supercharged PCV setup?

the98stang

Active Member
Aug 12, 2005
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Clovis, CA
I want to know what all you 4.6 guys are usnig for PCV setups. I heard the Supra PCV's are good, but I don't know if they will fit my 00' GT. Does any one have a part number for the PCV/grommet?

Also, how can I set up an oil seperator? Should I use a valve cover breather? Any info is appreciated!

Tanner
 
I think alot of people have a one way valve installed....but thats a bad idea IMHO. You want the crank case venting, ESPECIALLY @ WOT/high RPM...and that one way valve only allows for that under part throttle.

A. Put little breather on your valve covers

B.route the PCV lines into the powerpipe/inlet side of the blower, with an oil/water seperator inline before it gets the the blower.

C. Do the same as above but vent the line straight down towards the underside of your car.


A. will probably put a thin oil layer over everything after a while

B. Could put a thin coating of oil on your MAF (unless its after the MAF...but im not sure if thats a good idea)

C. Could over a long time put a thin coating of oil on the underside of your car.

Me? I went with C, and with no oil spereator...its a bit dirty under the car, but not bad at all.
Im not sure how bad it will be after the FI is complete though.
But theres no way im going to risk coating the MAF...that = LEAN as I have a blow through setup....I even went as far as not using any oil based air filters....I run HKS style foam filters.
They are the EXACT SAME as these...just cheaper off EBAY and say "mazdaspeed" on the center button instead of HKS.
http://www.nipponpower.com/product.phtml?p=79&i=1
 
Unless you are concerend with emissions, just get rid of your PCV setup altogether. Aside from emissions the PCV valve is worthless, especially on a blown motor where those one way check valve will hardly ever open. You can either run a filter on the valve cover like hotmustang331 suggested, or you can also run some sort of crankcase vacuum like Stan suggested.

With a blower, you are going to have some pressure in the crankcase. So I would recommend running a filter/separator on the valve cover and just put a vacuum cap wherever your PCV hose connected to the intake system.

Something like this:
View attachment 408965

Places like Moroso/Competition Engineering, Allstar Performance, K&N, etc will make these products. I know SHM carries one specifically made for the DOHC valve covers, but I don't know if they have one for the 2 valve yet. Might call and ask.
 
^Will unplugging and removing that little PCV valve on the pass side valve cover cause any porblems? I seen it there, but all it does is freegin leaak oil it seems....so I was wondering if you knew exactly what it did :shrug: .
Note: reason I ask is because it has a sensor plugged into it....didnt know if it would cause an engine light to come on.
 
Yes, the later model Ford's got heated PCV valves. The primary purpose of this was for cars that would be driven in cold weather climates. It's not uncommon for moisture to accumulate within the crankcase and if it is below freezing outside and the motor is just being started, there is a possibility of the throttle blade icing. The heated PCV valves are supposed to help eliminate throttle blade icing.

I cannot find any specific heated PCV valve codes in any of my manuals, so I think by just unplugging the heater, you will just be turning the heater off. Shouldn't set any codes.
 
Well I'd like to keep the PCV system because CA is really gay when it comes to smog.

Keep in mind I will be running 8-10 pounds of boost, so the pressure won't be that much. Do you guys think a better flowing PCV would be sufficient such as the Supra PCV? What if I capped off the boost pipe bung and put a breather on the driver side valve cover?
 
I'd like to keep the PCV system so I can pass smog. I just need to know what PCV will be best for my set up. I'm thinking either the supra or TB PCV. But I'm not sure which one will fit/work better. Any ideas?