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compression test?

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Old 02-26-2009, 11:28 PM
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what kind of numbers should i expect?
Old 02-27-2009, 11:00 AM
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Primary thing is to make sure the numbers are consistent across all 4. Depending on the compression tester used you can see anything between 150-230psi. Not all gauges are calibrated the same.
Old 02-27-2009, 01:49 PM
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Not all gauges are calibrated the same.

So you are saying only reason I might have lower compression psi is due to comment above? I thought It should be somewhere between 200 to 240, isn't 150 too low? I would expect b18 motors to be around 150 to 170 psi.. then again I don't know what i don't know.

Thanks!
Old 02-27-2009, 03:10 PM
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Helm's manual says:
Nominal = 228 PSI
Minimum = 135 PSI
Max variation = 28 PSI
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