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Thanks guys, the leakdown we were measuring was in excess of 70% on two (out of 12) cylinders.
I'm thinking with the tolerances we just measured a gap of 0.007" in a 3.2" diameter piston is just too large (gap should be 0.001" per inch of diameter so about 0.003" max tolerance between piston and cylinder). I wonder if due to that the rings were just not seated right and we got the numbers we did?
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