Why are so many folks halving to run catch cans on NA cars these days?
I NEVER ran a separator or catch can until after my 3rd or 4th round of cranking up the boost. 8 psi and down, I never needed it. It wasn't until I'd exceeded the crank case vent's ability to cope that I went to a separator.
I guess what I'm saying is, that maybe you have a problem with your motor that needs to be addressed?
I agree you shouldn't have crankcase pressure exceeding the stock PCV. You may have an issue elsewhere.
I'll have to try to find my old post on here from 2003 when I made a thread about the oil catch can I made. Rick 91GT has picture of an elaborate catch can in a thread on here.
Well to be honest, I don't have an issue with the motor (that I am aware of). I am just dressing it up and thought that it may be something that would lengthen the life of my engine. So no, it's not a necessity.
I typically dont put them on NA cars unless it is for the vacuum pump.... This is a Stephs tank, that I welded additional bungs in with lines I fabbed...