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Thread: compression test for viper 70

  1. 04-12-2009, 04:15 AM #1
    vindell
    vindell is offline Senior Member
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    compression test for viper 70

    what is acceptable copression, pulled 80lbs with throttle wide open.
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  2. 04-12-2009, 04:33 PM #2
    TeamNeilson
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    under 90 and you consider rings and check the cylinder walls for deep scratches.
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  3. 04-24-2009, 07:33 PM #3
    vindell
    vindell is offline Senior Member
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    checked compression a week ago around 70, had a inkling test was unaccurate due to bad tool. re-checked tonight, pulled a little over 100. am i happy. what should a new 70 cc read
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