My understanding is the PCV needs vacuum to open but when your at WOT there isn't much vacuum so you get no ventilation at WOT? When your racing isn't that when you need ventilation the most or oil starts to blow out of bad places (dipstick tube)? If that is correct a PCV valve does nothing to help when racing at WOT or does the Wagner adjustable PCV fix that issue?
I thought about running an EVAC breather to the header collector but these systems say not to run them on a car with mufflers. I'm building street/strip car.
I run a crank case evac. system along with a pcv as my car is also mostly driven on the street. This way I have negative pressure in the crankcase at all times. I was thinking of installing a Holley jet in the pcv vacuum line to cut down on the amount of vacuum being drawn. In doing so, I was wondering if some adjustments might need to be made to the carb to compensate for the richer mixture?
Also, you can run an evac system on a car with mufflers as long as the mufflers are of a straight through design. (Dynomax, Magna flow, etc.) chambered mufflers will not work with an evac system.. I run Ultra Flows.
