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.
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:
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.