So I just installed cams and a DBB FP Green MHI turbo and after few hard pulls and few hundred miles of driving i've noticed oil in the UICP. I have a TiAL BOV and my guess is that when the BOV opens it spits out particles of oil found in the UICP. I noticed a little oil on the compressor wheel side but wan't concerned until I found oil in my UICP.
Now, I do have a Buschur Oil Catch can installed with two 6-AN fittings going into the catch can which drains back into my oil pan. The Catch can is VTA as well so basically four ports. I was told by FP to go back and install the PCV valve back on the car which might help with the issue. I saw the thread about installing 10-AN fitting but I'm wondering if anyone experienced the same issue and solved the problem Any help is greatly appreciated. Also should I have any vacuum lines going back to the Intake Manifold? I want to hear from the people that had this issue and how you solved it.

 

A -10 line from the v/c to a nice baffled catch can and recirculated back to the intake pipe is the way you want to go. Factory PCV valve. If your engine is in good shape ( leak down test/compression and doesn't pop the dipstick out) Then that should solve your problem with the stock engine.

Here are a few threads with information regarding this common problem. Research is valuable .
What oil line restrictor is on your car? Any fp bb needs an oil line restrictor .

https://www.evolutionm.net/forums/ev...urn-smell.html
https://www.evolutionm.net/forums/ev...re-issues.html

 

Abacus, i'm using the FP Black Restrictor and feeding from the head.

 

Can someone verify my catch can is setup correct.
I have the following setup:

1. Buschur Oil Catch Can
a. Bottom port of the oil catch can drains back into the oil pan via oil dip stick
b. Top port of the oil catch can vents via a K&N filter.
c. 6-AN line from side of the valve cover goes to oil catch can (port #1)
d. 6-AN line from back of valve cover goes to oil catch can (port #2)
I run SD intake with no lines connected into and no checkvalves anywhere in the catch can system setup.
My Idle vacuum is at negative 15 in/hg

 

You need to the above. A couple 6an lines through a single vta can are simply not enough.


Idle vacuum on the boost gauge has nothing to with crank case pressure, unless the motor was so worn out that idle vacuum was low. Also, it's not -15psi, its 15inhg of vacuum. . Your's is in line for having cams.