Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro
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  1. #1
    PWCToday Regular
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    Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro

    So I picked up a ocean pro head, it is stamped 25cc 92 octane,
    And I'm wondering what gasket I should run? I have seen people claiming to have 180 psi with these heads in the past. But I have also seen people claiming it well put them over 180. And curious to anyone running this head that achieved 180 psi what head gasket was used. Was thinking cooper but wanted to check here first thanks20180619_110554.jpg20180619_110542.jpg

  2. #2
    PWCToday.com Is My Home Away From Home BLRider's Avatar
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    Re: Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro

    Those were originally made as an upgrade to the small pin motors and they were 29cc +/- at the time, they also came with two different thickness head gaskets so you could choose the compression that worked for you. 25cc is the same as the "D" cast head on a big pin motor. If your current head is a D then it won't change the compression at all.
    Never argue with an idiot, they will drag you down to their level then beat you with experience.

  3. #3
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    Re: Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro

    I was under the impression that d heads were 27.8, and 25 cc would be 2.8 cc less which would bump it close to 30? But my head is actually marked as a C which I thought was 28.3 cc.... Am I miss understanding? 750 cylinders and heads.jpg

  4. #4
    Top Dog TMali's Avatar
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    Re: Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro

    Im running this ocean pro 25cc head on my big pin, im putting out somewhere around 170 psi with a stock gasket

  5. #5
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    Re: Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro

    Guess I'll try with stock first to see were I am at... My compression on my motor which is stock is 150 psi..

  6. #6
    PWCToday.com Is My Home Away From Home mcn6's Avatar
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    Re: Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro

    Those were designed for non ethanol 92 so be very careful with fuel quality... No old gas, no timing advance, premium only/pump a gallon into the tow vehicle to purge the pump hose of any 87 octane and do not let the girlfriend/wife pump the gas send her in after the beer instead...

    On edit: This applies to #29 and #24 cylinders only.

    Quote Originally Posted by FlipediS View Post
    Guess I'll try with stock first to see were I am at... My compression on my motor which is stock is 150 psi..
    Last edited by mcn6; 06-20-2018 at 10:59 AM.



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  7. #7
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    Re: Anyone run ocean pro 25cc head? What gasket? 2000 sxi pro

    you'll be fine with it.as mentioned,they were made for the small pins originally,the pro has ports high enough to drop psi to a more than safe level.

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