RB engine
#1
RB engine
I got a motor of ebay, the seller claims it was a s7 with a sandblasted head. Case says C5. I can't clearly read serial number on case. How can I tell if it is a S7 or C5? Do they use the same piston and sleeve? The engine has great pinch, but the piston shattered. Anyone have a old piston I can have?