Quote:
Originally Posted by Gaz64
So where did 8000 cfm come from?
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I asked Ellie to solve this math problem for you. She said that let's say he's revving at six grand with a WOT in first gear, and remembering that a cylinder only pulls in air every other rotation at 6,000 RPMs, it’ll pull in air 3000 times. 3000 times 427 equals 1,281,000 cubic inches per minute, which is the same as 741 cubic feet per minute. And since you're staying in first gear, you're spinning your tires hard and just barely moving, so the time to traverse the mile may be ten minutes or even longer. Ten times 741 CFM gets you pretty close to the 8,000 figure he quoted. Ellie's pretty smart, so that sounded good to me. She's gone to sleep now, so don't ask any questions.
