Posted by Janicholson on August 03, 2020 at 16:58:11 from (24.240.46.228):
In Reply to: Gas vs diesel vs LP posted by Chris NW Ind on August 03, 2020 at 16:37:51:
Diesel fuel=139,000BTUs/gallon Gasoline !124,000BTUs/gallon Propane 91330/gallon. Diesel engines have higher compression ratios, and when burning without over fueling in an efficient engine, are the most efficient (not considering fuel costs) Gasoline, though less BTUs, and less compression, and when just below the spark knock threshold in timing, can produce more horse power/cubic inch. (many will argue, but this is not racing.) The propane is at a BTU disadvantage, but can stand a much higher compression ratio than gasoline. When fueled correctly they can be as powerful as gasoline, but much more thursty and considering fuel costs, they come out comparable. This is a generalization, and not going to fit everyone's opinion. Note the diesel in the 450 has less compression than more modern Driect injection style. The gas 450 was designed around what fuel would now be considered 80 or less octane (R+M method) And the propane engine if equipped with an IH propane head, probably still could use a bit of compression. Jim
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Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
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