If you have an oversize piston then you have to have an aftermarket increase power kit that increases cu in and compression and that means the block has been bored to accept the thicker cast sleeves from a late 8N as the 9N had the paper thin steel sleves. Either that or the sleeves were removed and early Mecuray car pistons installed and if that has been done then you are going to have to have it bored for the cast sleeves of the late 8N as a standard normal for that engine will never be able to make stay in place. And for those aftermarket sleeve & piston kits it will be almost impossible to find rings for them as each company that made them would use there own designed ring. A factory bore cannot accept and there never was an oversize piston made for that tractor. Measure the bore the sleeve fits in and post that, it will tell us if you can even get sleeves for it and what type to get, as far as rings for an oversize piston forget that, probably not going to happen unless you can find a place that custom makes rings for the dollars in the govermint mint. I am 71 and still have the 2N that came to live with me when I was 8 months old and a 9N with the engine apart for 11 years. And if you have the fiber cam gear they are known to turn on the shaft. Check the N series section of this site and back in archives you will find a lot of information about that.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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