Originally posted by phatstang1
It isn't in line with the inlets. The two inlets "dump" into the catch container. The breather is attached at the top.
And you don't want a closed unit. You need to let the escaped crank case pressure vent somewhere. If it goes into a closed container, I imagine it may possibly cause a mess. This is why most PCV systems either recirculate back into the intake manifold, or back in the old days it just dumped via a dump tube onto the ground. According to Tony, his new diesel Chevy truck still use this dump system.
I imagine you could use a closed system where the catch can scrubs the vaporized oil out of the air and the pressure is allowed to vent back into the intake manifold, but that still isn't a foolproof means of keeping oil buildup out of the mani.
What I ment by a "closed" system was that there was no breather in the system like the old school motors had a breather in one valve cover. The way the LS1/6 PCV system is setup, its a closed system meaning that both breather tubes from the valvecovers plumb right back into the intake right behind the TB and theres no breather in the system. Thats why we need some type of catch can setup to rid the intake system of oil.
Ill look into the Moroso units. I know alot of LS1 guys use the Greddy can with good results.
Keep it coming, I might learn something for you import folk afterall
j/k
