Bore Size
 

:help:I am having some difficulty finding out the stock bore size of a 2002 EH35C engine. About 5 years ago, I replaced the pistons and rings, and now the engine has low compression (90# per cylinder) and it smokes. I don't want to buy blind and get 0.25mm oversize pistons if the block is worn past that point. I disassembled the engine last night, and there is no ridge to speak of on top of the cylinder. However, there is a lot more "slop" than I think is necessary when I insert the piston inside the existing hole.

What is the bore size of the 350 cc Robins engine? Are 0.50mm oversize pistons available?

Thanks in advance for your help.

Re: Bore Size
 

2.6378-2.6385" is standard bore for the 350, piston oversizes are.25 and .50mm.