Honda TRX250R Forums banner

break in

  1. Compression before Break in.

    Engine and Transmission
    So I just put in a new 68mm wiseco with a fresh bore. I put the cylinder and head on and was only getting about 90lbs compression and could hear air leaking past the piston rings. Is this normal before breaking an engine in and what kind of compression should I get the rings seated? Thanks.
Top