travisnd

Wouldn't a PCV valve prevent oil from migrating from the passenger side valve cover to the throttle-body whenever the conditions were right for that line to be pressurised?

The valve would close and crank pressure would be vented through the valley cover PCV port like normal. When under vaccum, pulling in fresh air to balance pressure, the PCV valve would open and the line would operate normally right?

Thoughts?

slow ride

Fresh air line is also the blow by outlet under load (no vacuume) The PCV system only draws air into the intake during low throttle high vacuume conditions. Either run a filter on the oil cap (simple) and cap the line to the tb or run the fresh air line to a catch can with a breather. Yes this will draw in a tiny amount of unmetered air, but only during closed loop conditions and the fuel trims should handle it no problem.

I run the the fresh air line and I also tapped the plug on the rear of the drivers side valve cover to run two 3/8 lines (one from each valve cover) to a vented catch can. Working great for the past 3 years. I also have a sealed catch can in the pcv line from the valley cover to clean up the manifold a little bit.

Maynor29

I'm about to install the two catch can setup as the second picture in this thread shows.

I'm getting so much oil in the intake on my 427 LS2 on track, I'm going this route to hopefully, eliminate the issue once and for all. I got meatballed for smoke and pulled the intake tube to check and sure enough, a ton of oil in the throttle body and intake.

John
E36 LS2