Reply To: ’57 Evinrude 7.5 fleetwin fuel mix

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February 9, 2020 at 3:15 pm #194370
Don
Participant

    US Member
    oldemtr wrote:

    No fight or argument here – I do understand and have read the many, many posts here on fuel mixes, in general, and I’m not looking for a recommendation on that.
    I only wanted to know if anyone knew WHY the factory specified that particular motor for 16:1, when the others in that same list called for 24:1.
    What was different about the 7.5.?

    The reason why the 7.5hp is singled out is because of the plain bronze bushings on the connecting rods….The 5.5 and 3hp models are set up the same way….