Quote:
Originally Posted by Flash68
What tank are you running? My understanding is that most all tanks have some internal baffling for de-aeration purposes.
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Sounds like a stock GM setup, which is a hybrid dry sump. If so, you need your breathers, but can be plumbed through Petersons breather can, and then to the tank.
As Greg said, if you have a pump with scavenge stages and are pulling vacuum on the crankcase, you need two additional pieces. A vacuum regulator to limit the amount of vacuum pulled on the crankcase, and a pressure pop off. Most pop offs are plumbed back to the tank. This is just a safety valve for a sealed crankcase. If the pump has an instance when it can't pull a vacuum, with the crankcase sealed, the pressure has no where to go, and usually pushes past a seal. The pop off, lets that pressure be evacuated to the tank, while still allowing the crankcase to be sealed.