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Old 03-23-2014, 05:38 PM   #5 (permalink)
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Do a leakdown test to check the check ring condition. I would never hone and re-ring and engine that had any ridge at the top of the cylinders. You will break the rings and destroy the rebuild. I had a piston on my shop counter that had broken a ring and burned a groove down the side of the piston to the oil control ring.

Cylinder walls don't wear evenly and if they are not bored parallel the rings will expand and contract as they ride up and down the bores taper. If you tear it down and the ring end gap is still in specs and there is no ridge at the top, then you didn't need to tear it down, unless the rings got gummed up and stopped sealing properly. In that case I have seen some good techs just clean everything up and put it back together and it worked fine with no measureable oil consumption. Very rarely you see that happen.

regards
Mech
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