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  1. #1
    Member wishihadasuperjet's Avatar
    Location
    windsor, ontario
    PWC
    97 superjet
    Posts
    40

    Default to much compression?

    today i did a compression test on my ski after pretty much filling it with water after a turn sub i turns out i have 210 PSI in each cylinder i remember when i bought it last yeari did a test on it and it had 175 per cylinder the only thing i have changed is i put a b pipe on it but i had a speedwerx pipe on previously
    should i be running race gas?
    or is that to must pressure?

  2. #2
    Member
    Location
    Harrison Hot Springs
    PWC
    '97-1100stx
    Posts
    15

    Default

    You may have carbon buildup on top of your pistons causing the comp. to increase. If this is the case you should correct the problem. Good luck!

  3. #3
    Member mikeski555's Avatar
    Location
    nor-cal and vancouver is.
    PWC
    lots of superjets, a 800sxr,some wave blasters, a waveblaster 2, a 650 sx, some 550s
    Posts
    84

    Default

    There is some water in the engine that is bumping up the compression from the subbing. Over 190 psi, race fuel is typically recomended.

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