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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 07-24-2009, 12:03 AM   #1 (permalink)
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Engine Compression Figures?

Just did a compression test on my m42 and all cylinders showing 180psi, is that a good or a bad reading, what is the factory spec? cheers.
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Old 07-24-2009, 08:06 AM   #2 (permalink)
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Originally Posted by Serge88 View Post
Just did a compression test on my m42 and all cylinders showing 180psi, is that a good or a bad reading, what is the factory spec? cheers.
That should be fine. I believe 150psi is the minimum spec. If they're all the same that's a good thing.
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