Piston Compatability

clhiller · Post by **clhiller** » Thu Jun 21, 2012 12:22 pm

I am redoing a CA78 and need new pistons. I have a set of S2 pistons from a CB77. Can I use these and what will it do to compression?

OldStan · Post by **OldStan** » Thu Jun 21, 2012 1:57 pm

They will work, thats what I pulled out of my CA78, but they do lower the compression.

clhiller · Post by **clhiller** » Fri Jun 22, 2012 10:01 am

How significant is the drop in compression? Is it a noticable drop in power?

OldStan · Post by **OldStan** » Fri Jun 22, 2012 10:20 am

I really don't have a good basis for comparison. I didn't ride it before pulling it apart. I wouldn't be surprise if someone the forum has that information. Unless your worried about cost I'd go with the right ones. Starting with lower compression can't be a good thing. Aftermarket from Ohio Cycle aren't that expensive, if he still has some.

LOUD MOUSE · Post by **LOUD MOUSE** » Fri Jun 22, 2012 12:50 pm

I have 0.25 and 0.75 AM pistons and HONDA rings. ..............lm

OldStan wrote:I really don't have a good basis for comparison. I didn't ride it before pulling it apart. I wouldn't be surprise if someone the forum has that information. Unless your worried about cost I'd go with the right ones. Starting with lower compression can't be a good thing. Aftermarket from Ohio Cycle aren't that expensive, if he still has some.