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  1. #1

    Join Date
    Feb 2009

    2005 GTX Compression Readings

    On my 2005 GTX, I read 175 psi in each cylinder. On my 2005 GTX Limited that has the supercharger, I read 150 psi in each cylinder.

    The standard GTX has a compression ratio of 10.6:1 and the supercharged GTX has a compression ratio of 8.4:1. That being said, each ski will have a different normal PSI. I have looked in the service manual but was unable to find it. Are those the correct values?

  2. #2
    tweeker's Avatar
    Join Date
    Jul 2007
    Denver NC
    Sounds right but to check real cylinder leakage do a leakdown test

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