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Tom Wesenberg · 07-20-2013, 09:38 PM

If you have blowby, then I'm sure you'll benefit from a set of .060" oversized rings. If I had a vacuum port I could connect a vacuum gauge to my 28 for a comparison of readings, but as others have said, you might just drive it since you have pretty good compression readings. Have you looked at the top ring gap yet?

A 4 cylinder won't give a real smooth vacuum reading. I would look more for a sudden drop which could indicate a slow to close valve.

07-20-2013, 09:38 PM	#24
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Compression test results If you have blowby, then I'm sure you'll benefit from a set of .060" oversized rings. If I had a vacuum port I could connect a vacuum gauge to my 28 for a comparison of readings, but as others have said, you might just drive it since you have pretty good compression readings. Have you looked at the top ring gap yet? A 4 cylinder won't give a real smooth vacuum reading. I would look more for a sudden drop which could indicate a slow to close valve.