Most people have a problem with their oil return backing up. I was having this same problem. What I did was I disconected the black box on the back of the motor and used a compression fitting to close the hole. I got rid of my PVC valve. I installed a morso catch can drilled a hole in the front of the valve cover and ran a hose to the catch can. Now the catch will be venting the oil vapors. Then I connected a hose with a one way check valve; with a lawn mower fuel filter in between the valve cover and hooked the hose to the intake manifold. This solved my oil backing up problem. But I am not sure if this is bad for the motor, since oil vapors will be going back into the motor at idle not during boost. This helped the oil drain quicker becasue of vaccum at idle. Can some shed some light and tell me if this sounds like a good idea? Thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drvfast &raquo;</TD></TR><TR><TD CLASS="quote">Most people have a problem with their oil return backing up.</TD></TR></TABLE>
No.


Your line should be large enough that crankcase pressure shouldent matter. Its a gravity drain and is not sucked out of the turbo.

It sounds like you now have no vent for the crankcase and one vent on the valve cover that goes to a catchcan whick is connected to the IM and has a pcv/one way valve in it. right? So when you boost and get blow by, where does the built up crankcase pressue go? your one way valve is shut under boost and the stock black box is blocked off. Sounds like your gonna be pushig oil out of every seal on the block to me.

 

I guess i am going to take it off.