07-13-2002, 05:11 AM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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Bob, You can use a pcv valve to get negative pressure in the crankcase. That's what I use, and it does pull some vacuum. In one valve cover I have my pcv valve and in the other valve cover I have a vacuum break. If you have a oil dip stick hole, you'll have to fill it with atv. My vacuum break is set at 5 inches, so I'm always running negative pressure in the crankcase. After running the engine, you can pull the pcv valve and the sound is just like opening a can of coffee, pssssss, so I know it's working. Also with running a negative pressure you can use rings with less tension because the negative pressure seals the rings, and less tension is more horses......just my 2 cents for today
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Jack
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