Re: uberscoot 2x50cc
there is no book on how to turn a backpack engine into a hot rod engine, there are basics. you don't have to remove the cyld to remove the base gasket. Put the piston on TDC, remove the 4 cyld mount bolts. staying on TDC pull the cyld up till the bottom of the piston is a BDC keeping the rings in the cyld. Scrape off the paper base gasket, I push a paper towel in the case hole so nothing can fall in. clean both mating surfaces. Get your Yamabond put a tiny bead on the case side, and I spread it real thin with my fore finger. drop the clyd down lighty, put the cyld bolts, only finger tight, wait tell the next day and tighten them, that's it. You will feel the difference when you pull the rope. the cases have to be air tight so gaskets and crank seals are important, no leaks. don't think there is more than 20 or 30 pound of pressure down there.
Last edited by EPR; 09-18-2019 at 07:32 PM.