Originally Posted by EODMustang

@cliffyk: The PCV valve is on top of the driver's side valve cover. It has a hose running from it, across the top of the engine, that is connected to the inlet tube, after the MAF and before the compressor.

Originally Posted by cliffyk

Unless things were greatly re-configured for your blower, the PCV valve should be on the passenger's side cam cover, connected by a vacuum hose to the rear of the upper plenum--what you describe is the PCV fresh air intake plumbing.

Originally Posted by EODMustang

Yeah, that's what I'm talking about. My idea is to put a rebreather on top of the valve cover where the hose comes out of, then block off the inlet tube between the MAF and the blower so not to draw unmetered air. This will prevent the uptake of oil and carbon that I'm getting in the cold side of my turbo system. The only thing I'm worried about is if the rebreather is going to allow the gases to be scavenged off the top of the head, without the vacuum there anymore.

Originally Posted by cliffyk

It will, only to a very small extent--0.1% as well as the PCV system.

However if you almost always make long enough trips that the engine runs at full temperature for 15 to 20 minutes (actually runs, under some load, not idling); and do not idle the engine for long periods; and most importantly change the oil often (which should be done with a turbo anyway) you will be OK

Originally Posted by 1998Slow 'Stang

Thanks for answering my questions Cliff!

I realize that it has no negative impact on performance, as that is not my reason for asking those questions.

When I preformed my motor swap a couple days ago I used the 96-98 cobra style cam covers which don't like the 97 lincoln intake tube routing so much, so I put a plug in the pcv hole on the pass. side and tryed just running the PCV valve that is in the drivers cam cover.

This was causing me to pull vacuum in the crankcase that was not escaping until I pulled the dipstick out some to relieve the suction.

So, in the interest of prolonging the life of the engine I will track down at least one COP cam cover.

Also, are valve cover gaskets reusable? (I know that sounds dumb, but if I can be cheap I'm going to)

Originally Posted by cliffyk

^-yup...

To be 100% clear you should have a breather on both cam covers if you remove the PCV valve. Though the atmosphere's of the cam/valve train areas in both heads are "connected", it is only through the crankcase that any transfer of blow-by and other nastiness can occur--so make sure both cam covers have breathers.

BTW, you will find that those breathers will load up with oil and other crap and need to be cleaned regularly--if not the smelliest, stickiest and nastiest crap you ever saw will leak out and run down the cam covers...