My experience has been this. I have a MH with an absolutely stock F226 continental that I pull. I run 100LL in it for the sole reason of consistancy. Its been 2 years since I switched to the 100LL, I have not had to touch the carb.
Previous to this everytime I added gas, I would have to readjust to get it to run right. Hooked to a dyno, there is no measurable difference in max power between 87 pump gas and 100LL. But the carb had to be adjusted for every fill of 87 to get max power.
Also the 100LL is more resistant to boiling which I was having a problem with the 87. Full load on the dyno, and you can watch the gas boil in the sediment bowl.
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Today's Featured Article - Restoration Story: 1951 Farmall H - by The Red (John Fritz). I have been a collector of Farmall tractors since 1990 when I first obtained part of the family farm in Eastern Indiana. My current collection includes a 1938 F20, 1945 H, 1946 H, and the recently purchased 1951 H. This article will focus on what I encountered and what I did to bring the 1951 NEAR DEATH Farmall H back to life.
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