pcv question on supercharged fox

**92306gt** · 05-25-2008, 03:51 PM

i have the breather on the pass side valve cover with the vacuum line to the throttle body. my question is, should i leave the stock pcv setup on there or what ???

**HOTMARK7** · 05-25-2008, 04:40 PM

you should block off the hose on the throttle body because you will pump boost right into the engine if you leave it hooked up. plug throttle body and just run an open breather on the valve cover, and unless it is a really big breather, leave the pcv valve installed.

**wick** · 05-25-2008, 05:55 PM

HAHAHAH I knew this would come up. That hose needs to come off. Plug the throttle body.I would recommend running the hose from the oil fill tube to the inlet on the blower. You will be blowing oil out your dipstick if you dont. Another thing is get a turbo coupe PCV valve, they have been tested to hold 20PSI. Stock fox ones are only good to about 1 psi. I would also recommend an oil catcher on the line going to the inlet of the blower. There is no real vacuum there but you will not be venting to the atmosphere. Thats the only benefit. The pvc does need to be changed though, thats for sure. No other way around it.

**92306gt** · 05-25-2008, 08:10 PM

Originally Posted by wick

HAHAHAH I knew this would come up. That hose needs to come off. Plug the throttle body.I would recommend running the hose from the oil fill tube to the inlet on the blower. You will be blowing oil out your dipstick if you dont. Another thing is get a turbo coupe PCV valve, they have been tested to hold 20PSI. Stock fox ones are only good to about 1 psi. I would also recommend an oil catcher on the line going to the inlet of the blower. There is no real vacuum there but you will not be venting to the atmosphere. Thats the only benefit. The pvc does need to be changed though, thats for sure. No other way around it.

anyone have one ??

**wick** · 05-25-2008, 09:18 PM

Originally Posted by 92306gt

anyone have one ??

Advance...

**92306gt** · 05-25-2008, 09:25 PM

as far as the vac line goes, should i put it in between the maf and blower?

**Martin0660** · 05-25-2008, 09:37 PM

Originally Posted by wick

Another thing is get a turbo coupe PCV valve, they have been tested to hold 20PSI.

They will hold a lot more than that ;) You must however get a Motorcraft one. The parts store stuff will leak under boost. The right Motorcraft part will hold 30+ #'s of boost.

Bob Myers

**wick** · 05-25-2008, 10:43 PM

Originally Posted by 92306gt

as far as the vac line goes, should i put it in between the maf and blower?

The minimal ammount that it will draw will not hurt anything. Actually, if you think about it, it is air that has already been metered.

**wick** · 05-25-2008, 10:44 PM

Originally Posted by Martin0660

They will hold a lot more than that ;) You must however get a Motorcraft one. The parts store stuff will leak under boost. The right Motorcraft part will hold 30+ #'s of boost.

Bob Myers

Oh yeah? Any ideas on which one to get? I have a few motorcraft ones here. One on the car now also.