The 216 valve covers have 2 acorn-like nuts sticking through the top on studs. The 235 cover has 4 machine screws at the bottem flange in threaded holes in the edges of the head. 216"s are no good if you expect high rpm and high speed on an old engine. 216"s were in deuce & a half ton trucks during WWII. With a little knock or a drop in oil pressure the babbit bearings could be, " taken up ", by removing shims and would compensate for bearing wear, keeping the engine in-spec and running for a long time to come. I"ve had both and still run a 216 in a "46 half ton. 235"s became more popular, I believe, because of the ease in changing bearing inserts. Both engines had the oil filter canister...as an option. The biggest draw-back to an older 216 or 235 was the relatively long piston stroke which lead to greater cylinder wear than a shorter stroke engine, which lead to greater oil consumption and shorter engine life between rebuilds.
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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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