Reply To: Compression after new piston rings

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January 27, 2021 at 8:50 am #228876
Buccaneer
Participant

    US Member

    Mike, from what you describe, it sounds like your pistons are installed correctly.
    When you spin the flywheel over by hand, does feel like there’s only 20 psi
    compression? If so, there would be very little or no rebound or “bounce”
    on the flywheel. Does your compression gauge test out okay on a known
    good engine?

    Prepare to be boarded!