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Compression test?

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Old Apr 1, 2017 | 02:03 PM
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enrand
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Compression test?
Preparing to perform compression test on 360/390. No knowledge of motor history. What are normal readings for new or "good " stock motors?
 
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Old Apr 1, 2017 | 03:20 PM
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HIO Silver
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Originally Posted by enrand
Preparing to perform compression test on 360/390. No knowledge of motor history. What are normal readings for new or "good " stock motors?
More than 100 PSI and no more than 15 percent difference btwn adjoining cylinders.

Don't forget to disconnect the coil and pin the throttle wide open.
 
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Old Apr 1, 2017 | 06:14 PM
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Thanks for the info
 
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