Testing Air Oil seperators

[JimiJak]

Why does the EB only evacuate only under low and no boost?    The 6.0 intake for the CCV is right before the turbo. So you always have vac on the CCV system.  That way you have more vac under heavy boost when it is needed/

According to Ford, that info is inaccurate.

It does evacuate under boost and routs the vapors through the crankcase into the LH turbo inlet.

The LH turbo inlet (which in our txverse mount should be the rear side)?? The PCV line doesn't go anywhere near the rear turbo. OEM setup; it goes directly into the IM.
The clean side is plumed into the front side intake pipe, just before the turbo...but that would only evac if the system were flowing backwards...
Regardless, even if it was plumbed into the rear turbo inlet, that would mean its next stop post-turbo would be the CAC...and that's bad.
Where did you read that??

let me rephrase this...under boost the PCV check valve shuts and crankcase vapor is routed through the fresh air tube into the LH turbo inlet.

Right...isn't that what I said?

[JimiJak]

bascially...If I'm reading what you're typing correctly. Ford has not only published an article that confirms the PCV system flowing in reverse under boost, but they mis-spoke and should have said RH turbo.

What you're describing is the rear PCV closing, and the pressure being evacuated through the front clean side inlet, and into the air intake piping where it then goes to the turbo, followed by the CAC.

[FoMoCoSHO]

Why does the EB only evacuate only under low and no boost?    The 6.0 intake for the CCV is right before the turbo. So you always have vac on the CCV system.  That way you have more vac under heavy boost when it is needed/

According to Ford, that info is inaccurate.

It does evacuate under boost and routs the vapors through the crankcase into the LH turbo inlet.

The LH turbo inlet (which in our txverse mount should be the rear side)?? The PCV line doesn't go anywhere near the rear turbo. OEM setup; it goes directly into the IM.
The clean side is plumed into the front side intake pipe, just before the turbo...but that would only evac if the system were flowing backwards...
Regardless, even if it was plumbed into the rear turbo inlet, that would mean its next stop post-turbo would be the CAC...and that's bad.
Where did you read that??

let me rephrase this...under boost the PCV check valve shuts and crankcase vapor is routed through the fresh air tube into the LH turbo inlet.

Right...isn't that what I said?

Yes, that is what is happening, the fresh air pipe is bidirectional

[FoMoCoSHO]

bascially...If I'm reading what you're typing correctly. Ford has not only published an article that confirms the PCV system flowing in reverse under boost, but they mis-spoke and should have said RH turbo.

What you're describing is the rear PCV closing, and the pressure being evacuated through the front clean side inlet, and into the air intake piping where it then goes to the turbo, followed by the CAC.

Correct.

[JimiJak]

Correct, this is what the Rx system fixes. It should turn the PCV system into a unidirectional system by increasing vacuum on the catch can, resulting in draw through the PCV valve 100% of the time, rather than only in non-boost.

[JimiJak]

Ha, you ninja'd me. Snuck a reply in there before I was finished typing. LOL

[FoMoCoSHO]

Correct, this is what the Rx system fixes. It should turn the PCV system into a unidirectional system by increasing vacuum on the catch can, resulting in draw through the PCV valve 100% of the time, rather than only in non-boost.

So have we found oil in the fresh air tube?

[JimiJak]

When I installed my Rx sys, I had oil in both front and rear lines already...after just 1,700 total miles on the XSport since it left the factory.

[JimiJak]

I have four big questions for TunerBoost: Or anyone else able to provide accurate information

1. Is the rear PCV valve just a check valve, or is it mechanical? What causes this valve to "close" while under boost? How does the additional vacuum supplied by the intake pipe lines on the Rx system, re-open the closed PCV valve?

2. Why not install a check valve in the clean side line to prevent ALL backflow into the CAC?

3. Would re-routing the catch can to a location in front of the radiator be beneficial due to increased condensation, or detrimental due to decreased flow caused by too much hose distance?

4. Is there a way to proved true positive pressure through the clean side rather than just minimal vacuum, and would that be beneficial?

[FoMoCoSHO]

When I installed my Rx sys, I had oil in both front and rear lines already...after just 1,700 total miles on the XSport since it left the factory.

What's the issue with oil in the rear line?

Isn't it supposed to go through the separator?

[JimiJak]

When I installed my Rx sys, I had oil in both front and rear lines already...after just 1,700 total miles on the XSport since it left the factory.

What's the issue with oil in the rear line?

Isn't it supposed to go through the separator?

Let me rephrase -
while I was installing the rx system; I took off the OEM lines, and both of them had oil in them already.

To answer your second question; the separator is there to catch any oil that comes in contact with the front PCV port. This isn't supposed to act like a filter, but to serve as a last ditch method of protection while flow is momentarily reversed during transitions between boost and non-boost. once the transition is complete, the flow should continue in the correct direction, which is:

air intake --> front intake pipe --> barb fitting --> clean side separator --> front valve cover --> crankcase --> rear valve cover --> PCV valve --> Catch Can --> then the return flow is split between the IM vacuum barb and the front AND rear intake pipes where it re-enters the system.

[FoMoCoSHO]

When I installed my Rx sys, I had oil in both front and rear lines already...after just 1,700 total miles on the XSport since it left the factory.

What's the issue with oil in the rear line?

Isn't it supposed to go through the separator?

Let me rephrase -
while I was installing the rx system; I took off the OEM lines, and both of them had oil in them already.

To answer your second question; the separator is there to catch any oil that comes in contact with the front PCV port. This isn't supposed to act like a filter, but to serve as a last ditch method of protection while flow is momentarily reversed during transitions between boost and non-boost. once the transition is complete, the flow should continue in the correct direction, which is:

air intake --> front intake pipe --> barb fitting --> clean side separator --> front valve cover --> crankcase --> rear valve cover --> PCV valve --> Catch Can --> then the return flow is split between the IM vacuum barb and the front AND rear intake pipes where it re-enters the system.

The oil separator "impactor plate" is active during all no boost conditions, not just transitions. It is just a plate that droplets collect on and drop back into the crankcase

Intake>fresh air tube> front valve cover>crankcase>Rear valve cover>separator>"impactor plate>pcv valve>"pcv orifice"

Sorry, I'm not trying to be an ass, I'm just trying to reconcile the different terminology with the animation I am watching about the GTDI PVC system.

It has given me one helluva headache.

[ShoBoat]

I am Liking the gauge in this guys setup. It would be cool to read the vacuum under different conditions. Would be easy to checkout using a gopro or similar.

http://m.youtube.com/watch?v=znxsJzvpWcE

Another interesting install

http://m.youtube.com/watch?v=AT2w-ejVE14

[JimiJak]

I am Liking the gauge in this guys setup. It would be cool to read the vacuum under different conditions. Would be easy to checkout using a gopro or similar.

http://m.youtube.com/watch?v=znxsJzvpWcE

Another interesting install

http://m.youtube.com/watch?v=AT2w-ejVE14

I noticed on the eclipse install, when the engine was under load, the vacuum gauge quickly dropped to zero...thoughts?

[ShoBoat]

I am guessing it's a boosted car, that would be reason that the vac dropped to 0. It's hard to tell from the vid, it is normal for a NA engine when you open the TB like that for it to drop for a second before it recovers the vacuum. Unless it was under load it's kind hard to get an accurate read on the vacuum doing what he did in the vid.


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