Re: m rebuild ?

Posted by wayne swenson on May 14, 2005 at 12:45:23 from (216.235.172.176):

In Reply to: m rebuild ? posted by gtg155 on May 13, 2005 at 12:05:23:

.005" on one side of the cylinder plus .005" on the other side equals .010" diameter wear.
Using the formula (pi X dia.)to calculate circumference the wear (end gap on rings) you will have .031" of end gap wear compared to original specs. This will give your cylinder a working end gap of .040 or larger which equates to great loss of compression or large amounts of oil.
I would sincerely recommend replacement of rings & cylinder liners.
Your best bet is to measure the wear with an inside micrometer.
Just remember: .001" of diameter change equals .003" of ring end gap change.
Conversly, use a feeler gauge to measure the ring end gap at the bottom of the cylinder and re-measure just below the ridge at the top. Divide the difference by 3 to get diameter change(cylinder wear).

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