Thread: How to get PCV to work instead of valve cover breather!

I didn't do my PCV research before I got or installed my IC so I have no idea what it has PCV wise, I'll just post pics. Right now I just have a breather on front valve cover and a breather on back SC nipple which idk if it even does anything.

LIM being used, bottom one


IC on motor



I have some more if these don't help.

Originally Posted by Pure2sin

Depending on what kind of IC core you have you either have a funcational rear and non functional front or you don't have either. If you don't have either you can run a front valve cover on the rear head and a catch can off the rear.

Is the older WBS Intercooler drilled in the back for PCV? Do you have any pictures of the Intercooler?

Matt, does that mean its working though? I'm pretty lost...

If it has the back hole and the matching hole in the intake manifold then drilling the port on the L67 throttle body should work.

I feel pretty dumb but I don't even know what hole you're talking about lol. I posted my LIM, do you see the hole there? I have a few more IC pics if you need them...

I started typing and missed the pictures of the WBS Intercooler. It looks like there current generation Intercooler and intake manifold.

Originally Posted by sseilmnop

I started typing and missed the pictures of the WBS Intercooler. It looks like there current generation Intercooler and intake manifold.

So what does that mean? Lol

See circled hole in blue.

You have the rear PCV hole.

Awesome, thanks for that lol. So what needs to be done to the rear to make it work correctly?

But on a stock L32 the SC nipple connects to the TB between the butterfly and MAFS. My nipple just has a breather on it. Doesn't something need done?

Drill and tap TB just like the pictures show.

So should I tap the TB and then have a split line going off that to the front valve cover and to the back SC nipple?

Put a cap on the nipple on back of supercharger, it doesn't go anywhere. Connect just like I show.