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  1. #1
    jcancel's Avatar
    Join Date
    Apr 2009
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    Sunrise, FL
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    Unhappy HELP with my 03 GTX

    I recently got me a 03 GTX SC. I added to it a
    13/20r riva impeler,
    2.5 wedge,
    new wear ring
    Top-Loader Intake Grate.

    I was thinking the ski should do better than factory. But i guess i was wrong its slower it down to 58mph on gps @ 6800. then someone told me to use a diffrent propeller that so i change it again for a 12/20 and guess what it did worst 55mpg on gps @ 6700rpm.

    I am schedule to get the SC rebuild this week. Will this help on the RPM

    any suggestions on witch impeller to keep i did like the riva 13/20r it feels more aggressive coming out the hole but i can be wrong so please help i don't want to keep putting money to the ski so i go slower the idea of putting $$ is to go faster..

    Water conditions where the same both times i test ride the ski since is on a fresh water canal.

    Please Help..
    r7,600RPM


  2. #2
    FZS-T
    Join Date
    May 2007
    Location
    South..South...Florida
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    757
    Well you also have to remember stock internal axnd SC gear on the 185Hp are different than the 215HP SC Going with an X charger and stock internal (Cast Pistons) not such a good idea!..just my .02 cents i've been that route before that's why i bought an RXT in my opinion i believe the prop you have it too tall for the minimal mods you have you should have gone with a 14/17r you must bring the rpms back up

  3. #3

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    Post this in the Sea-Doo 4 Tec Performance section.

  4. #4
    jcancel's Avatar
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    Apr 2009
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    Sunrise, FL
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    i did but i was having no replies for it sorry

  5. #5
    papafever's Avatar
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    Aug 2009
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    gprxp tuning stage

    Quote Originally Posted by jcancel View Post
    i did but i was having no replies for it sorry
    your problem is definatly the prop to big.need to go down on the prop to bring your rpms back up rpms is what gives you speed.

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