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Thread: compresion

  1. #1
    RXP TJEEZE's Avatar
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    compresion

    160 160 180 is that advanced, do we need to go bac
    A tooth. Or just retard a little or full


  2. #2
    Bob 1tommygunner1927's Avatar
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    Just retard a little. 140-145

  3. #3
    boost junkie skidoochris's Avatar
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    he may have cp 9.5:1 pistons

  4. #4
    RXP TJEEZE's Avatar
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    Yes i do. Its at 135 135 140 now im going to ride it
    In the morning and see how it runs.

  5. #5
    boost junkie skidoochris's Avatar
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    I really like mine, they make a big difference
    but I would never run them on pump fuel

  6. #6
    RXP TJEEZE's Avatar
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    Okay took the ski out Saturday and it didn't run strong like before I changed my head gasket. The timing is not the same I had to back down my fuel pressure to keepit running all the way to around (40 or so psi) and normally at about 60ish. At about a little over a quarter of
    Throttle and about 6700 to 7000 rpm the AFR'S were getting lean and the more throttle you guy's no even worse. I didn't punch it and I saw
    14's on the afr,
    Those running CP pistons what's your compression, or what should it be around .A good ball bark figure.

  7. #7
    RXP TJEEZE's Avatar
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    Is everyone that use CP pistons running the same compression as stock
    Pistons or what are you running.

  8. #8
    RXP TJEEZE's Avatar
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    Is there anyone running CP 9.5 pistons and what's your compression.

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