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  1. #1
    big83bronco's Avatar
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    Angry Tuners HELP ME!! I Dont Understand?

    Ok guys try to stay with em on this one because it can get confusing!

    BTW..im running open carbs right now until my F/A's come in!

    Previously I was runniing a box stock Solas 13/19 at 66.3 mph @ 7090 RPM's.

    Then I swapped to a "Island Racing 14/20" that I bought used but "like new" condition and was running 61.2 @ 7040 rpms **Yes thats right, same rpm's but slowed down!

    Then I added an R&D CDI and ran 62.3 @ 7180 rpms...Yes the CDI helped that much on RPM's!!!

    Today I swapped to a Island Racing "14/20 depitched to 11/18" and ran 63.7 @ 6810 rpms.........then we put on a 87mm nozzle that has all the "holes" plugged including teh visibility spout. We then indexed the plugs and i came out about 1/8th a turn on the #1 high screw due to it running a slight bit lean. To my amazement I then ran 65.3 mph @ 7010 rpms peak but was usually arounds 6970 average..

    ********Here is the weird thing, if those numbers arent screwed up enough!*******

    We were working on the ski on a dockside ramp that was angles at about 15 degrees uphill. Everytime I put teh boat back in the water for about teh first 30 seconds it would run liek crap and bog out really bad then all the sudden it woudl run great. THen we would put it on teh ramp to make anoter adjustment and get the same mystery bog?!?!?! What the hell gives?

    After that i took the seat off once more and noticed an oily fuelish film on top of the little bit of the water in the hull, almost like one of my carbs is leaking down fuel? What could be going on and woudl this cause my top speed problems?

    I should be running over 70 mph....I just dont get it. >

    *****And before someone asks...my pump shoe is PERFECT!!!!
    Last edited by big83bronco; 08-14-2006 at 12:40 PM.


  2. #2
    MR. SCOVILLE UNIT SUCKMYWAKE's Avatar
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    i think u are seeing some of the oil injection being dripped inside the hull cause u have no f/a's on

  3. #3
    big83bronco's Avatar
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    Im premix....but that is a possibility....but that is a small problem, why the hell cant I break 70????????

  4. #4
    2000 GPRXP 4tec shooter98xpl's Avatar
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    check your pump shoe,
    what exactly are your mods?
    SHOOTER

  5. #5
    big83bronco's Avatar
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    Angry

    All my mods are in my signature. My pump shoe is perfect adn the pump is sealed very, very well! I just dont get it. WHy cant I break 70, ive got all the right stuff.................

  6. #6
    Mr Bill's Avatar
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    an 800 grate might help little bit.....

  7. #7
    big83bronco's Avatar
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    Bill.........did that pretty much cover the situation? Toss in some other info if you remember anything.

  8. #8
    philip_gpr's Avatar
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    well I can help narrow things down - the problem is with the motor - you don't have RPMs for the relatively low pitch impeller.

  9. #9
    big83bronco's Avatar
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    yeah, we just csnt figure out why I dont have the rpm's.....I must be missing something on teh motor that me and about 5 other people havnt thought about. ME AND MR. BILL WRENCHED ON THE DAMN THING ALL YESTERDAY IN THE WATER.........IVE GOT THE SUNBURN TO PROVE IT!!!

  10. #10
    what is your compression?

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