Re: Top speed with 18hp Evinrude on 14′ aluminum

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January 12, 2017 at 8:30 pm #50900
fisherman6
Participant

    US Member

    You can still have good compression and have damaged pistons and rings. I’d be willing to bet a leak down test would not yield the best results. I agree that a rebuild is in order. I get a shade over 20mph with my ’59 Evinrude 18hp on my Sea Nymph 14R with just me in the boat and still between 19.5 and 20 with the wife riding along. That’s with the stock prop. With good pistons, bores, and rings you should gain performance.
    -Ben

    OldJohnnyRude on YouTube