the Zongshen 250-5 (the vtwin) is the yamah virago...
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the Zongshen 250-5 (the vtwin) is the yamah virago...
The engine in my Jialing JH 150GY-2 appears to be very closely related to the CFR150. Same bore and stroke, etc., but a different tranny, of course.
It would be fun to build a fire-breathing[relatively speaking]195cc or 230cc motor out of aftermarket CFR150 stuff, but at the end of the day,
it would be cheaper to just drop in a 200cc replacement engine. The pushrod 200 would match the stock carb and pipe well[maybe up on the main jet
one or two sizes]and make for a nice torquey set-up. It's the close ratio 5-speed tranny that limits these sm. China-motors and good low-speed torque
would make for the best street bike. It would allow for a smooth start while pulling some high gear ratiios[to keep the revs down at cruise].