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  1. #1
    PWCToday.com Is My Home Away From Home cavemanX2650's Avatar
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    swirl dome head for a 650 kawasaki ,..how much compression ?

    surely somebody has to know ,....










  2. #2
    Top Dog Bar Tab's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    It looks like they made two form the Ocean Pro 1991 Orderbook.

    Pro 650 AVX Aluminum Head Race Gas- EP105
    Domes shaped for race fuel
    Designed for high compression motors
    Dyno and race proven
    27% more cooling volume
    3 cooling line bosses
    Additional mass above domes
    Domes recessed .040
    Mill up to .040 without recutting domes.

    Pro 650 AVX Aluminum Head- EP100 Pump Gas Domes
    Domes shaped for 95 octane or lower
    Horsepower gain throughout powerband
    Dyno and race proven
    27% more cooling volume
    3 cooling line bosses
    Additional mass above domes
    Domes recessed .040
    Mill up to .040 without recutting domes.

    Not sure that this is much help

  3. #3
    PWCToday.com Is My Home Away From Home cavemanX2650's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    it gives me a starting point !! thanks


  4. #4

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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    185 psi I was told with a stock gaskette
    Last edited by anthony; 10-11-2010 at 11:33 PM.

  5. #5
    PWCToday.com Is My Home Away From Home cavemanX2650's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    Quote Originally Posted by anthony View Post
    185 psi I was told with a stock gaskette

    LOL j/k


  6. #6
    Banned motoman96's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    Cavey, that head will put you around 318psi, just run pump gas an hold it WFO as long as you can.lol

  7. #7
    PWCToday.com Is My Home Away From Home cavemanX2650's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    Quote Originally Posted by motoman96 View Post
    Cavey, that head will put you around 318psi, just run pump gas an hold it WFO as long as you can.lol

    sounds great M&M , ill try it out in the morning and post back with my results


  8. #8
    PWCToday Newbie bellamy24's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    Hey Caveman, did you ever end up using this head? I came across this thread and have the same head on my ski where it makes 210/215psi.
    Attached Images Attached Images
    Last edited by bellamy24; 09-28-2011 at 10:54 PM.
    __________________________________________________ ____

    '89 650sx silver, Ocean Pro head, .50 over, 44 mikuni, '86 coil, 15.5 impeller, K&N FA, bilge.

    '92 650sx stock

  9. #9
    Top Dog rhugo21's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    I bought this from caveman about a month ago....does it really make 210 psi? What kind of head gasket are you using?
    2014 Superjet

    Midwest Wave Warriors



  10. #10
    PWCToday Newbie bellamy24's Avatar
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    Re: swirl dome head for a 650 kawasaki ,..how much compression ?

    These readings were taken on 4/28/2010 that I found in my phone and are actually higher than 210. They may have been taken before the ski was actually run so they may not be as accurate as the consistent 210/215 I've been getting since running it. Not sure about the head gasket, is there an easy way to tell? This engine was built by a shop in upstate SC I was told when I bought it so unsure of all the specs other than the .5 overbore and new top and bottom. I put it into a ski I built and ran it for the first time. I'm halfway expecting it to blow up or melt every time I ride it.
    Attached Images Attached Images
    __________________________________________________ ____

    '89 650sx silver, Ocean Pro head, .50 over, 44 mikuni, '86 coil, 15.5 impeller, K&N FA, bilge.

    '92 650sx stock

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