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#1
12-13-2008, 08:37 PM
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Vacuum pump?
Can you put a vacuum pump on any engine, or does the engine have to have special rings? I've heard they can give you another 25 to 30 hp.
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#2
12-13-2008, 09:19 PM
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Are you talking about pumping out the crankcase? That's about the only thing I can think of that would even maybe increase HP.
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#4
12-14-2008, 01:12 AM
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Race engines run a vacuum pump that keeps a vacuum/negative pressure in the crank case, so the pistons are not moving against air. Adds power to engine. Jegs and Summit carry them I think.
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#5
12-14-2008, 01:14 AM
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#6
12-14-2008, 05:59 AM
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thought that might have been what you were talking about. I can't say if its worth the effort or not, I've never tried it. I know they also used to use a hose connected from the crankcase to the collector of the headers to help scavenge gasses and reduce the pressure inside the crankcase.Might be a cheaper way of getting a smaller measure of the same effect.
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#7
12-15-2008, 04:38 AM
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If its 25 to 30 hp for $400, that might be worth it. But I think you need to use special piston rings.
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