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  1. #1

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    04 Seadoo gtx sc way down in rpms

    I changed the supercharger (Metal Washers), upgraded the pump for the metal one, new wear ring, installed a power filter and still down in RPMS to 6800 rpm when it should be 7600rmps.
    What else should I check? Don't know where to look...
    Thanks
    Hec


  2. #2
    jpeconsult's Avatar
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    It is the SC. Send it to Jerry. He will get you taken care quickly too. It seems the SC is still slipping. You may have had more than the washers messed up. Jerry can measure each piece and tell you which ones need to be replaced.

  3. #3
    King_Of_Fun's Avatar
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    If I remember correctly, the 04-05 and 06-07 SCs use different metal washers. Did you get the correct set?... Ron

  4. #4

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    Yes, just got it done at PPG which is close to my house. Slip is within specs.

  5. #5

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    JPE consult,
    I have a spare 2005 rxp ecu. Will that bring rpms up?

  6. #6
    King_Of_Fun's Avatar
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    Did you put in a new impeller when you upgraded the pump?... Ron

  7. #7
    jpeconsult's Avatar
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    lol...yeah it will bring them up to about 8100. It will spin the impeller faster than it can keep up with, which is why you would need to upgrade to a RXT driveshaft, larger diameter impeller (requires larger diameter wear ring), knock sensor harness and 58lb fuel pressure regulator.

    Your SC may be within specs, but the stumper is your 6800 RPMs. That is the magic number for a 185 hp when the SC is gone wrong.

    If the SC is rebuilt AND within specs, maybe check your hoses and clamps. If the SC is creating any boost, you can loose it through a loose hose/clamp. Just make sure everything is tight. Don't just look...put your hand on every hose and "wiggle it...just a little bit".

    Reply with update

    Keep that spare ECU as a future mod, if you are planning on modding that thing for a while.

  8. #8
    jpeconsult's Avatar
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    BTW...I thought it was the 2003's that had the plastic pump housing. I thought the 2004 to current had metal.?!

  9. #9
    Quote Originally Posted by jpeconsult View Post
    BTW...I thought it was the 2003's that had the plastic pump housing. I thought the 2004 to current had metal.?!
    depending on date of manufacture. early = plastic, later = alum...

  10. #10

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    Ok,
    I found some issues:

    Throttle body was not opening all the way, I had to adjust it.
    Oil level was 1/2 inch above the full line.
    I will test that first..
    Thanks

    Pump new, I upgrade it to the metal with 12/20 solas impeller

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