Think the only test of a M gasoline tractor at Nebraska was in 1939 and before they officially were making a gas M. Shorly before IH quit making M tractors they came out with some parts that they claimed would make about 4.5 horsepower more. 3-7/8 aluminum pistons a caburetor change over kit and some other items. Of coarse later more power up things came along. IH didn't tune the engines for maximum power. They were set to work long hours at full load if needed. When dynos started being more common IH sent out bulletins warning dealers about just setting the engines to full power.
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Today's Featured Article - Talk of the Town: Repairin a Gas Tank - by Staff. This interesting discussion is from the Tool Talk Discussion Forum. Remember that safety is your first priority - make sure you know what you are doing before attempting a potentially dangerous activity!
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