Normal compression?

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09-17-2020, 12:06 PM

Hulley

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Normal compression?

On a 911SC, would compression readings of 140-145 (all cylinders) be considered normal or healthy? I seem to have read somewhere people posting 170-180psi, not sure if that was correct.

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09-17-2020, 12:58 PM

theiceman

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on a used engine i would consider it healthy, but opinions may vary.

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