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Newly Rebuilt B30, Compression Test Results? 140-160

posted by  KlausC on  Fri Aug 11 09:35 CST 2006
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

Worry about having the valve clearance to tight, do not worry about compression testing. This is a Volvo B30, not a honda civic 4 banger that revs up to 10K. It takes close to 1,000 miles to break the engine in, and most of that is for the rings.
Do not pay attention to the speedo during breakin, worry more about going over 3K rpm and make sure the rpms fluctuate a lot. No steady driving. Change the filter after a few hundred miles and top off the oil, don't change the oil yet.
Make sure the instructor knows this is an iron block engine and that rings will take time to seat. Your current numbers are impressive. You did a good job putting it back together. I would give you an A.

Klaus
Much better than my 1975 B30F!!!
--
(V♂LV♂s 1995 854T, 1998 V70R)






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