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  1. #1

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    V-tec only turning 8150 rpm

    What am i missing .just put ski in water and it will only turn 8150 to 8200 rpms
    i had it set for 8750 it will turn 9000 on thr trailer
    i have riva valve train,50s,xcharger,external ic nad a new 15/22 prop
    it was cold today so i thought it might turn 8600


  2. #2
    A smart admits!A wicked excuses!An idiot insists! mitsakosgt's Avatar
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    I think the 15/22 is too big for that mods! You should try a 15/20 first!

  3. #3
    Banned User
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    dont rev it to 9k on the trailer.... just sayin'

  4. #4
    Mod less, ride more! troyheb's Avatar
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    Quote Originally Posted by mitsakosgt View Post
    I think the 15/22 is too big for that mods! You should try a 15/20 first!
    +1

  5. #5
    warner0308's Avatar
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    no load on the trailer, try 15/20

  6. #6
    dnielsen's Avatar
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    Quote Originally Posted by lightspeed View Post
    What am i missing .just put ski in water and it will only turn 8150 to 8200 rpms
    i had it set for 8750 it will turn 9000 on thr trailer
    i have riva valve train,50s,xcharger,external ic nad a new 15/22 prop
    it was cold today so i thought it might turn 8600
    What was it turning before the V-tec tune? On the trailer has nothing to do with the RPMs under a load in the water. If you were running 8150-8200 before the V-tec tune you will still turn the same. Check the charger for correct slip, you can re-pitch to gain some RPMs. Just remember that you can raise the limiter 20,000 RPMs buf it doesnt mean you'll have the power under load to spin it there! Just saying.........

  7. #7
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by dnielsen View Post
    If you were running 8150-8200 before the V-tec tune you will still turn the same. Check the charger for correct slip, you can re-pitch to gain some RPMs. Just remember that you can raise the limiter 20,000 RPMs buf it doesnt mean you'll have the power under load to spin it there! Just saying.........
    +1
    Raising the rev limiter doesn't mean your engine will automatically turn that many RPM's. You will need to create more power or depitch the impeller to get the RPM's up. The 15/22 is also the wrong impeller for high RPM. Start with the 15/20R

  8. #8

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    i have a 15/20 prop . i will put it on and see what happens. i was turning 8100 rpm with all stock and 70 mph 76 mph with mods

  9. #9
    Fast & Loud meeper's Avatar
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    x charger will deff not turn that prop that high, I'm surprised its that high.... depending on X ski or not, which is it?

  10. #10

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    its an 04 rxp

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