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Thread: 2004 RXP

  1. #1
    Biggsw784's Avatar
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    2004 RXP

    I have a issue I have been fighting with far a while now. When my RXP was stock with a new 14/19 prop, I could go from idle to wot with no cavitation at all. Worked perfect. Now since I did the x charger with a et 134 wheel, riva intake and free flow exhaust, external ic and i installed a new 15/20 prop and wear ring, when I go from idle to wot now it just sits there because it cavitates so bad. I have to feather into the throttle for it go. It seems fine to pin it to wot from half throttle without issues. It has a new carbon seal and bellow also. What is going on here?? Does my new prop need fine tuning??


  2. #2
    SplishSplash's Avatar
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    Pump seal?

  3. #3
    Biggsw784's Avatar
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    Yes. I put a brand new pump seal in also.

  4. #4
    Got Boost? psycho rxp's Avatar
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    What r your max rpms @WOT? May need to be pitched, or get a reflash to bump up the limiter some.

  5. #5
    If i knew,...I wouldn't ask sea-one's Avatar
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    Try putting a couple zip ties around the carbon ring bellow to apply more pressure to the seal .. zip ties go in the rib part of the bellow

  6. #6
    Biggsw784's Avatar
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    I have also thought that it is hitting the rev limiter but it's not hardly moving

  7. #7
    AtoMIC_OraNGE greenbullet's Avatar
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    Are you on the limiter? If your running stock Ecu and 15/20 you are

  8. #8
    I'm with green bullet . My 137+4 in is sitting at 8350 with a 15/22 and 87mm nozzle . Granted the air and water temps are In the 30s it sounds to me you need to step up the prop

  9. #9
    AtoMIC_OraNGE greenbullet's Avatar
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    Bend that blade to a 15/23

  10. #10
    Biggsw784's Avatar
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    How is someone that can tune my prop?? I have tried for several months to get
    ahold of speed Freeks with no answer or call back.

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