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Old 02-22-2010, 02:19 PM
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GregWeld GregWeld is offline
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Right -- because VACUUM in FUEL is the OPPOSITE of PRESSURE in a radiator -- vacuum in fuel will cause it to "boil" (bubbles)... Which is why they like a flooded (no vacuum required) head. The "simple" solution to this is of course - to draw fuel from the bottom of the tank -- and from the REAR of the tank - so that going up hill on a low tank - will cover the fuel outlet with fuel... you can COAST downhill (LOL). And a hard launch will, of course, push the fuel to the rear.

Funny about the little things that people don't think about - but back in the day when I traveled with a funny car -- I learned about a 2 G launch - and how hard the pump has to work in order just to overcome that force! Something you just wouldn't think about ordinarily... LOL.... which is why the fuel tank was in front of the motor... Not sure how they handle that with todays cars - and I'm certain they launch WAY harder now-days!
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