Is it possible to Increase the stroke on these motors? Is there enough "meat" on the flywheel to offset The crankpin, use an offset crankpin ,or can it even be done on a 2 smoker without effecting the timing?
That's for ignition timing... They're talking about port timing which is something totally different.This supposedly helps you change timing:
http://motorbicycling.com/f13/hybrid-chinese-motors-performance-tuning-14204.htmlThere was a member once, a long time ago, who stroked the flywheels by Tig welding the crank pin hole up and machining the hole closer to the edge of the flywheels. He also ran a moped piston, cylinder and head. It was quite a Frankenstein sort of engine, and extremely fast.
He is no longer a member here though, and I cannot find any threads concerning it.
Like I said, it was a looooong time ago.