, I need to install a lock on my bike, some of the places I park, I don't trust my helmet outside hanging on the bike... lol I bring it in the stores with me.

[Keith]

BTW, do you know if we're required to have a light on the plate in Louisiana during the day? I know it's not likely it will be noticed and I don't ride at night much, but if it's a problem I need to get one on the RXB-250L... One less reason to get stopped, and right now the only thing that won't pass if they do. I imagine some of the local cops would be happy to have a reason to write a ticket and make the stop worth their while... ;) I'll eventually put a couple of those lighted bolts on the plate like that, just haven't ordered them yet.

That said, I had a full tail delete on my GSX-R and ran it like this for a couple of years and never got stopped. I didn't even have rear blinkers, they were integrated in the tail light and definitely not DOT... lol

[Chrisguga]

Keep the ideas coming, Jerry! I just ordered that helmet lock and I plan to emulate your mods just about step for step. :cheers:

[JerryHawk250]

Here's a list of mod parts and links.

Jets https://www.ebay.com/itm/173334772965
Header Wrap https://www.amazon.com/gp/product/B07JJPLYDT/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Alarm https://www.amazon.com/gp/product/B01IVIMR7Q/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Oil Cooler https://www.amazon.com/gp/product/B07ZKXDD3W/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Phone Mount
https://www.amazon.com/gp/product/B07W1GJB7V/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Grab On Grips https://www.amazon.com/gp/product/B000WJAH5M/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
LED Headlight (Required some modification to housing) https://www.amazon.com/gp/product/B07TJGT3LT/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
NGK 2202 Spark Plug https://www.amazon.com/gp/product/B000CSGWZC/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Strobe Controller for Brake Light https://www.amazon.com/gp/product/B01HPSZZXQ/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
Helmet Lock https://www.amazon.com/gp/product/B07NL8F66G/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
LED License Plate lights https://www.amazon.com/gp/product/B07TTL15LX/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
SpeedoDRD-U1 https://www.ebay.com/itm/KAWASAKI-2005-2006-NINJA-ZX6R-RR-SpeedoDRD-U1-SPEEDOMETER-SPEEDO-CALIBRATOR/271499866672?hash=item3f36a73230:g:lJcAAOSwHwddTY3 v

[JerryHawk250]

BTW, do you know if we're required to have a light on the plate in Louisiana during the day? I know it's not likely it will be noticed and I don't ride at night much, but if it's a problem I need to get one on the RXB-250L... One less reason to get stopped, and right now the only thing that won't pass if they do. I imagine some of the local cops would be happy to have a reason to write a ticket and make the stop worth their while... ;) I'll eventually put a couple of those lighted bolts on the plate like that, just haven't ordered them yet.

That said, I had a full tail delete on my GSX-R and ran it like this for a couple of years and never got stopped. I didn't even have rear blinkers, they were integrated in the tail light and definitely not DOT... lol
It's required but if you are riding during the day I guess they will never notice. lol It's good to have them on for night time riding. They will make you more visible from behind. Just this morning on my way to work I came up behind a bike with a fender delete. All the guy had was one little dim red light for a brake light. Guy was on a black bike and dressed all in black. I can see this guy will get rear ended eventually. By law here in Louisiana you must have Head lights, Turn signals, brake and running lights, license plate light and yes all the reflectors that everyone pulls off. Especially the one in the rear in case the break light malfunction. You have to make yourself as visible at night as possible.

[Keith]

I ordered a pack of 4 lights/bolts last night for about $10 shipped from eBay, hard to beat that! lol

[Chrisguga]

Here's a list of mod parts and links.

Jets https://www.amazon.com/gp/product/B077BVZVQZ/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Header Wrap https://www.amazon.com/gp/product/B07JJPLYDT/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Alarm https://www.amazon.com/gp/product/B01IVIMR7Q/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Oil Cooler https://www.amazon.com/gp/product/B07ZKXDD3W/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Phone Mount
https://www.amazon.com/gp/product/B07W1GJB7V/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Grab On Grips https://www.amazon.com/gp/product/B000WJAH5M/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
LED Headlight (Required some modification to housing) https://www.amazon.com/gp/product/B07TJGT3LT/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
NGK 2202 Spark Plug https://www.amazon.com/gp/product/B000CSGWZC/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Strobe Controller for Brake Light https://www.amazon.com/gp/product/B01HPSZZXQ/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
Helmet Lock https://www.amazon.com/gp/product/B07NL8F66G/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
LED License Plate lights https://www.amazon.com/gp/product/B07TTL15LX/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Thanks Jerry. Didn’t you also correct the speedo? Can you link the item you used for that? Thanks in advance! Amazon is loving me lately. I’m basically ordering all of that.

[JerryHawk250]

I knew I was forgetting something. Lol Added to the list.

[JerryHawk250]

Keep the ideas coming, Jerry! I just ordered that helmet lock and I plan to emulate your mods just about step for step. :cheers:

When are you expecting delivery?

[Chrisguga]

When are you expecting delivery?

The shipping company called and said they’re delivering it on Friday around 6pm. They’ll give me a call a half hour in advance. I work Saturday so I won’t be able to start putting it together until Sunday afternoon.

I ordered this helmet on Amazon and this jacket and set of gloves used (not the helmet in the pic) for putting around town. It has armor in the chest, back, elbows, and forearms. The gloves have armor on the knuckles.

My coworkers are freaking me out about all their motorcycle crash stories involving former coworkers and friends so I’ll probably spring for something like the Aerostich Roadcrafter R3 that’s waterproof and can be worn over clothes. I sent in a sizing request today.

[cbrfxr67]

I totally missed this thread! Good stuff here Jerry! Can you give an overall review of it? If you posted somewhere else please point me to that. Really interested in reading your detailed opinion of it. Great looking ride!

[JerryHawk250]

I totally missed this thread! Good stuff here Jerry! Can you give an overall review of it? If you posted somewhere else please point me to that. Really interested in reading your detailed opinion of it. Great looking ride!
I plan on doing a full review. I just wanted to get some miles on it before I do. So far I am really enjoying this bike. So much more road friendly than the Hawk.

[JerryHawk250]

The shipping company called and said they’re delivering it on Friday around 6pm. They’ll give me a call a half hour in advance. I work Saturday so I won’t be able to start putting it together until Sunday afternoon.

I ordered this helmet on Amazon and this jacket and set of gloves used (not the helmet in the pic) for putting around town. It has armor in the chest, back, elbows, and forearms. The gloves have armor on the knuckles.

My coworkers are freaking me out about all their motorcycle crash stories involving former coworkers and friends so I’ll probably spring for something like the Aerostich Roadcrafter R3 that’s waterproof and can be worn over clothes. I sent in a sizing request today.
Don't listen to those knuckle heads. lol They're just jealous they don't ride. ;) haha. I've been riding since the 70's. My one and only crash was on my first bike at the age of 18. That's only because I was acting the dumb a** and not paying attention. Just ride the bike like you're invisible and no one can see you. Because that's what it feels like some time. :hehe:

[JerryHawk250]

Well I discovered a few things about the new bike tonight. First off it has magnetic rubber tires. I picked up a nail the last time I road and had to fix a flat before I could ride tonight.>:( My neighbor just changed his roof and I found a bunch more nails on the road.

Now the good thing I found. The bike does come with a performance CDI like Venom advertises . I finally put 500 miles on the bike so did a quick WOT run. I took the bike over 10,000 rpm's 1st, 2nd and 3rd and never it the rev limiter. I shut it down when I hit 75mph (gps) in 4th. It was dark so didn't want to go any faster. The new LED headlights really light up the dark. Bike runs so much better now I got some miles on it.

[Megadan]

Well I discovered a few things about the new bike tonight. First off it has magnetic rubber tires. I picked up a nail the last time I road and had to fix a flat before I could ride tonight.>:( My neighbor just changed his roof and I found a bunch more nails on the road.

Now the good thing I found. The bike does come with a performance CDI like Venom advertises . I finally put 500 miles on the bike so did a quick WOT run. I took the bike over 10,000 rpm's 1st, 2nd and 3rd and never it the rev limiter. I shut it down when I hit 75mph (gps) in 4th. It was dark so didn't want to go any faster. The new LED headlights really light up the dark. Bike runs so much better now I got some miles on it.

I would go sweep up a bunch of nails and toss them back in said neighbors driveway.

The no rev limiter thing is a bit risky on their part. The wrong person could easily wreck a motor if they don't pay attention.

[Chrisguga]

Here's a list of mod parts and links.

Jets https://www.amazon.com/gp/product/B077BVZVQZ/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Header Wrap https://www.amazon.com/gp/product/B07JJPLYDT/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Alarm https://www.amazon.com/gp/product/B01IVIMR7Q/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Oil Cooler https://www.amazon.com/gp/product/B07ZKXDD3W/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Phone Mount
https://www.amazon.com/gp/product/B07W1GJB7V/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
Grab On Grips https://www.amazon.com/gp/product/B000WJAH5M/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
LED Headlight (Required some modification to housing) https://www.amazon.com/gp/product/B07TJGT3LT/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
NGK 2202 Spark Plug https://www.amazon.com/gp/product/B000CSGWZC/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Strobe Controller for Brake Light https://www.amazon.com/gp/product/B01HPSZZXQ/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
Helmet Lock https://www.amazon.com/gp/product/B07NL8F66G/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
LED License Plate lights https://www.amazon.com/gp/product/B07TTL15LX/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
SpeedoDRD-U1 https://www.ebay.com/itm/KAWASAKI-2005-2006-NINJA-ZX6R-RR-SpeedoDRD-U1-SPEEDOMETER-SPEEDO-CALIBRATOR/271499866672?hash=item3f36a73230:g:lJcAAOSwHwddTY3 v
Jerry, can you confirm the speedo device we need is the Kawasaki one you linked?

Also, is the correct halogen bulb the H4/9003? I want to confirm before I order.

:edit: That’s awesome news about the CDI. Do you plan on raising the compression and porting the head on this bike? Do you have to run 93 octane on the Hawk? Our only ethanol free gas around here is 87 octane, but I’d like to work on the intake, exhaust, jetting, head, etc over the winter and see just how fast I can make the bike.

[JerryHawk250]

Jerry, can you confirm the speedo device we need is the Kawasaki one you linked?

Also, is the correct halogen bulb the H4/9003? I want to confirm before I order.

:edit: That’s awesome news about the CDI. Do you plan on raising the compression and porting the head on this bike? Do you have to run 93 octane on the Hawk? Our only ethanol free gas around here is 87 octane, but I’d like to work on the intake, exhaust, jetting, head, etc over the winter and see just how fast I can make the bike.
The U1 is a universal unit. Not sure why they have Kawasaki in the listing. That is the one I have. It can be installed on any bike. It's not plug and play. You will have to cut the sensor wire and use the supplied bullet connectors. Very easy to install. They have a few YouTube videos on how to install and calibrate. It even display you max speed.
The H4/9003 is correct. The bulb I have linked will require some nodding of the housing. Goid bright bulb but would look for one with a smaller diameter bulb.
I run 91 octane on my Hawk and 87 on the X22R. All ethanol free. I do plan on doing the head work on this bike too.

[JerryHawk250]

Just want to pass on some useful information on adjusting the headlight height on the X22R or even the X22 125cc. After replacing the headlights with the LED I noticed my headlights were pointing almost directly in front of the bike. I'm not sure if the stock bulbs did the same as I replaced the bulbs the following day. To adjust the headlights there is a hex head screw on the back side of the housing in the center. The first time I tried to adjust it the screw did nothing. So Saturday I figured i'd pull the housing out and shim it. Well it turns out you have to turn the screw counterclockwise to raise the height of the headlights. :doh: Completely opposite of what my brain was telling me. lol

[JerryHawk250]

Just an update to those who are concerned with top speeds. I spent the day riding yesterday. I took the Hawk out for a few miles Saturday morning around town. Made me realize how much low end torque the ported and decked head added. :D I need to do the same with the X22R. After lunch I took the X22R out for a long ride out in the country on the twisties. Man this bike is fun to ride. I hit a straight section of road and decided to see what she got. I hit 79 mph before I had to slow down for a curve. I only have a little over 600 mile on her and can feel it getting stronger as she starting to loosen up. I have a pe30 carb waiting to be put on for when I do the head work but may end up installing it before then just to see if it improves performance on the stock engine. Well so much for the chitchat. Another beautiful day on the bayou. Time to get out and ride. :yay:

[culcune]

Keep up the riding, the posts, and most importantly--the videos! :tup:

[Chrisguga]

Wow, I definitely need to rejet. I could barely get 60 out of mine!

I’ll have about an hour free to work on it this evening. I wonder if that’s enough time for a carb newbie to get a jet swap done?

Never mind. I found a good instructional video on YouTube and I’ll definitely save that for another day. I’ll just install the phone mount tonight. lol

Here’s the clip for anyone interested. I believe this is the same carb on the X22R.
https://youtu.be/juNez9Eeo4s

[JerryHawk250]

The rejetting is a must but also getting some miles on it and breaking the engine in. No need to shim the needle. Start with a 105 main and idle mixture 1 1/2 turns out from lightly seated. That should get you close. I'm running a 108 main but i did remove the cat. Now back to my regularly scheduled program for today. Back out for another ride.

[JerryHawk250]

Even after replacing the starter on my riding mower, repairing my push mower and cutting my grass I still found time to swap out my carb to the PE30. The intake Herbie sent me wouldn't work so swapped intakes with the Hawk which fit better so all worked out.:tup: It took me a while to get it tuned. I started with a 38 pilot but would idle rough. I tried a 40 and a 42 and made no difference. I noticed if I shut off the fuel it would start running smoother and faster. Turned out the float was set too high so once I got that set the 42 pilot worked perfect at 1 3/4 turns out. I installed a 110 main and took her out for a ride. The engine will rev to 10k quick. Throttle response is so much better. I decide to take it out on the highway for about 10 or 11 miles. I was able to cruise between 70-75 mph easily. I took her up to 81mph briefly. Did I mention I love this bike. Lol :D
I also removed the air box and installed a Nibbi pod filter. I also hooked up the remote choke. That wasn't a direct fit. I had to cut the lead ball off because it was too big and I soldered a small ball on the end and is working so far.

[Megadan]

The jetting is at least consistent. I can float between a 35 or 38 pilot depending on the air temps. I still think my jetting is thrown off by the longer intake I am using though.

So, without any head work, would you say the PE30 is a good upgrade?

[JerryHawk250]

The jetting is at least consistent. I can float between a 35 or 38 pilot depending on the air temps. I still think my jetting is thrown off by the longer intake I am using though.

So, without any head work, would you say the PE30 is a good upgrade?
Yes it's definitely an improvement. Much better throttle response.

[OneLeggedRider]

Taking parts off the Hawk to make this bastard child run.. for shame for shame.. Jerry you know if you need any help or counseling I'm only a phone call away. :tup:

[Megadan]

Yes it's definitely an improvement. Much better throttle response.

I know it's an OHC engine and not the OHV CG of the Hawk, but I would be pretty confident in saying the PE30 would be good even for a Hawk without any head work then. It might not be as dramatic as when I went from the PZ30B to the PE30, but I don't doubt for a second that it wasn't still very noticeable.

Besides, it is hard to argue with how easy the idle mixture and idle speed are to access.

[JerryHawk250]

Taking parts off the Hawk to make this bastard child run.. for shame for shame.. Jerry you know if you need any help or counseling I'm only a phone call away. :tup:
No shame here. I replaced the part with newer an better. ;) the new intake fit the Hawk much better.

[Chrisguga]

So is this intake, carb, and air filter setup what you’d recommend for this bike with head porting and shaving planned in the future?

Do you have links to all the parts?

[JerryHawk250]

So is this intake, carb, and air filter setup what you’d recommend for this bike with head porting and shaving planned in the future?

Do you have links to all the parts?
Yes this is the one. I bought the last one the seller had but will look for another and link it. The intake I robbed off my Hawk so I would have to find another link to that one too.

[JerryHawk250]

Here's the intake.
https://www.amazon.com/dp/B01FAGIS7U/ref=cm_sw_r_cp_apa_i_gk5DEbF8Z89TV
Filter.
https://www.amazon.com/dp/B074SKBZ3S?ref=ppx_pop_mob_ap_share
This is the carb I ordered but was sent one with out the remote choke so had to order a remote kit for it.
https://www.amazon.com/dp/B084FSC6ZJ?ref=ppx_pop_mob_ap_share
Jets https://www.ebay.com/itm/173334772965

[Chrisguga]

Awesome, thanks.

Man, parts for this bike are so inexpensive. I love it.

I need to change my sprocket and get a little more power out of the bike to be satisfied though. I can’t even maintain speed on gentle hills with this current sprocket. Luckily, I think I’m leaving some power on the table running rich and I’m happy to buy aftermarket parts needed to get the power up a bit.

And you were right... the brakes are much much improved now that the oils have burned off of them.

[JerryHawk250]

Well i took the bike out for a little ride yesterday. I got about two blocks down the road and she died. I thought i might of forgotten to turn the fuel back on but not the case. I pulled off to the side of the road and she cranked right back up but would only idle and would die as soon as i would give it throttle. So I proceeded to take the carb off and open the bowl to check for trash only to discover i didn't have an Allen wrench to fit the carb screws. :doh: So i managed to limp it home at idle speed. When i got home and opened it up i found one little piece of grass that managed to find it's way into the main jet. >:( Needless to say I have included a complete set of Allen wrenches to my tool kit. :tup: No worry, I enjoyed the rest of the day riding and self isolating myself. :D I will need to fine tune my idle a little more. It seems a little rich at idle.
I took the bike to work this morning. I was planning on taking all week but the Governor ordered everyone to stay home starting tonight. I should have plenty of time to work on it the rest of the week.

[JerryHawk250]

I received and install new mirrors last night. These are real nice and heavy duty. The stock mirrors got to the point that one mirror i had to constantly adjust and the other vibrated and rattled. I'll post pictures late today when i get home of them installed. These are very tight and will no way move no mater how fast you're driving. At first it thought they were fixed because they were so hard to move. No plastic here. lol
https://www.amazon.com/gp/product/B01C0SQYUO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
https://images-na.ssl-images-amazon.com/images/I/51YXRL-lMDL._AC_.jpg

[JerryHawk250]

Here are pictures of mirrors installed.

[Chrisguga]

Jerry, you’re pretty much my test mule for X22R items. My mirrors suck too and I’m ordering these as soon as I hit “post quick reply”. lol

[JerryHawk250]

The mirrors are a little smaller that the stock mirrors but way better. They have a blue tint which blocks out the glare. And don't vibrate like stock mirrors. This is something venom will improve according to Moose.

[Chrisguga]

I ordered them. They’re surely better than stock.

[JerryHawk250]

I ordered them. They’re surely better than stock.
They sure are. They stick out a little further so you see a little better around you too.

[Chrisguga]

Jerry, does that air filter fit on the stock carb?

[JerryHawk250]

The filter is 48mm and the stock carb is 44mm. It might squeeze down enough with the clamp.

[Chrisguga]

One more question tonight...

I firmed up my front suspension and it feels better. I’m 3 clicks from the maxed out firmness setting.

The rear shock bottoms out pretty easily. Is there any way to stiffen that up?

[JerryHawk250]

There's a load adjuster on the bottom of the shock. You'll need a set of spanner wrenches.

[Chrisguga]

Thanks Jerry. You really are a huge help. The bike takes some adjustments to get it where I want it to be, but for the price, I’m enjoying it!

Plus, I don’t know what to do with myself if I don’t have a project and something I need to buy on Amazon!

[JerryHawk250]

Thanks Jerry. You really are a huge help. The bike takes some adjustments to get it where I want it to be, but for the price, I’m enjoying it!

Plus, I don’t know what to do with myself if I don’t have a project and something I need to buy on Amazon!

That's what makes these china bikes so much fun. It's kind of like buying a kit and fine tuning it to your liking for a fraction of the cost of the name brand bikes. They are very reliable. My Hawk is almost 3 1/2 years old and i have ATV well over 5 years old and neither have failed on me. This new bike is much better quality than those are. Once you change that rear sprocket out you're going to really like it.

[Chrisguga]

Yeah, I’ve been slow to change out that rear sprocket because I wanted to get the new air filter on and get it jetted a little better first. Next I’ll change the sprocket and then over the winter I will likely try my hand at head porting and also sanding it down a mm to raise compression.

[JerryHawk250]

I forgot to post the matching crank case breather filter when I removed the air box.
I also cleaned her up real good after a weeks worth of limestone dust collected on her. She cleaned up real nice.

[Psomniferum]

That's what makes these china bikes so much fun. It's kind of like buying a kit and fine tuning it to your liking for a fraction of the cost of the name brand bikes.
I bought MY Chinese bike on a whim, lol! My buddy came over on his Grom-knockoff Venom something-or-other. When I found out it was street-legal, I HAD to have one! I ordered the X22 by accident. Thought I was ordering a 3/4-size Ninja-copy and was a little disappointed in its size, considering it only had a 125 to push it. I only had it a few weeks before it was stolen. After I got it back, it was SO ugly that it took weeks before I even wanted to start fixing it. I was HEARTBROKEN! I ALMOST threw it away, I was SO upset! Now, I plan on making this bike my training bike til I feel comfortable moving up to a bigger machine.

[Chrisguga]

Did you rejet after the filter? How much bigger of a jet, if so?

[JerryHawk250]

Did you rejet after the filter? How much bigger of a jet, if so?
110 main on the PE30 carb. I never installed the pod filter on the stock carb.

[Chrisguga]

Do you feel the filter picked up some power? Noticeable?

[Megadan]

Do you feel the filter picked up some power? Noticeable?

The filter was done more due to the fact that the inlet diameter of the PE carburetor is larger than the PZ, plus the position was likely off as well meaning the stock air box is no longer useable and thus the filter was necessary. It might have been worth a tiny bit of airflow, but on its own not likely going to be a measurable difference.

[Chrisguga]

Hopefully it leans my bike out a bit. My 100 jet still has mine too rich.

[JerryHawk250]

Do you feel the filter picked up some power? Noticeable?

As Megadan stated. It's minimal but a little to here and there adds up. You will have to increase the jet size in most cases.

[JerryHawk250]

Hopefully it leans my bike out a bit. My 100 jet still has mine but rich.
Unplugging the exhaust will give you your biggest improvement.

[Megadan]

Unplugging the exhaust will give you your biggest improvement.

Yeah, and this is true for most of the bikes in the 2k price range (and cheaper). There almost always seems to be a big booger of weld at the flange end where it meets the head, and the catalyst is too small for the pipe diameter and causes a huge restriction. Remove those and you will be amazed at the difference.

[JerryHawk250]

Yeah, and this is true for most of the bikes in the 2k price range (and cheaper). There almost always seems to be a big booger of weld at the flange end where it meets the head, and the catalyst is too small for the pipe diameter and causes a huge restriction. Remove those and you will be amazed at the difference.
My Hawk wasn't too bad on the weld but this bike had huge weld in the pipe.

[Chrisguga]

I definitely plan to gut the cat soon. I plan to cut out a window to remove it rather than cut the pipe into pieces. I figure it’ll stay lined up correctly that way rather than accidentally put a little twist in it when welding it back together.

[JerryHawk250]

I definitely plan to gut the cat soon. I plan to cut out a window to remove it rather than cut the pipe into pieces. I figure it’ll stay lined up correctly that way rather than accidentally put a little twist in it when welding it back together.
If you look at the picture at the begining of this thread you'll see that you will see you need to cut in two. I put some punch marks to line it back up.

[Chrisguga]

So does the cat come out as a cylinder inside of the exhaust pipe? A pipe inside a pipe? That’s how it appears in the pic. Thanks. I may try to remove it this week.

[JerryHawk250]

So does the cat come out as a cylinder inside of the exhaust pipe? A pipe inside a pipe? That’s how it appears in the pic. Thanks. I may try to remove it this week.
That's exactly what it is. Only thing i suggest is cut it further towards the front of the bike closer to the weld . I was expecting it to be like my hawk but it's not. This was easier to remove than the hawk one for sure. You get to learn from my mistake. lol

[Chrisguga]

Hah, I appreciate the insight for sure. My good buddy is converting his HF 90 amp welder to DC and bought some good Lincoln flux core wire. He’s just waiting on the capacitor and I’ll open up the exhaust and we’ll weld it back together.

[JerryHawk250]

Hah, I appreciate the insight for sure. My good buddy is converting his HF 90 amp welder to DC and bought some good Lincoln flux core wire. He’s just waiting on the capacitor and I’ll open up the exhaust and we’ll weld it back together.

Make sure you weld it at the lowest heat setting. This high grade steel will burn through like butter.

[Chrisguga]

So you’re saying it’s not quite Detroit, made in the USofA, quality steel? lol

Thanks for the tip. We’re so used to the HF welder being so weak that we’d probably turn the thing on full tilt trying to get it to penetrate.

[JerryHawk250]

So you’re saying it’s not quite Detroit, made in the USofA, quality steel? lol

Thanks for the tip. We’re so used to the HF welder being so weak that we’d probably turn the thing on full tilt trying to get it to penetrate.

Not even close. lol I would like to find a stainless steel header pipe.

[Chrisguga]

I’m heading over tonight to play with the new welder setup. His capacitor came in today. I’m not taking the bike just yet as I don’t want to cut the exhaust up until I’m sure we can weld it back together properly.

Well, I’m taking the bike, but we’re not screwing with it just yet. lol

[JerryHawk250]

I’m heading over tonight to play with the new welder setup. His capacitor came in today. I’m not taking the bike just yet as I don’t want to cut the exhaust up until I’m sure we can weld it back together properly.

Well, I’m taking the bike, but we’re not screwing with it just yet. lol

Cool, I like to know how the conversion worked out. Practice on some of the high grade crate angle iron the bike came in. :lmao:

[Chrisguga]

We practiced on a big pry bar and also some rebar.

The 3 little welds at the very top of this first picture are the Harbor Freight wire with the welder as originally configured. The rest of the welds on this piece are with Lincoln electric flux core wire and the rectifier. The welds on the piece to the right are with those two changes plus the capacitor.

The good wire and rectifier made a solid difference and then the cap made another big jump in quality. These welds are two novices screwing around outside after having a couple beers so of course they’re rough looking.

I’m definitely going to make these changes to my welder and go with an even bigger cap than he did.

[JerryHawk250]

Looks like it worked.:tup:

[Chrisguga]

It did indeed. Paul has messed around with welding a bit more than I have as he only works 2 days per week so he’s always tinkering with his vehicles, fishing, riding jet skis, traveling, etc about 5 days per week. He was extremely impressed with the changes.

I’m trying to get him to buy a Chinese enduro, but he says his motorcycle riding days are over due to the risk involved. Pansy.

[JerryHawk250]

I’m trying to get him to buy a Chinese enduro, but he says his motorcycle riding days are over due to the risk involved. Pansy.
Pansy :lmao: Tell him to put his manties on and get him one.

[Psomniferum]

On my 2nd attempt, this is what I did with a dremel. I carved the kill-switch around the mount for the new throttle-tube. The 2nd picture is a unit I found on EBay that has everything the stock unit has except the housing for the stock throttle-tube. Therefore you wouldn't have to hack into it to fit an aftermarket throttle. I bought it for $9 + $4 shipping. I'm fitting that one next to see if I like it. I know you're not having troubles yet, but perhaps you may as I know I'm far from alone. I thought maybe you could use one of these ideas.

[JerryHawk250]

No need to double post. I've read this in your thread.:tup:

[Psomniferum]

No need to double post. I've read this in your thread.:tup:

I could see where this looks like a repeat. But the unit I found on EBay is NEW information I found AFTER that post. I ordered a unit for myself and figured the 2nd option would be more palatable for you, considering you don't have to cut anything. That's why I posted here. I'll try to be more considerate with my future posts.

I don't mean to hijack your thread, my apologies. I'm just feeling less and less foolish dumping money and time into a Chinese bike seeing that you're putting a lot of time and effort into yours. Cheers!

[TiggerOG]

Hey Jerry I was wondering if you could tell me what the bolt pattern and details are for the rear sprocket on the x22r. I have a lot of parts on order for the bike I'm about to order and might as well get one of those on order too to try out.

[JerryHawk250]

Hey Jerry I was wondering if you could tell me what the bolt pattern and details are for the rear sprocket on the x22r. I have a lot of parts on order for the bike I'm about to order and might as well get one of those on order too to try out.
It's the same as the JTR242 sprocket. 64mm center hole. 5 bolt pattern 96mm circle. 10.5mm diameter holes.

[Chrisguga]

Yep, thanks to Jerry’s specs, my new 36 tooth sprocket just came in. It looks great. Now the question is whether I can install it correctly. lol

[Baskt_Case]

Knowing this bike has the CB250 like an Orion RXB and an Apollo DB-36, what do you mostly attribute the high top speeds to? Aerodynamics? The optimized CDI? Do you think this motor is cammed the same as those other bikes? I'm curious what you achieve sitting bolt upright into a light headwind.

[JerryHawk250]

Knowing this bike has the CB250 like an Orion RXB and an Apollo DB-36, what do you mostly attribute the high top speeds to? Aerodynamics? The optimized CDI? Do you think this motor is cammed the same as those other bikes? I'm curious what you achieve sitting bolt upright into a light headwind.
A few things come into play.
1.The CB 250 OHC engine will rev higher rpm's than the push rod CG250. The CG250 has a single lobe cam which works great for low end power but not in the higher rpm's.
2. Aerodynamics for sure. And tucking behind the windshield give an easy 3-4 mph gain.
3.Weight. This bike weighs a little over 100 lbs less than my Hawk. Shipping weight on my Hawk was 394 lbs and the X22R was 264 lbs.
4. I found the same performance mods i did on my hawk gave me more gain on the X22R than they did on the Hawk.
5. Tire size has a lot to do with it to. Smaller wheels have less mass to spin around.
6. The stock CDI on that comes on the X22R has a higher rev limiter or no rev limiter as it will rev up past 10,000 rpm's.
7. Sitting upright it will do 75+mph. I've hit 81 mph tucked and was still wanting to creep up in speed.
8. Best part about these engines are parts from the SL230 and CRF230F will work on it. I'm planning on porting the head and either deck the head or install a CRF230F 11:1 piston and installing a CRF150F Hot Cams. The cam will increase mid to high rpm power without sacrificing low end.

[Baskt_Case]

Knowing this bike has the CB250 like an Orion RXB and an Apollo DB-36, what do you mostly attribute the high top speeds to?

The CB 250 OHC engine will rev higher rpm's than the push rod CG250. The CG250 has a single lobe cam...

...This bike weighs a little over 100 lbs less than my Hawk. Shipping weight on my Hawk was 394 lbs and the X22R was 264 lbs.

I was not aware of the weight savings over the two CB powered bikes I mentioned. I think that would be the biggest part of it, as well as the smaller wheels, combined with aero. The CB Enduros seem to struggle for 70mph.

As it stands, your bike will really be cooking with a cam and piston kit. I've been following a gentleman in another group who just did the same on his DB-36 and claims the bike will power wheelie now.

[Biker_Andy]

Seem crazy that a full size X22R is so light at only 254 Lbs. Thanks for paving the way with all these mods Jerry. If Venom ever gets them Street legal in Canada I might get myself one.

[Chrisguga]

They really are good bikes. I’m absolutely loving mine. I pretty much follow Jerry’s mods as he makes good choices and has good taste! lol

[JerryHawk250]

Seem crazy that a full size X22R is so light at only 254 Lbs. Thanks for paving the way with all these mods Jerry. If Venom ever gets them Street legal in Canada I might get myself one.
You sure they are not street legal I Canada?. These bikes are shipped out of the Canada warehouse.

[JerryHawk250]

They really are good bikes. I’m absolutely loving mine. I pretty much follow Jerry’s mods as he makes good choices and has good taste! lol
:lmao: that's what my wife said.

[JerryHawk250]

Well I got the Wiseco 11:1 piston and Hot Cam ordered. Not the wait. Hopefully it all will be here Friday. I'll have a weekend project with the porting and install. :yay:

[TiggerOG]

Well I got the Wiseco 11:1 piston and Hot Cam ordered. Not the wait. Hopefully it all will be here Friday. I'll have a weekend project with the porting and install. :yay:

Gonna do the single layer gasket with the piston for the extra bump?

[JerryHawk250]

Gonna do the single layer gasket with the piston for the extra bump?

11:1 on an air cooled engine is already pushing it. It needs to be reliable as I use it for a daily drive.

[Megadan]

If anything I would spring for a thicker gasket. This is basically what I wanted to do with an re250.

[JerryHawk250]

If anything I would spring for a thicker gasket. This is basically what I wanted to do with an re250.
Yes I have the stock crf230f gasket ordered. Once I pull the head I can calculate the CR.

[Biker_Andy]

It's a lot of red tape to get a bike legal in Canada, to my knowledge CSC and CCW are the only road legal Chinese bikes. Venom talked getting a few legal years ago but nothing came of it. They only have ebikes that are street legal here.

[JerryHawk250]

It's a lot of red tape to get a bike legal in Canada, to my knowledge CSC and CCW are the only road legal Chinese bikes. Venom talked getting a few legal years ago but nothing came of it. They only have ebikes that are street legal here.
Canada must have the same EPA regulations as California.

[JerryHawk250]

It's a lot of red tape to get a bike legal in Canada, to my knowledge CSC and CCW are the only road legal Chinese bikes. Venom talked getting a few legal years ago but nothing came of it. They only have ebikes that are street legal here.
I emailed Venom. They are still waiting on approval from the government.

[Weldangrind]

In Canada, it's federal only, not provincial. You have to give a bike to them to destroy and you can't make any changes once it's accepted. If you do make production changes, you start over. As a result, few China brands have ever hit the road in Canada.

[JerryHawk250]

Well i got the piston in today. Cam will be here on Monday. :D

[wheelbender6]

Just curious. Would the hot cam work well without the higher compression piston? I guess the higher compression helps low end power that can be compromised with a long duration cam.

[JerryHawk250]

Just curious. Would the hot cam work well without the higher compression piston? I guess the higher compression helps low end power that can be compromised with a long duration cam.
There will be minimal gain . The cam works it's best for high compression and will gain more power in the mid to upper rpm's.

[China Rider 27]

Looks like that piston has some cut out for some extra lift? You should do a video on your install.

[Megadan]

The increase in static compression from the piston is often needed on more aggressive cam profiles to actually make up for the loss in dynamic compression caused by the increase in overlap or lobe center changes from said performance cam profile. If you ever get bored, take a look at some cam offerings for the automotive world and take notice of the recommended compression ratios. Get too aggressive without enough compression behind it and you can actually suffer from some fairly steep performance losses.

I am familiar with the cam that Jerry is waiting to come in. Surprisingly it has the least increase in duration of all of the cam offerings out there, but it has a healthy increase in valve lift, and the intake and exhaust lobe centerlines were moved which gives it a tighter LSA, and thus more overlap despite the lack of total duration.

It's a good combo with that 11:1 compression. Should have some really strong mid range, not lose too much down low, but it will start to wake up past 5k, be a beast from 6500rpm onward, and pull strong past 9000rpm. Torque will likely peak somewhere around 7000rpm, but be fairly strong between 5000 an 8000. With port work this combination should be able to crank out low to mid 20hp figures.

[JerryHawk250]

Looks like that piston has some cut out for some extra lift? You should do a video on your install.

I sure will. Dan explained or well. :tup: The piston and cam combo is perfect for a street bike. There are better cams suited for trail and off road that make more torque in lower and mid rpm's. Webcam have a couple of good choices. There are a few good write ups on Thumpertalk that explain all these cams and how they work.

[Megadan]

I sure will. Dan explained or well. :tup: The piston and cam combo is perfect for a street bike. There are better cams suited for trail and off road that make more torque in lower and mid rpm's. Webcam have a couple of good choices. There are a few good write ups on Thumpertalk that explain all these cams and how they work.

I prefer the Webcam 282 profile over the Hotcams, but they are honestly so close to being the same that it really wouldn't matter much. The 282 profile just has a few more degrees of duration, but the lifts are close to the same. Plus, Webcam cams cost 2 arms and a leg.

[JerryHawk250]

I prefer the Webcam 282 profile over the Hotcams, but they are honestly so close to being the same that it really wouldn't matter much. The 282 profile just has a few more degrees of duration, but the lifts are close to the same. Plus, Webcam cams cost 2 arms and a leg.
Beside being more expensive, the Webcam is also a reground stock cam where the hot cam is a new cam. I picked my cam up for just under $147. My goal was to gain performance and not reduce reliability on a daily driver. Now if I was building it just to see how much power I could get out of a 230cc I would use a different cam and bump the CR higher.

[Chrisguga]

I bought the Athena 233cc big bore kit with the 67mm piston and claimed 11.9:1 compression although it’s really a true 11:1 that can be used in 93 octane pump gas. I will install the kit along with a cam over the winter. I’m currently leaning towards the Terry Miller 2.5 ground by Web. I’m eagerly awaiting Jerry’s results!

[wheelbender6]

Can that Hotcam and piston be installed on the Hawk and similar dual sports?

[Megadan]

Can that Hotcam and piston be installed on the Hawk and similar dual sports?

No, the Hawk uses a clone of the Honda CG engine, which is a single lobe cam in block pushrod motor. The engine he is installing the cam on is known as a CB clone, which is basically a clone of the engine the CRF230F has, which is over head cam. The Hawk also has a bigger bore and a different wrist pin diameter.

If you desire a camshaft for a Hawk or other CG powered dual sport, they do exist. I have one I am going to install in my Hawk as soon as I get in a tool I am waiting on.

[Megadan]

Beside being more expensive, the Webcam is also a reground stock cam where the hot cam is a new cam. I picked my cam up for just under $147. My goal was to gain performance and not reduce reliability on a daily driver. Now if I was building it just to see how much power I could get out of a 230cc I would use a different cam and bump the CR higher.

Webcam does hardweld regrinds and then surface hardens the cams. I trust their quality to the same level as a new camshaft. That process is part of the reason they are so expensive. What I love about webcam more is that they can do a custom grind for you if you want to change something about the cam profile you are looking at for not much more money.

I know what your goals are. I think you made the right choices. :tup:

I bought the Athena 233cc big bore kit with the 67mm piston and claimed 11.9:1 compression although it’s really a true 11:1 that can be used in 93 octane pump gas. I will install the kit along with a cam over the winter. I’m currently leaning towards the Terry Miller 2.5 ground by Web. I’m eagerly awaiting Jerry’s results!

One issue I experienced when you start getting into the bigger overbores for the CRF engines is the cylinder starts to struggle to control heat so you tend to have to tune your carb pretty darn rich to keep it happy and not wreck the piston and rings. Just be aware of that with that high compression 67mm piston. You are entering the territory of engines that need frequent rebuilds.

[Chrisguga]

Webcam does hardweld regrinds and then surface hardens the cams. I trust their quality to the same level as a new camshaft. That process is part of the reason they are so expensive. What I love about webcam more is that they can do a custom grind for you if you want to change something about the cam profile you are looking at for not much more money.

I know what your goals are. I think you made the right choices. :tup:



One issue I experienced when you start getting into the bigger overbores for the CRF engines is the cylinder starts to struggle to control heat so you tend to have to tune your carb pretty darn rich to keep it happy and not wreck the piston and rings. Just be aware of that with that high compression 67mm piston. You are entering the territory of engines that need frequent rebuilds.
Interesting. I’ll have to look into that. I don’t plan to do any engine mods until the winter so I have plenty of time to think it over. I can always sell the kit on eBay to get most of my money back.

I definitely want a reliable setup as I plan to log at least 500 miles per month on the bike and often venture 1-1.5 hours from home.

[Megadan]

Interesting. I’ll have to look into that. I don’t plan to do any engine mods until the winter so I have plenty of time to think it over. I can always sell the kit on eBay to get most of my money back.

I definitely want a reliable setup as I plan to log at least 500 miles per month on the bike and often venture 1-1.5 hours from home.

It's not that they can't be reliable, I just wanted to make you aware that there is a point where you start trading minute gains for long term durability. 67mm is about the limit of what I would be comfortable with.

[Chrisguga]

I might try to look into running dual oil coolers like Jerry is on his hawk. There’s room to mount another below my current one.

Also, I wonder if something like this would work to provide data on whether I’m running in a safe range of oil temps? Looks cheap and easy.

Chrome Shorty Style Oil Tank Dipstick with Oil Temperature Gauge - Black Gauge Face - Fits 1979-2003 Harley Sportster XL and 1984-1999 Harley Softail Models - Replaces HD Part# 62668-87T (40-0361) https://www.amazon.com/dp/B07WGVVJJD/ref=cm_sw_r_cp_api_i_SCRREbY46DYEC

[JerryHawk250]

The oil cooler you have is big enough. You also don't want to block the air flow to the head and cylinder. I think I'll get another temperature/ volt meter like I have on my Hawk. I use it to monitor the head and oil temperature plus voltage.

Link: https://www.amazon.ca/Top-Gauge-Waterproof-Fahrenheit-Temperature/dp/B01M9AERIK

[JerryHawk250]

Got the bump stick in yesterday. Cylinder base gasket comes in today and i'll be ready to start working on the bike this weekend. :yay:

[Jackrides]

Your oil cooler kit included a finned canister labeled on ebay as a auxilary filter canister. Did you happen to measure the insides to find out what would fit,without causing overpressure of course. My thoughts are (if nothing better around) if it is larger than a stock screen to use a screen with smaller openings with the total area just over stock. A flow test could be done by pouring a measured amount of hot oil thru each and timing each. Thoughts? Thanks! Jack

[JerryHawk250]

Your oil cooler kit included a finned canister labeled on ebay as a auxilary filter canister. Did you happen to measure the insides to find out what would fit,without causing overpressure of course. My thoughts are (if nothing better around) if it is larger than a stock screen to use a screen with smaller openings with the total area just over stock. A flow test could be done by pouring a measured amount of hot oil thru each and timing each. Thoughts? Thanks! Jack
Personally i wouldn't want to put anything that restrict the oil flow anymore. The pump is already handling the extra volume of oil to the cooler. The canister screen is the same as the on eon the engine. The centrifugal oil filer will catch all the fine stuff. I had check my centrifugal filter on my Hawk around 5000 miles and was surprise to how little dirt was in there.

[Megadan]

Your oil cooler kit included a finned canister labeled on ebay as a auxilary filter canister. Did you happen to measure the insides to find out what would fit,without causing overpressure of course. My thoughts are (if nothing better around) if it is larger than a stock screen to use a screen with smaller openings with the total area just over stock. A flow test could be done by pouring a measured amount of hot oil thru each and timing each. Thoughts? Thanks! Jack

This post from my now missing Hawk actually shows a larger filter canister that can be used to replace the screened canister (the much larger one is the filter) and shows the stainless steel mesh filter element. http://chinariders.net/showpost.php?p=269992&postcount=300

It is not a very fine mesh, so it will still not filter fine particles, but it will catch things a bit smaller than the screen will and has a much larger area.

The catch is you have to be willing to deal with finding it and then ordering it through Taobao.

Personally, I would save your time and money and stick with the screen. The screen and oil spinner method has been used by Honda for decades on small engines, and is still being used on their 125cc bikes like the Grom. The spinner takes care of fine metallic particles, the screen protects the oil pump from larger metal particles, and the oil suspends the organic stuff. Just do regular oil changes and that motor will last quite a long time.

[Megadan]

Got the bump stick in yesterday. Cylinder base gasket comes in today and i'll be ready to start working on the bike this weekend. :yay:

:yay::yay::yay:

[Megadan]

I might try to look into running dual oil coolers like Jerry is on his hawk. There’s room to mount another below my current one.


Believe me when I say that the oil cooler you have is actually way more than enough to do the job on these little motors. My Hawk runs a bit hotter than a typical dual sport and I run the exact same oil cooler. My oil struggles to get hot on cooler days, and rarely gets hot enough to get into the "Bad" range of oil temps unless I am sitting still for several minutes on a very hot day.

As Jerry said, leave the space open so air can get to the head and cylinder more freely. I mounted mine as high as I could on my Hawk to keep that space open. Pic if interested. https://ibb.co/Nrmp12C

[JerryHawk250]

I might try to look into running dual oil coolers like Jerry is on his hawk. There’s room to mount another below my current one.

The coolers on my Hawk are smaller than what we installed on our X22R. Those two cooler are about equal in size to one of our coolers.

[Joe Schutts]

Hi Jerry,


Your link for the: SpeedoDRD-U1 is bad... Just to let you know...


Joe...


:thanks:

[JerryHawk250]

Hi Jerry,


Your link for the: SpeedoDRD-U1 is bad... Just to let you know...


Joe...


:thanks:

That's why i hate to post links. They're constantly changing. A simple search on Ebay or Amazon will bring it up. https://www.ebay.com/itm/SUZUKI-2014-V-STROM-DL1000-SpeedoDRD-U1-SPEEDOMETER-SPEEDO-CALIBRATOR/272280322763?hash=item3f652c02cb:g:oJQAAOSw5R5dQa6 x