Possible replacement CDI for Sierra?!
 

Hy fellow riders!
Maybe im wrong and maybe this could work.
Could these two CDI-s be compatible?!
First one is for Lifan 150cc pit bike.Its a 4 stroke horizontal oil cooled engine.Wiring diagram is for Lifan CDI.

http://i1237.photobucket.com/albums/...94355633_o.jpg

http://i1237.photobucket.com/albums/...lifan150cc.jpg


Here is wiring diagram for Zong Sierras CDI - 200cc,4 stroke,air cooled engine. Sockets (harness) is the same.Ignore the titles for wire colors.

http://i1237.photobucket.com/albums/.../zong200cc.jpg


I read somewhere on the forum that CDi costs aprox 25$ in USA.
Here in Croatia the price is 105$! 8O
Well i need a spare one and i cant find any of them for Zong on ebay(and dont wanna spend 100$ in Croatia for the same thing :) )...
So if this could work ill buy one from ebay (20$),change wire positions in the Zongs socket (harness?) to match Lifans CDI pins and test it.What do you think? :?
Greetings!

Re: Possible replacement CDI for Sierra?!
 

Nice find, Azriel! :) It appears to me the Lifan CDI unit will work for your Zong, provided you wire the pins correctly. :) You could probably also use the Lifan regulator/rectifier, and the Lifan ignition coil. ;) Please keep us updated regarding your experiment. If the Lifan CDI unit doesn't work for you, I will be happy to ship you a Zongshen CDI unit from the United States. :)

Spud :)

Re: Possible replacement CDI for Sierra?!
 

I sure will keep updating you on this one.
I was targeting for your opinion in this post :D !
Soon im going to buy one on ebay and when it arrives its going straight from the package into Zong for testing...
Thanks for the tips for rectifier and ignition coil!
Thanks for the offer to send one Spud, appreciate that. :)

Re: Possible replacement CDI for Sierra?!
 

You're welcome. :) I eagerly await your future updates on this project!

Spud :)

Azriel,

If you have time, will you please post the links for the websites where you obtained the two wiring diagrams? I am especially interested in the Lifan, 150cc, pit bike wiring diagram. Thank you. :)

Spud :)

Wiring for 8-pin Lifan CDI i found on -www.monkeybiker.net- forums,electrics section of the forum.Well, the site is swedish i think, but the headlines are in english...Was looking for a time until i found this site with wiring for Lifan.This is only what i found for Lifan wiring,dont have any other diagrams for Lifans yet. If i found any i will post them.

Zongs wiring diagram i made at home,using service manual for Zong to determinate wire colors and then looking at the CDI socket to determinate pin positions.
I hope this helps somebody... :)

Thank you, Azriel. :) I own the Zongshen wiring diagram in several forms, and I found the information for the Lifan 150, wiring diagram. However, I can't find these wiring diagrams in the format you provided in this post. ;) Did you create the diagrams you posted? If so, what computer program did you use to create these wiring diagrams? :)

Spud :)

i am also very interested to know if the lifan cdi works. it would be nice not to be limited to just zongshen for electrics. this would definetly extend the servicable life of the zong.


look forward to reading your results. shawn

You welcome! :)
I downloaded Lifans 150cc diagram from -www.monkeybiker.net- forums in this format. So,the lifans diagram (first picture) is originaly from monkeybikers forum.
Then just changed the color and position of wires on CDIs socket in paint :) to have one for Zong. Of course, i used Zongs service manual downloaded from this forum to determinate color of wires going to CDI and looked on Zongs CDI socket to ensure theirs position. So,Zongs diagram (second picture) is original Lifans diagram modifyed in paint to show how Zongs CDI is conected. :?
Now im confused! :D

These days i will order one CDI for Lifan from ebay and try to connect it on Zong.
If it works ill post which wire needs to be put in which position on the socket.

Indeed, it's always nice to find a new source for parts! :) I found the CDI wiring diagram for the Lifan, 150cc CDI unit at www.monkeybiker.net. :) For unknown reasons I can't post the link directly to the thread, but you can find the thread by following this trail:

1. Go to www.monkeybiker.net
2. Navigate to the forums by clicking the appropriate link at the lower left side of the main web page.
3. Go to the Monkeybike forum cluster.
4. Go to the Electric Forum.
5. Read the post "Koppla Lifan 150cc...."

The last post in this thread was made by forum member Vector, posted on July 21, 2010. :)

http://i442.photobucket.com/albums/q...thcoloujpg.jpg

You can also find the Lifan, 150 wiring diagram at the following threads.

http://planetminis.com/f21/lifan-150...ide-82554.html
http://www.tboltusa.com/Tech_Data/in...-daytona-style

http://i442.photobucket.com/albums/q...1502wc1jpg.jpg

I think the Lifan CDI unit will work. :D You can buy the Lifan, 150 CDI units from a number of different vendors, for reasonable prices. :)

http://www.pccmotor.com/new-cdi-box-...-oem15007.html
http://www.tboltusa.com/store/lifan-...efaccf75bc3674

You can also purchase the Lifan, 150cc CDI units on eBay. :)

http://cgi.ebay.com/ebaymotors/NEW-C...item56422d7e1f

Spud :)

Thank you, Azriel. :) I found the wiring diagram at Monkeybiker.net. :D If you modify the Zongshen wiring harness, I think the Lifan, 150cc CDI unit will work. :D Thank you for doing this research, and thank you for posting this wonderful information! :D

Spud :)

I wouldn't be surprised if someone is also selling a "performance CDI" for the Lifan, 150cc pit bikes. ;)

Spud :)

Yes there is performance CDI for Lifan:

http://www.chinesemotoparts.com/inde...c3035ec2e5782e


Im glad you liked it! :)
Will update if it works.
Greetings!

Thank you for posting the discovery of the performance CDI, Azriel. :) I wouldn't be surprised if we discover other performance CDI units for sale, from other vendors. ;)

I might be wrong, but I believe the Pitster Pro, LXR pit bikes might also employ the Lifan, 150cc engine. ;)

http://www.thumpertalk.com/forum/sho...d.php?t=765136
http://www.pitsterpro.com/bikes/list/cat/4

Pitster Pro keeps a nice inventory of pit bike parts in its Lindon, Utah warehouse. :) If the Pitster Pro, LXR bikes employ the Lifan, 150cc CDI unit, Zongshen owners can probably get CDI units from Pitster Pro. ;) Also, Pitster Pro might market "performance CDI" units for their LXR pit bikes. :)

Spud :)

Here's a link to a European vendor selling the Lifan, 150cc CDI unit. :)

http://www.dirt-bike-store.com/LIFAN...iew-1736-.html

Spud :)

I found the Lifan, 150cc wiring harness for sale at the following websites. :)

http://www.pccmotor.com/150cc-engine...150505002.html
http://stores.wholesale-cycle.com/-s...ESS/Detail.bok
http://www.tboltusa.com/store/lifan-...f1c7aaab84eaf8
http://www.24mx.com/pitbike/p/wiring...-harness/s416/

Of course, you can also buy the Zongshen, 200GY-2 wiring harness. ;) I imagine Pitster Pro might also sell the Lifan, 150cc wiring harness.

If someone bought two of these wiring harnesses, he could fabricate an adapter that would allow him to easily switch between either the Lifan, 150cc CDI unit, or the Zongshen, 200GY-2 CDI unit. ;) This adapter would be particularly handy if someone wished to experiment with the Lifan, 150cc, performance CDI unit. ;)

Spud :)

Thanks on these links Spud! :D
I was without internet for a few days,service provider problems... :(
Great idea for that adapter, very possibly ill try to create one.
Will update.
Thanks! :)

Hy.Lifans diagram shows wire positions on CDI watching it from above.
I replaced the wiring diagram for Zong becouse i draw it kind of mirrored... :oops:
Watching from above first Zongs diagram showed wire position in HARNESS (replaced),now it shows wire positions on CDI.
Sorry for posting wrong diagram.
Now its good! :)
Will update...

It has been about 6 months since your last report, Azriel. Have you made any progress experimenting with the Lifan CDI unit? :)

Spud :)

i second that
 

i second that! even though i have two spare zong cdi s it would be interesting to hear of someone who tried the lifan cdi. my zong is running well, so i don t want to turn it into a project over this (other projects like quality tyres and a quarter turn throttle and a headlight/foglight combo are on my eventually-to-do-list).

Hi guys! :D
First of all,SORRY for not hearing of me for so long! :oops:
From 2. to 7. month is really a mess on my job...(photovaltaic modules)
Regarding Lifans CDIs, they were listed on Ebay for 20$ + 20$ shipping fo Croatia...call me cheap,but i thought its too much so i waited a bit ( a BIT? :lol: :lol: :oops: )
SO- yesterday i finally had luck-lifans CDI for 19,99$ ,free shipping worldwide!!! :P
Bought it,paid it & now just need to wait 10-15 days until it arrives.
Then ill try it and report my results...with wiring diagram of course :wink:
If it works,and i hope it will,then ill order lifans wiring harnes for making an adapter ( also new price on ebay- 12$ free shipping :D )
Cant wait ....:twisted:

Thank you for posting the update, Azriel! :) Will you please post links for the good deals your found on the CDI units, and wiring harnesses?

Spud :)

Here it is, both listings from ebay :

http://cgi.ebay.com/ebaymotors/NEW-C...#ht_4207wt_985

&

http://cgi.ebay.com/ebaymotors/WIRE-...#ht_4216wt_985


This looks interesting 2 but can be found for 30$ :

http://cgi.ebay.com/ebaymotors/HYDRA...ht_7566wt_1019

:?

Thanks for posting the links, Azriel! :D

Spud :)

Hi!
Well,its been a while...& i recieved my lifans cdi! :)
After changing wire positions in zongs harnes i succesfully started the beast! :lol: :lol: :lol:

It was little tricky with pickup wires-bike starts only in one combination of these 2 wires. Stator wires can be placed as you wish,it fires in both cases (+ or - if You can understand what i mean- bad english :oops:)

BUT! Theres always a "but" :evil: -IN NEAUTRAL it starts fine,idles fine but when i reach aprox. 3000 rpm it just starts rapidly backfiring and when i release the throtle it dies 8O 8O ?!?!
When puting it in gear & trying to ride it dies even on lower rpms?!
I repeat- in neautral it starts fine,idles fine but wont go above 1/3 throtle,just dies there somewhere.Then i need to leave it sitting for 10 sec before i can start it again. I think im flooding it when punching it too hard...

SO

I suspect that the impulse from cdi to coil is too weak , or that i need a stronger coil? Ill try to measure the impulse voltage from the zongs cdi and the lifans cdi and compare them.

Maybe a stronger coil would do the trick?

A better sparkplug?

Any opinions/sugestions are welcome!

P.S. will upload wiring diagram,didnt make any yet.

Maybe the advance timing for the Lifan CDI unit is different? :?:

Spud :)

Can you give us an update regarding your experiments with the Lifan CDI unit, Azriel? Also, we would love to see your wiring diagram. :)

Spud :)

Hi guys!
To be honest i have not solved this problem...& im starting to think i never will :(
It just idles,you can punch it a bit in neautral with some backfiring, but this isnt rideable condition...

I think its what Master Spud said-different advanced timing...
Anyway,im looking for a spare Zongs CDI,just in case :?
As kilometers go im starting to have a bad CDI hunch...
Any worldwide shipping shops availible? Any links? I would appriciate it very much!

P.S. another project is in progress , pics and full info when its over. :twisted:

Greetings and a safe season to all of You!
Azriel

Thanks for posting the update, Azriel. :) I'm sorry you couldn't make the Lifan, CDI unit work, but thanks for performing the experiment! You made a very good effort. :)

Pliskin is trying to get a Zongshen CDI unit from Taobao, in China. Check out his link in the Dual Sport Forum. :)

Spud :)

Here's a link to Pliskin's thread. :)

http://chinariders.net/modules.php?n...wtopic&t=13810

Spud :)

There's a couple things it might be. The first thing I would look at would be the coil. You need to make sure the impedance(ohms) of the primary windings on both coils are close to the same. It might be easiest just to swap your coil to the lifan unit and try it if you have access to one.

Could also be that the pickup coil voltage on the two bikes is too different. Hard to know without measuring it on both bikes or somehow finding specs.


Are you sure your zong cdi was bad? I had a problem on my sierra where I had weak spark but not enough to run the engine. I assumed it was the cdi at first but when a new one had the same weak spark I changed the pickup coil and it fired right up.


Edit: And don't overlook the obvious too. If your bike has been setting there not running for over a year its very possible something gunked up in your carb and is causing issues. can't hurt to give it a good cleaning. I'm going to post up a zong mv28 cleaning/tuning how-to in the next couple weeks when I get some time.