Q: I have a little 5 hp - 6hp tecumseh OHV engine. I would like to hook it up to a manual transmission and I would like to make it have a bit more horsepower. Would I stroke it or what
A: 1st, throw that thing in the trash if you want to have a manual trany. Just go find a cheap dirt bike with a 80cc or 125cc, the trany is already in it. just set it on the chassis, line up the chain, tack weld the mounts, remove engine, finish welding mounts then bolt engine on, and attach chain, throttle, clutch cable, etc........