Is there an official list somewhere of which engines are clones of which engines?

I have a GIO Beast with the 200CC Zongshen motor, I thought it was a Chinese designed motor untill the other day, I found out which motor it is actually a clone of.

This motor is a pushrod, vertical cylinder 2 Valve 200CC engine, manual clutch 5-speeds (5 forward in bikes, 4 forward, 1 reverse in ATV's), chain drive, air cooled. I have seen it up to 250CC in size, I think I have seen it as a 150CC in another brand quad, but GIO only does the 200CC and 250CC.

The engine is actually a Honda design, here is a good writeup on how it came to be and how it is designed. I think it is neat that it only has 1 cam lobe that both valves share.

http://world.honda.com/history/challenge/1975cg125/index.html

This motor, and bike are not common, if at all sold in America or Canada, that is probably why nobody identified this motor as a Honda CG125 clone. If you search for CG200, I get many Google hits as this is the common name for the engine from the Chinese manufacturers. I guess it is also closely related to the Honda OHC engines of simmilar size, must share the same gearbox and bottom end. I would assume maintanence specs fot the Honda CG125 would apply for the Chinese variants of this motor like valve clearances.

Some Maintanence Specs:
Servicing

Picture:
http://www.gokazuma.com/images/cg200_engine_info.jpg

This is a Kazuma CG250 250CC engine, same thing as the 200CC that is in my GIO.

I wonder if we should get a list together of the different styles of Chinese engines, which engine sizes are in that size, gearbox styles, and which engine they are clones of, it would make ordering parts alot easier.

 

Thats real nice info...i looked around for a long time attempting to find the engine they copied...

The 50 thru 125's are Honda trail 70 copies from what Ive heard...

And of course the GY6 Honda(scooter engine) copy that is most of the 150's.

 

Good info I always wondered who made those 200-250's originally!

 

Does anybody have links to maintanence sites for the GY6 engine or the Honda 70 engine (anybody know the technical name for the Honda 70?)

Looks like the Honda CG motors are very reliable, and fuel efficient. The early ones suffer from cam bearing issues if you dont change your oil regularily, this could possible be a problem with the Chinese engines, but Honda seemed to correct it in the 70's, probably with different oiling, so maybe the Chinese engines have been too.

 

I see you have a good variety of Chinese and smaller displacement Japanese ATV's and bikes. What do you think of the power comparison between simmilar engine sized Chinese and Japanese bikes? And between the different Chinese engine styles.

 

For the little 50 to 110cc you can use the cylmer manual for the honda's that size
Clymer Honda 50-110cc, OHC Singles 1965-1999 As for the Gy6 engine those are very popular in the buggies and scooters also. Just Google GY6 and you will find all kinds of info and online service manuals and "how to" videos.

 

I seen a 250 Chinese atv the other day,and The motor looked exactly like the 250 in my 1986 Yamaha Moto4, probably used the same die cast,but I,m sure the metallurgy is not to the same standard.

 

Yes Jianshe makes a 400 and 250cc yamaha copy in China.

 

will the yamaha 400 parts fit the clone?

 

Just compared the big bear 400 to my jianshe, the parts are interchangeable.... the big bear clutch discs are a bit smaller but work, also the piston is 10mm larger but the top end will bolt right up.