I recently took my head off and cleaned the itake manifold and much to my disgust it looked like oil was getting pulled in from the breather line on the valve cover down through the turbo and fed back into the manifold.

I have the breather line running to the intake piping right behind the filter.

Does anybody have any suggestions? Should I run a "trap" of some sort on the line? What about one of those cute little filters?

 

get a oil catch can.

 

if you are indeed getting oil from your valve cover breather, you have serious problems. Now, if you're getting oil from the PCV line, that's when you'd use a catch can.

 

Why though? When under boost there is a vacuum sucking on the line from the valve cover to pre turbo. Under normal, healthy, boost conditions, wouldn't excess crank case pressures (w/ oil) be sucked out through this line?

 

no, excess crank case pressures would be removed from the crank case, not the valve cover.

 

I don't think that excess pressure in the head is causing the oil to migrate. I think that when 7600 rpms of flying valves is splashing oil around and a majorly hungry turbo is creating vacum in the line that opens up next to splashing oil is when the oil moves down the line.

I am going to try one of those little breathers first.

 

This one topic really caught my interest. It seems that no one is really running an adequate setup. I want something that will always (under vacuum, atmosphere and boost) pull out crankcase
vapors and pull in fresh air, and without the aid of any pumps.

Can I make the exhaust create a vacuum? If I use a tube going into it at a very heavy angle? If I do this, couldn't I have that pull out my vapors and pull in fresh air from a valve cover breather filter?

I've been thinking about this topic for a while now, and am getting frustraited with it. It seems that nothing so far is good enough.

 

simple link that will cover all of your needs
http://www.theoldone.com/components/breather/