EDIT: upon closer inspection the one i took out (the stock one) doesnt do its job very well....like the hole is round and the little metal piece is square so there are holes that would allow oil to come up still

Now you are on it. The OEM valve does not seal off the crankcase. It is a "controlled" leak whether under vacuum or boost.

Dan

 

So why would Ford go with this design if they already had a better-working unit in its parts bin???

also Dan, just curious what "kit" you're running to fix this...

 

cyntaxx

Dose the new PVC work. I want to do the same spend $5 instead of $30.

 

Obvoiusly some people don't actually have the problem. If you did $25 is a great deal.

I will be able to tell you without a doubt if this prevents or helps reduce the oil problem or not.

tallan66,
Just one question, do I leave the breather on or not? Does it matter?

Thanks,
Kurt

 

I'll check in a week and let you all know. i've been racking up some miles with this great weather and will be doing another 10 hr + roundtrip drive to Rockford this weekend so I'll definitely find out if it at least *helps*...

i think for 5 bucks i couldn't hurt and the install i could've done drunk and blind with my feet.

 

It's not(IMO) a 'bad design'. They used this particular PCV valve for a reason. We(I) just d/k what their reasoning was. Our OEM valve is purposely 'non-sealing' in either vacuum or boost situations.

I have tried almost everything to get rid of my unwanted, intake-area oil from two (REM & Condensator) seperators, ball bearing blocking the PCV valve, and breathers on both or one cam cover(s).

I currently(about 1,800 miles) am using the Danny Swanson kit which is 'invisible' and, so far, effective.

Dan

 

do you think the dime-sized plate makes a difference or will the different valve suffice?

 

Like I said. It's still ugly and it still works.




The Swanson kit eliminates the source of high volume vacuum, by blocking the port into the intake plenum. It then relies on the small hose at the rear of the intake manifold to clear the combustion gasses from the crankcase.

This is very similar to a standard PCV system. It quicken's boost response for the same reason. You you no longer have boost leaving the intake manifold, and being vacuumed through the blower again (the vacuum source is now blocked). The new PCV valve should shut off when it sees boost from the intake, eliminating the other potential source of boost leakage.

Under boost, the blowby gasses now rely on the low vacuum source in front of the throttle body to clean out the combustion gasses. Not as efficient, but it looks like it will work.

You will still get some oil sucked out of the passenger side valve cover under vacuum conditions. You will no longer see it in the intake boot, as it is now being depoisted into the intake manifold under the IC. The volume shouldbe MUCH less, as that line has a built in restrictor.

The real solution would be to go to baffled valve covers, to limit the oil splash off the valvertain, directly onto the PCV valve.

 

"You will still get some oil sucked out of the passenger side valve cover under vacuum conditions. You will no longer see it in the intake boot, as it is now being depoisted into the intake manifold under the IC. The volume shouldbe MUCH less, as that line has a built in restrictor."

Jay: It would be interesting if someone(young and quick--not me ) would clean their lower intake(and, of course, the boot, etc.), install the DS kit, run their L for XXX miles, and then remove the lower intake and see how much oil actually gets back in there.

Dan

 

If you really want to get crazy, just install the Swanson kit and an oil seperator inline between the pcv valve and the lower intake. Then you would see if any oil is still going into the lower intake. Skip

 

I'll volunteer my truck for the cleaning if someone wants to come over

 

Skip, you and I think alike.

I've had this PCV valve for a while now. I was going to block off the port into the upper plenum, and run the other line through the seprator. I'm betting it really won't collect much oil. The restrictorin that line is about 1/16" dia..

I think Phil is pretty good at removing blowers. He has the Works 140 .

 

this talk about putting a restrictor plate on and all doesnt sound worth it

i used to race a rail and we got 30 hp from just putting on a vacum pump

 

HSlightnin, I run a vacuum pump on a few of my high perf. street engines. I've never dyno'd one with the pump, but it sure helps ring seal on thin rings.

 

ya we just had a prob with oil comin out of every gasket it solved that as well