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  1. #1

    guys and pro's need help

    ive got a rxp bkit 42 inj 13/18 prop 4 in air grate sponsons basically everythin . ive had this problem now for while my ski only turns 7900/8000 rpms max my computer is maped to 8650 , took it shop they said it was my pump bought a new pump

    thing runs crazy take off , i was on the water yesterday had 2 p-x and t-x and each and every race i was about 2 -3 skis ahead until top end and they were always just passiing me and this is on glass no waves no ripples smooth like glass water

    what the F&^% IS UP WITH THIS SKI

    CANT FIND ANYTHING WRONG WITH IT

    PLEASE HELP
    MAYBE JERRY KNOWS


  2. #2
    Banned User
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    You are running out of fuel, especially since you are mapped for 8650, that normally requires 50# injectors...Swap them out and get an A/F reading before any other runs...

  3. #3
    na tried that swapped over some 50# and still same .
    this is one mystery i cant figure and had the problem for a while know
    when i am flat out at and staying at 8000 it just wants to keep going but feels like some thing is holding it back

  4. #4
    Doel Tiburon1264's Avatar
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    Josh,

    List all your mods, Sc boost number, RRFPR base pressure setup and operating pressure and AFR numbers.

    Why you running a 13/18 prop?

    Completed a Boost Leak Down Test.........
    Completed a Sc slip movement.........
    Visual Inspection on Grate and Rideplate....
    Stay with the 50lbs inj. 42's are to small for your application.

    List you mods. and some1 will help you and remove that bug out your ski. There some good people in the forum that will help you.

  5. #5
    Moderator Snoman's Avatar
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    Looks like your prop is to small...

  6. #6
    Water4fire's Avatar
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    Quote Originally Posted by Snoman View Post
    Looks like your prop is to small...
    Sno you mean,To big?

    What size prop are you running?

    /

  7. #7
    Doel Tiburon1264's Avatar
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    Quote Originally Posted by Water4fire View Post
    Sno you mean,To big?

    What size prop are you running?

    /
    Water4fire,
    Question?

    If that 13/18 prop is a three blade right. I'm running a Solas 15/22 at 8700rpms in my ski.

  8. #8
    mods list
    bkit
    seadoo center valves , springs, retainers,sponsons, opas block offs, 4 inch air , worx grate , skat 13/18 prop

    was back in the shop 2 weeks ago and my boost is reading at 14.9
    clutch was checked no slipping
    injectors were all fine
    i dont have the operating pressure and AFR numbers.

    but all work was looked over by les himself from seadoo center and even he is puzzeld at why i am running so low

    and the reason why i have 13/18 i do cc racing so bottom end really counts

  9. #9
    Doel Tiburon1264's Avatar
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    Quote Originally Posted by josh_m View Post
    mods list
    bkit
    seadoo center valves , springs, retainers,sponsons, opas block offs, 4 inch air , worx grate , skat 13/18 prop

    was back in the shop 2 weeks ago and my boost is reading at 14.9
    clutch was checked no slipping
    injectors were all fine
    i dont have the operating pressure and AFR numbers.

    but all work was looked over by les himself from seadoo center and even he is puzzeld at why i am running so low

    and the reason why i have 13/18 i do cc racing so bottom end really counts
    I think you just anwser, the reason on your top end speed. I think Less got you setup for CC racing. You have great acelleration and fast in short runs/distances. Thats my point of view.

  10. #10
    Having Fun jp1300r's Avatar
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    If Les Cooke can't figured it out, I doubt anyone here can either.

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