The general rule is a peak of around 1 ft lb for every cubic inch, give or take. (That number has not changed appreciably since the beginning.) A 450 size car engine generally makes 500 or so etc. Old tractors tend to be in the ball park (usually less) but peak out down around 800 to 1000. The old machines just turned sooo ssslooow... Getting the RPM up to make useful power is an ongoing struggle, but nowadays usable rpm seldom goes over 2500 for efficiency reasons.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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