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  1. #8
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    Re: Is 90 hp enough?

    Try to find out what MAX HP is for that boat. You'll want at least 75% IMHO.

  2. #7
    Senior Member Hookem2004's Avatar
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    Sep 2009
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    Milpitas, CA
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    Re: Is 90 hp enough?

    I would personally want a little more power. I had. a tracker bass boat with a Mercury 90 and I thought it was under powered.
    2018 Duckworth 235 Pacific Navigator
    Yamaha 250HP
    Yamaha 9.9 HP
    Scotty's downriggers
    Lowrance Ti2's

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  4. #6
    Senior Member burninfuel's Avatar
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    Dec 2004
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    Carson Valley Nevada
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    Re: Is 90 hp enough?

    2005 Crestliner Serenity 1800, 18'2" 95" wide and 41' deep
    40 gallon fuel 280#
    4 battery's 200#
    basic boat 1465#
    Honda 90 and 8hp kicker hi torq 478#
    2 cannon electric DR and balls 55#
    Tackle and rods ice chest 60#
    and my fat ass 2738
    put 15p prop on and jumps out of water fast and get 31 mph on gps and 6k rpm
    at 5000' elevation
    Yes it will do great


    Last edited by burninfuel; 08-11-2019 at 07:47 PM. Reason: edit

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  6. #5
    Senior Member
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    Re: Is 90 hp enough?

    I had a 18 ft North River Seahawk, off shore bracket.
    Had a 8 hp kicker,,,,,,, 90 hp Suzuki main motor, plenty of power.

    Is it a Seahawk or Mariner ??

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  8. #4
    Senior Member Waterdog's Avatar
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    Aug 2009
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    Re: Is 90 hp enough?

    I don’t know what the boat weighs but 90hp should be just fine. I had an 18’ Alumaweld with a 90hp merc and it pushed the boat just fine. I could do 40 or 41 mph per gps with me and one other person in the boat. With 6 adults and 2 large dogs , 2 ice chests and other stuff in the boat it took a little doing to get up on plane but I was way over the rated weight capacity. With a total of 4 adults plus fishing equipment the boat performed great.
    Its always good to have more horsepower than less but if you really like the boat , and the price is right I’d buy it in a second with a 90 hp.
    Be sure to take it for a good test ride and then decide.
    Hunting, Fishing and Labrador Retrievers and at the end of the day a glass of Buffalo Trace Whiskey- Life is Sweet.

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  10. #3
    senior member RideNfish's Avatar
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    Riverbank, CA
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    Re: Is 90 hp enough?

    Should of mentioned it is a used boat. Thanks for your input.

  11. #2
    Senior Member
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    Re: Is 90 hp enough?

    The 115 Yamaha would be enough. The 150 is the sweetheart of the Yami inlines. If you can swing it, that's what I would put on it.

  12. #1
    senior member RideNfish's Avatar
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    Is 90 hp enough?

    Is 90 hp enough on a 18' North River walk thru windshield. A friend told me 115 as a min. Was told 90 is fine on lighter hull 18' boats like Tracker, Lund, etc. but not so much on the heavier. Also has a 8 hp kicker adding to the weight.
    I don't need high speed but want no problem jumping on plane with 3 people.
    Thanks for input.

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