Love the Gravely's, I've a half a dozen on the farm, and have used them since the 60s.... Your end gap is waco, use 010 over rings and knurl the piston skirt, so it' doesn't tip. Clean the ring groves completely and accurately measure the side clearance. Rings seal by the expanding gasses getting behind them and forcing them against the cylinder. If carbon is present, the only sealing is with the ring tension which is not enough. Excess side clearance can be corrected by machining the ring grove square and installed a spacer, available from ring suppliers. New pistons, like available for the L are much cheaper then "restoring" the original. Pistons are forgiving for taper, but not out of roundness. Check carefully. If you don't belong to the Gravely Club, you're missing the boat. It's been around for over 20 years and it's magazine is excellent. Drop a note if you need help or info. Larry
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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