Re: tn27 impeller 375688 now sierra 18-3001 ??

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January 22, 2018 at 6:34 pm #70049
frankr
Participant
    quote Mumbles:

    The new impellers thickness and diameter are the same as the original but the TN shafts were slightly smaller in diameter than the later small OMC motors. If the impellers bore is honed out a bit, it will fit right in.

    This applies to the TN-26 but I’m sure the TN-27 shaft size would be the same.

    Slight typo there I think. The TN shafts are larger, not smaller than the 3, 5.5, 7.5. So, bore the impeller out to fit a TN-xx.