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Search: Posts Made By: ChondaChondaChonda
Forum: Zongshen RX3 03-18-2021, 06:03 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
What's wrong with the current head? ...

What's wrong with the current head?




I've bought the AliExpress head and it seems like the same quality. (YMMV!)
Forum: Zongshen RX3 03-18-2021, 12:44 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
There is an NC250 manual in Spudriders post here:...

There is an NC250 manual in Spudriders post here:
http://www.chinariders.net/showthread.php?t=15630&highlight=nc250+manual


The hardest part is getting the rings and wrist-pin in; I did it the...
Forum: Zongshen RX3 08-23-2018, 11:26 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
283cc

283cc
Forum: Zongshen RX3 07-28-2018, 02:44 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
I think mine actually gets slightly better fuel...

I think mine actually gets slightly better fuel economy than it did stock. Perhaps the higher compression allows me to run at lower rpms more.
Forum: Zongshen RX3 07-18-2018, 04:43 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Yeah, Huck... I never imagined I'd be buying a...

Yeah, Huck... I never imagined I'd be buying a new bike- especially another NC250 based bike.



Life!
Forum: Zongshen RX3 07-18-2018, 04:12 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Thumbs Up So I was able to pick up 300kit yesterday from...

So I was able to pick up 300kit yesterday from NZBRAKELATHE and had it installed before I went to bed last night. (I sold my LXR so this kit is in my GPX Moto FSE250R)



A few pics:


13663
Forum: Zongshen RX3 06-14-2018, 11:12 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Thumbs Up Funny that you put it that way - as I was doing...

Funny that you put it that way - as I was doing the Tour of Idaho last year I kept thinking that the NC250 felt like a 2-stroker prepped for woods riding. It was why I pursued the big bore. Because...
Forum: Zongshen RX3 06-05-2018, 01:58 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
It's the "Kayo EFI" kit on Taobao. I'm told that...

It's the "Kayo EFI" kit on Taobao. I'm told that it's actually a Rojo.



There is supposed to be a new improved version out that speeds up the learning and adaptation speeds. It also has an...
Forum: Zongshen RX3 06-04-2018, 09:35 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
2LZ- I just recently purchased a GPX that has the...

2LZ- I just recently purchased a GPX that has the NC250 with a carburetor. I have not even put gas in it yet - It's identical to the one in the picture above. I will be converting it to EFI and I...
Forum: Zongshen RX3 06-04-2018, 06:09 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Thumbs Up Hammered my big bore for 9 hours yesterday and 4...

Hammered my big bore for 9 hours yesterday and 4 hours this morning. Absolutely flawless and it pulled everything I aimed it at. Lots of 2nd gear singletrack.


Lots of places it was bouncing off...
Forum: Zongshen RX3 06-02-2018, 12:12 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Yeah, the LXR and GPX are much easier to tear...

Yeah, the LXR and GPX are much easier to tear apart.
Forum: Zongshen RX3 06-01-2018, 04:30 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
I might. It depends on if a truck and a motor I...

I might. It depends on if a truck and a motor I have for sale goes quick enough.



8hrs would be ridiculous. I'm sure I can do it in 2 hrs. It's simple straightforward as a swap can be. These...
Forum: Zongshen RX3 05-31-2018, 10:23 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
That is good to hear! The little...

That is good to hear!



The little extra pep is just what this motor needed as far as I'm concerned. If I wanted way more power I would not be on a 250. It's really made the bike enjoyable to...
Forum: Zongshen RX3 05-31-2018, 10:17 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
A little over 400 miles. Mostly singletrack so...

A little over 400 miles. Mostly singletrack so slow speeds. I'd estimate around 16 hours and I'm not going easy on it at all. Loads of steep hillclimbs banging it off the rev limiter, etc.
Forum: Zongshen RX3 05-31-2018, 09:28 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Well, I have decided that I will pull the big...

Well, I have decided that I will pull the big bore piston and cylinder out of my LXR and drop it into the new GPX. I have not even put fuel in the new bike yet, so it's a brand new motor.


...
Forum: Zongshen RX3 05-30-2018, 08:42 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
I see no names mentioned. Arm chair means...

I see no names mentioned.

Arm chair means we are not there in person to know for sure what happened.

I don't know who you are or what your background is by internet-osmosis.


Please...
Forum: Zongshen RX3 05-29-2018, 02:12 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
One tip I will throw out there is to loctite the...

One tip I will throw out there is to loctite the sprocket bolts if you take them off.
Forum: Zongshen RX3 05-24-2018, 11:18 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Not sure I understand your question... ...

Not sure I understand your question...




The LXR Kayo (Rojo) EFI does use a high quality O2 probe for feedback, as does the RX3's Delphi EFI.


Any chance you could get us a better price...
Forum: Zongshen RX3 05-23-2018, 01:36 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Yes. That is the one I have - but they didn't...

Yes. That is the one I have - but they didn't come with the regulator back then. Not sure why they added it.



I took some pictures of it as I took it apart and posted them in this thread:
...
Forum: Zongshen RX3 05-23-2018, 11:45 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Juanro- I believe the Kayo system will work with...

Juanro- I believe the Kayo system will work with your flywheel. I'd be happy to pull the cover off and snap a picture if you need confirmation. My bike is the Kayo / Rojo system on the LXR 250.

...
Forum: Zongshen RX3 05-22-2018, 10:10 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
I did quite a bit of tuning on Delphi systems a...

I did quite a bit of tuning on Delphi systems a few years back.

After it warms up-t he bike will usually go into "Closed loop" at a moderate throttle opening and RPM- this is where it looks at the...
Forum: Zongshen RX3 05-22-2018, 09:21 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Thumbs Up You can spank the GSXR!! If the...

You can spank the GSXR!!




If the route is off-road and filled with whoops and rocky climbs...maybe.
Forum: Zongshen RX3 05-19-2018, 11:20 AM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
A kit that includes the following (like a big...

A kit that includes the following (like a big bore refresh) might be a good seller:


1. Big bore head gasket
2. Ring set
3. New base gasket



Are you hearing anything about performance...
Forum: Zongshen RX3 05-17-2018, 08:37 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Any luck finding an NC250 stroker crankshaft??

Any luck finding an NC250 stroker crankshaft??
Forum: Zongshen RX3 05-17-2018, 03:11 PM
Replies: 509
Views: 92,208
Posted By ChondaChondaChonda
Well, the whole yoycart snafu seems to have...

Well, the whole yoycart snafu seems to have worked out.


I ended up with 2 in my cart due to their website not liking my browser. I was able to get one into the hands of a fellow NC250 guy after...
Showing results 1 to 25 of 42

 
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