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  1. #1
    Mongoose's Avatar
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    Gp1200-What's my problem??

    Sorted out the stumble in carburation-lows had to come out just shy of a quarter turn.
    I have Riva fa's, pro tec 150 psi head, water bypass, R&D intake, pro-Tec ride plate and Solas 13/19.
    Comes off clean out of the hole, and goes onto about 6850 rpm (Tiny Tach).
    All would seem good in the world-BUT- a friends Gp1200 with just a Riva intake grate, and a Skat swirl 13/19, keeps up with me everywhere! I might be a few mph quicker than him on glass, but we never see glass on the ocean. I would have expected half a dozen boat lenghts or so on him out of the hole, but nothing-They are side by side!
    All under the hull looks fine, and in the right plasce- no trim tabs on either ski-his is alate 98, mine 99.
    Anybody have any ideas???


  2. #2
    Duke's Avatar
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    From what I can remember that Pro-Tec plate handled decent but was slow. I think 97GPSLEEPER uses a modded R&D.

    Have either one of you rejetted your carbs?

  3. #3
    Mongoose's Avatar
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    Quote Originally Posted by Duke View Post
    From what I can remember that Pro-Tec plate handled decent but was slow. I think 97GPSLEEPER uses a modded R&D.

    Have either one of you rejetted your carbs?
    Slow out of the hole with both stocker and Pro-tec plate.
    No re jetting on either.

  4. #4
    ....back from the dead.... J-ME's Avatar
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    The swirl is a superior impeller in the rough stuff. You also need a longer ride plate for rough water.

  5. #5
    Flying Scotsman's Avatar
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    I think J-MI got it Swirl and you might want to try the shredmaster plate.Does he have a 0 deg or 5 deg nozzle
    Last edited by Flying Scotsman; 07-06-2007 at 03:31 PM.

  6. #6
    old school big raider's Avatar
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    the swirl is the difference-if you had glass water you would walk by him-mark

  7. #7
    Mongoose's Avatar
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    Thanks. I was suspecting the prop myself, because everything else looks good.
    Didn't think about the nozzle-I will check.

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