I used high altitude pistons. My machine shop measured and determined that I should be seeing a 9:1 compression. My measurement showed closer to a 9.5:1. I run 91 octane for safetys sake. I have had 87 in it with no knock/ping/preig problems. They said I may have problems with a stock ignition system. My next tune will include advancing the timing to try to get a better burn. Hopefully I can pull more fuel out of the motor. I am also working on a cool overflow tank for the radiator.
When I get all this sorted out, it will be on the pulling track...
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Today's Featured Article - Haying Before Tractors - by Owen Clark. Hi guys! At age 8 (1927, am now 79) I was learning how to drive a stacker team on the old homemade A-frame wooden stacker, on three of my uncles` dairy farms in Star Valley Wyoming (south of Jackson Hole, on the Wyoming-Idaho border). There was one steam tractor in the Valley, owned by an entrepeneur who used it to run his grain threshing machine, that he hauled from farm to farm for the fall harvest. We used teams of horses not only on the stacker, but on the buckrake to buck the dried
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