Procharged LS1 breater tank setups
I looked at the MM setup, but couldn't swing it right now, so I used a cheap oil sep in the line-after a short drive, I had oil in the sep., so I switched from the valley cover to the truck PCV valve in the pass side, no more oil
I use a breather in the oil filler, so hopefully that allows some crankcase pressure to get out, since the PCV doesn't work with a loss of vac.
I also use a check valve in the PCV line so I don't blow boost into the engine
Stock Valve covers, driver valve cover PCV valve into moroso oil/air seperator (3/8" ID hose), into a McMaster Carr one way check valve into 3/8" hose into the intake. Pass side valve cover with 3/8" hose into a vented filtered catch can.
The check valve opens (only in engine vacuum going toward intake manifold at .3psi) and is completely closed in the other direction (boost) so I can't pressurize the crank case when in boost. All air/pressre will be forced out the pass side valve cover into the catchcan. When out of boost and in vacuum the setup switches so the check valve opens and sucks crank case pressure out while fresh filtered air comes in through the oil catch can on pass side.
I haven't run it yet but close to starting it up. I figured the 3/8" hose should flow enough since stock was 3/8".






