As TV indicates, the clearance should be measured with accurate bore gauges/mics. The use of a .009 feeler is so thick it could never bend around the radius or the piston, and the ring land diameter is way smaller than the skirt. the piston clearance is measured at the center of the skirt, about 1/2way up to the beginning of the ring land diameter,from the lowest point on the skirt, 90 degrees from the piston pin. Pulling a ribbon feeler through that should pull with about 3 to 5 pounds of force. with oil on the skirt, and the feeler perpendicular to the pin, no rings. a A .0025 feeler will bend and conform correctly. Jim
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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