pan evac system

[BigHemi]

Originally Posted by 04ctd

good write up.

i have a PCV on the passenger side, and a big MOROSO breather on the driver side valve cover.

so i am stuck in the middle, it seems.

i sorta thought the PCV was to put a suction on the bottom ring on the piston, and make it seal better.

??

Creating a vacuum in the crankcase does help ring seal, but a PCV valve is dumping that oil mist right back into the intake manifold...NOT where you want it to be going.

Either just use vent breathers, or take the low buck approach w/ the header evac setup. If you have the money and have a motor that either has a long stroke or uses low tension rings, then get a vacuum pump. I'll only use a belt driven pump, the electric ones aren't worth it in my opinion.