PCV valve with supercharger
 

Anybody running a pcv valve with a roots style supercharger?
It looks like the older merc 525 and 600 sc's used one that in mounted in the back of the intake manifold.

Re: PCV valve with supercharger
 

The pcv valve would need to be before the supercharger . the intake will be pressurised

Re: PCV valve with supercharger
 

I would avoid using a PCV system on a SuperCharged engine. Any hot oil from the engine will run back through the supercharger, and can cause detonation.

Re: PCV valve with supercharger
 

Rummrunner,
Thanks for the reply. My motor blows a little oil out of the valve cover breather after I run it hard (extended periods of boost). I was considering running the pcv valve until I read your post. Never considered the hot oil causing det. but it makes sense. The last thing I want to do is make the air/ fuel charge any hotter. I might try to plumb the v/c breather to a "catch tank" of some sort.

Re: PCV valve with supercharger
 

Plumb the crankcase vent into the air cleaner. Use a automotive sponge like breather in the air cleaner to soak up any blowby oil. just change it out every few months. They're only a couple bucks and it will keep your engine compartment clean.

Re: PCV valve with supercharger
 

Mine has that pcv in the intake. I believe it is for the boost reference of the carb.

It does not go all the way through the intake.

Re: PCV valve with supercharger
 

Griff
Is that what #2 is used for?