Need help - ATC250R...20 over....what compression?

[CodyRx7]

I have a 250R in the shop now, and the tech is just guessing at low compression. What should my reading be with a 20 over Wiseco piston?

[hrc85250r]

ive been told that according to honda specs stock compression is somewhere in the ballparks of 190 psi, but that is just what ive been told... call up a honda dealership and ask them, they should know...

[RideRed250R]

i second that 190-195 depending on piston i have been told that the super-lite raises the comp alittle, mine with just a high performance piston runs 190
adam