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Need info on this engine

Need some information about a Shinidawa a friend of mine has. The only markings on it is 1R20 No pictures, anybody have any ideas ? Displacement ? Anybody done one of these ?

RE: Need info on this engine

I had one once,about 21-22cc.Light,2 rings,basiclly a copy of the echo.The only thing i didnt like was the flywheel was turned backwards so the fins where facing the block and the space that the hub would screw onto was only about 3/8ths to 1/2 inch around.[if i remember right].I didnt have a milling machine or even a drill press so i couldnt shave the lip out of the flywheel.I didnt have a lathe yet and was just starting into conversions so i sold it to a guy in CA.I think it would be dead on in comparison to an echo.Maybe a little lighter.

RE: Need info on this engine

Thanks Buck ,,,,,,,,,,,,,,

RE: Need info on this engine

I have 3 or 4 shindaiwas coming to me around the 14th.Ill check what the numbers are on them.And check weight.