Compression Check?

Discussion in 'Bubba's Outboards' started by Aquacat, Oct 13, 2005.

  1. Aquacat

    Aquacat New Member

    Sherman, Texas
    What should the compression be for a 1961 Evinrude 40 hp Big Twin? I know if it's within 15psi in each cylinder your okay. I was just wondering if their was a curtain number of psi each cylinder needs?