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Thread: Compression test results
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09-28-2017, 05:33 PM #1
Compression test results
I got 150psi on all cylinders.
355 11 to 1 comp.
236/244 598 614 if it matters.
Dry test.
Seem normal? I hear it's not about the number it's about consistency.
Also engine was cold, sat for a few days 60 degrees out. I did test one cylinder a few days ago when it was 85 degrees out it was at 180 same cylinder was 150 today but with a different tester.
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09-28-2017, 06:35 PM #2VIP Member
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I have had a cheap tester from AutoZone read low. Borrowed a high dollar one and there was like a 40 psi difference. What I would be most concerned about is making sure there is not a huge variance between the highest and lowest cylinder.
Your numbers seem ok to me. The valve events also have a huge influence on the cylinder pressure. On my neighbors olds engine we bump the cam timing I want to say right around like 4° and it dropped the cylinder pressure from 190 down to 155 160.
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09-29-2017, 08:14 AM #3Lurker
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testers are all over the place. I always look for solid numbers across the board
94 Z28 - 396 - TH400 - 9in - SLOW
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09-29-2017, 02:57 PM #4
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09-30-2017, 06:47 PM #5"The Rock"
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Looks great.
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