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  1. 08-04-2006, 07:40 PM #1
    JIGnJON
    JIGnJON is offline
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    What should the compression be???

    Hey guys, anyone know the compression rate for my motor on all 4 cylinders. 1987 Johnson 88 SPL I want to run a compression test to make sure everything is in order. Thanks!!

    Engine model # J88MSLCUS
    serial # R 7484478


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  3. Bassmeister
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    #2 08-05-2006, 05:10 AM

    Re: What should the compression be??? (JIGnJON)

    As guages read differently, the #'s aren't as important as all cyls being within 10% of each other.
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