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  1. #1
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    Compression #'s on 2007 250 proXS

    In what range should the compression numbers be on this motor? Thanks for the info.

  2. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #2

    Re: Compression #'s on 2007 250 proXS (RoadrashPaul)

    100-110 PSI, with a maximum of 10 psi variance.



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