Reply To: 1956 Evinrude Big Twin #25022 water pump

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January 4, 2020 at 8:56 pm #190948
Geer Pyron
Participant

    US Member

    Okay, we ran the motor in the lake, still on the trailer, backed up far enough to submerge pump housing.
    Same result.
    Actually that was the initial test day before yesterday. Today we took it apart (got it down to 10 minutes) and it a new (different) pump housing. Clean and everything. Not pitted or worn.
    Same result.
    Var strange indeed.
    Not splines.
    Not bad impeller or improperly installed.
    Tested roperly.
    Not key or pin issue.
    Not worn plate.
    Var strange.
    G

    JMGP