Any engine, gas or diesel loses 3% of its power for every 1000 feet above the ocean. Some companies offered high-altitude pistons if tractors were used at heights of 4000 feet and never lower. "Altitude compensators" were also used - that later became called "turbochargers."
At the request of a customer we put high-altitude pistons in a Deere 2020 gasser once - at 1200 feet above sea level. It ran so bad we had to tear it back apart. Even with high-test gas and the timing retarded it knocked something awful.
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Today's Featured Article - Tractor Profile: Allis-Chalmers Model G - by Staff. The first Allis-Chalmers Model G was produced in 1948 in Gasden, Alabama, and was designed for vegetable gardeners, small farms and landscape businesses. It is a small compact tractor that came with a complete line of implements especially tailored for its unique design. It featured a rear-mounted Continental N62 four-cylinder engine with a 2-3/8 x 3-1/2 inch bore and stroke. The rear-mounted engine provided traction for the rear wheels while at the same time gave the tractor operator a gre
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