Brad Bell
Proven Member
- 192
- 5
- Aug 15, 2014
-
Levant,
Maine
I have gone through now, 3 different valve cover gaskets and all of them are leaking under boost. Normal driving everything is clean and sealed. However once I do a strong pull on the car, oil will spray out of the gasket causing a huge mess in the engine bay. Obviously there is too much crankcase pressure under boost for the gasket to hold so it blows open. I'm familiar with the concepts of the PCV valve system, how the valve will only vent crankcase pressure under vaccum conditions, boost however the PCV valve does nothing. The only other escape for the pressure is out through the breather tube/fitting attached to the valve cover itself. Currently I'm running a small breather filter from auto zone. I tried boosting the car without this filter (nothing attached to fitting) and oil simply spewed out of the fitting under boost. When I did this I found out there was no leak from the valve cover gasket itself. Making me realize that the problem may be my little filter is too restrictive for the crankcase pressure.
What can I use as a replacement for the filter? I have thought about a catch can venting to atmosphere but not sure if this is the way to go or which one. This whole leaking valve cover thing is really driving me insane. Thank you guys.
What can I use as a replacement for the filter? I have thought about a catch can venting to atmosphere but not sure if this is the way to go or which one. This whole leaking valve cover thing is really driving me insane. Thank you guys.