Locally the 4020's had problems if they went much past 115-120 horses...Just about all the 5010-5020's around here had problems when turbos were added and the fuel screw was turned too much....The 806 IH's would handle 130-140 horses..My 856 IH ran a much bigger turbo and was run at about 150-160 horses in the field...It carried lots of oil with a truck oil filter added...It was capable of 190-200 horses in the field but puked water in warm weather so had to turn it down...It was run at 300-350 hp on the pulling track and I had no major problems..After the serious tractor pulling was over with we did ring it but nothing else..
A neighbor had a 5000 Ford with a M&W turbo...It stayed together good at 90 horses..
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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