jaluhn83
Full Access Member
It's ok, don't stress about it.
Compression test is never really about absolute pressure, it's about differences because there's so many variables. #6 is the only one that's really out of family. Book spec is within 75% of max, i.e. with 440 max, 330 should be minimum, so it's low out of spec, but not badly so. No specific value you should see or number of strokes to get there.
I would want to do a head job on it since I would bet the problems is worn valve seats, but unless there's other symptoms of a problems you should be fine for a while.
Compression test is never really about absolute pressure, it's about differences because there's so many variables. #6 is the only one that's really out of family. Book spec is within 75% of max, i.e. with 440 max, 330 should be minimum, so it's low out of spec, but not badly so. No specific value you should see or number of strokes to get there.
I would want to do a head job on it since I would bet the problems is worn valve seats, but unless there's other symptoms of a problems you should be fine for a while.