So i ended up getting one of those fake ADA heads awhile back and ran it all last summer. I believe i had close to 180 psi in each cylinder.. As soon as i found out that it was fake i replaced the head and domes with genuine ADA products (35cc on a 701), i went and bought a new compression gauge at oreilleys and hit each cylinder with it. It came out to a dead even 160 on each.. wth is it so low? I didn't receive a new o-ring with the new head so i ran the old one, which looked a little squished but nothing too major, i felt content in running it.. Do i have a blown gasket or something?
Last edited: