RE: another darn ryobi post (ryobi performance modification, analysis and comparison)
I did have the piston turned the right way. Still hits the crank. There is no way I can see to put the good backplate on the smaller crankcase. It is just too small. Keep in mind that the crankshaft on the smaller crankcase has a shorter off set therefore the connecting rod has to be longer. Just wondering how this will affect the stroke and compression when swapping the head to a standard crank and connecting rod.
Jim