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  1. #1

    85 HP Evinrude Question

    Hi Guys,

    Just after some advice from the all knowing combined intellect of the group.

    I recently purchased a Chivas Thunderbird MkV that is fitted with an Evinrude 85 hp motor that was manufactured in 1975 .

    The motor is is excellent condition for it's age and has plenty of grunt but running at about 15 knots it uses 25L/hr which seems a bit much.

    Is the fuel usage normal and if so should I stick to this motor or get another one? If replacement is warranted what would be a suitable size motor and price ?

    Thanks in advance.


  2. #2

    Re: 85 HP Evinrude Question

    might help us mugs if you say how heavy that boat is, what diameter and pitch prop, and whether 15 kts = wide open throttle, half on the plane, etc etc.

    Gurus will know the answer on the info you have provided, no doubt.

  3. #3

    Re: 85 HP Evinrude Question

    Thanx Fishtime for replying.

    I thought that the old Chivers Thunderbird was a boat common enough to be known to most ,sorry

    In answer the TBird is 18 foot 6 fibreglass and is HEAVY.She is capable of 35 knots at full throttle so at around half throttle it uses 25L/hr.

    Have no idea of prop pitch but the motor etc are standard issue for the old girl.

    Thanx again

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