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  1. #1

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    Race gas for ski

    Just curious what kind of race gas do some of you guys run in your shos or svhos? I always run 93 pumpgas mods r in my sig, was just curious if I splashed some race gas in the tank if it would run different!


  2. #2

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    Thats what i figured

  3. #3
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Kneedragger85 View Post
    Just curious what kind of race gas do some of you guys run in your shos or svhos? I always run 93 pumpgas mods r in my sig, was just curious if I splashed some race gas in the tank if it would run different!
    You do not need race fuel unless you are running very high compression pistons and/or lots of boost and lots of timing.
    Running race gas in any other situation is just draining your pocket and can and will actually hurt performance as race fuel slows the flame front in the combustion process.


  4. #4

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    Quote Originally Posted by Green Hulk View Post
    Quote Originally Posted by Kneedragger85 View Post
    Just curious what kind of race gas do some of you guys run in your shos or svhos? I always run 93 pumpgas mods r in my sig, was just curious if I splashed some race gas in the tank if it would run different!
    You do not need race fuel unless you are running very high compression pistons and/or lots of boost and lots of timing.
    Running race gas in any other situation is just draining your pocket and can and will actually hurt performance as race fuel slows the flame front in the combustion process.
    yep - totally correct (I'm a reformed hot rod car & motorcycle racer) If the octane is too high for your motor, the fuel will not burn at the rate that matches your engine specs (compression spec mostly) race gas probably burns too quickly for these motors.

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  6. #5
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    That's not true at all. He said race gas not high octane gas. Racing gasoline comes in many octanes and blends. A sub 100 octane unleaded oxygenated racing fuel will net gains anywhere from 10-20hp over standard unleaded gasoline.

    VP T4 or MS109E would be a great fuel for a pump gas flashed SVHO. Easily 1-2mph on the top end if you don't mind burning $15/gallon.

  7. #6
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    I went to the VP site and picked "watercraft > PWC" and that's what popped up

    http://www.vpracingfuels.com/page469686.html

    EDIT: Ms109e is safer for the environment, no MTBE (and you're in the water)

  8. #7

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    Quote Originally Posted by riick370 View Post
    That's not true at all. He said race gas not high octane gas. Racing gasoline comes in many octanes and blends. A sub 100 octane unleaded oxygenated racing fuel will net gains anywhere from 10-20hp over standard unleaded gasoline.

    VP T4 or MS109E would be a great fuel for a pump gas flashed SVHO. Easily 1-2mph on the top end if you don't mind burning $15/gallon.
    I haven't raced in a while and didn't realize there are many sub 100 octane racing fuels on the market that would be good for a motor set up for pump gas. Is that VP T4 something new?

  9. #8
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    Quote Originally Posted by bizeagle View Post
    Is that VP T4 something new?

    I think so.

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  10. #9
    www.eastcoastpwc.net Scott's Avatar
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    Quote Originally Posted by riick370 View Post
    I went to the VP site and picked "watercraft > PWC" and that's what popped up

    http://www.vpracingfuels.com/page469686.html

    EDIT: Ms109e is safer for the environment, no MTBE (and you're in the water)
    109e is also slightly lower octane

  11. #10
    WVGP1200R's Avatar
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    Quote Originally Posted by riick370 View Post
    Quote Originally Posted by bizeagle View Post
    Is that VP T4 something new?

    I think so.

    I run the VP T4 in motocross bikes and the oxygenated blend really wakes them up even in stock compression engines.

    I wouldn't want the cost to run in a Recreational ski though at about $70 for a 5 gallon can.

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