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 - Oliver 550 Purchaser Checklist - by Greg Sheppard. Pound for pound the 550 is better than anything I've seen. It has great power for its size and can really hunker down and lug. Classified as a 3-bottom plow depending on soil conditions. I personally don't think it can be beat for a utility tractor in the 40 HP range. They are extremely thrifty on fuel, at least my DSL is. Most drive train parts are fairly easy to get. Sheet metal is probably the hardest thing to
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