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  1. #1

    Join Date
    Aug 2007
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    GP1200R Stage 2 Only getting 63.7 on GPS

    Not sure where to start to look for the issue..


  2. #2
    Moderator beerdart's Avatar
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    Aug 2006
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    What RPM?? Is you MPH with GPS??

  3. #3

    Join Date
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    Quote Originally Posted by beerdart View Post
    What RPM?? Is you MPH with GPS??
    It is MPH.. I am running about 7100 RPMs.. Not 100% sure though because I don't have a Tach yet.. Thats going by the display tach..

  4. #4
    Moderator RX951's Avatar
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    If you can, list all your mods
    Do a compression check
    An aftermarket tach would be helpful
    How is your impeller/wear ring clearance?
    Is the pump shoe set properly?
    What impeller do you have?
    What ride plate do you have?

  5. #5

    Join Date
    Aug 2007
    Location
    New Hampshire
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    Quote Originally Posted by RX951 View Post
    If you can, list all your mods
    Do a compression check
    An aftermarket tach would be helpful
    How is your impeller/wear ring clearance?
    Is the pump shoe set properly?
    What impeller do you have?
    What ride plate do you have?
    It is Bored out to 84mm
    The compresion is right around 175lb
    Clearance looks good..
    It has an R&D plate but I am not sure which as it was with the ski when I bought it.
    Impeller is Solas Set back 13/20
    Top Loader intake grate
    Carbs were hand modded to something weird.. LOL I have re jetted them to 125 main 110 pilot 95 gram spring 1.5 needle/seat Highs are at 1 7/8 lows are at 1 turns out.
    Riva sponsons
    ADA custom fab head
    Pump seal
    vforce 2 reeds
    Stinger pipe

    I think thats everything

  6. #6
    Your mods are impressive and you should be getting much faster speeds but first we need 2 things;
    1. Speed verified with a GPS, not the stock dreamo
    2. Actual RPM readings with an after market tach, stock display is useless

    With those 2 things we can determine if your problem is engine related or hull/set-up related.

  7. #7
    CHICKA WAH WAH bren's Avatar
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    Sep 2007
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    Cairns, Australia
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    595
    is the servo motor on the PV's working?

  8. #8
    Never say never KirkF350's Avatar
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    Jun 2005
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    Midlothian, Texas
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    Check your pump shoe to make sure it is not handing down any.

  9. #9

    Join Date
    Aug 2007
    Location
    New Hampshire
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    Quote Originally Posted by VOODOO View Post
    Your mods are impressive and you should be getting much faster speeds but first we need 2 things;
    1. Speed verified with a GPS, not the stock dreamo
    2. Actual RPM readings with an after market tach, stock display is useless

    With those 2 things we can determine if your problem is engine related or hull/set-up related.
    LOL.. I like that term.. "Dreamo" It was with a gps
    I unfortunately don't have the Tiny Tach yet.. I have an Advent ignition which was set at the factory so I am not sure what they did for curves.

  10. #10

    Join Date
    Aug 2007
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    Quote Originally Posted by bren View Post
    is the servo motor on the PV's working?
    The Servos are working.. I just went through a severe electrical issue and had to check everything.. Turned out the CDI wasn't turning off and was draining the battery

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