Well i took the cylinder off last night and measured the bore. To my surprise it measures out at 63.4mm.

 

That'll make it easy to get parts since that is by far the most common size.

 

I wasn't aware that Honda made a CG200. The Honda CG125 pushrod
engine had a long and very successful run from 1975. Recently Honda switched the CG125 and CG150 to OHC. The Chinese CG clone engines are all pushrod type. Google Honda CG125 History and you'll fine Honda's time line and reason for the CG engine design.

 

Since the bore actually measured out to the 63.5mm spec, would the stroke be that listed for said bore? Or would it still be the stroke of the 69mm bore?
Sorry for all the questions. I'm just used to shopping for parts for my Yamaha. (select year make/model and search!)

 

No way to know for sure without measuring it. Most likely the standard 62.2mm stroke for the 200cc CG engine.

 

My apologies if I got the Honda CG200 bit wrong. I copied the info off the clutch plate website, a dangerous thing to do. Looks like the Chinese are not adhering to the standard of second and third numbers in the engine number being the bore size, which makes life interesting. It is always best to open them up anyway, and check, in case the engine has been bored out.

 

Lifan and Zongshen engine numbers can be trusted but Taotao can't. Don't know about other manufacturers.