Air oil separator

Lcperformance

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I am new to this forum and I want to install an air oil separator on my 05 Mustang 4.6 with a procharger my question is I want to use a 3 port separator can I plumb both inlets on the aos from each of the valve covers and then go back into the plenum. Where I love I have to be emissions compliant. Thanks in advance
 

06 T-RED S/C GT

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If you haven't searched the sub-forums on this site? it's highly recommended that you do so, as you'll find plenty of threads which address this topic that have been brought up many times in the past. Chances are, you'll find all the answers to your questions by just doing a thread search.
 

06 T-RED S/C GT

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Just giving you a heads up, as the mods of this forum will also do the same. Just go to search forums at the upper left hand corner, next to mark forums read and watched forums and type in oil separator or catch can. I assure you that you will not come up empty.


WTB: Bob's Catch Can / Oil Separator
Looking for a Bob's Catch Can / Oil Separator. Preferably in gloss black with the longer mounting bracket. PM me if you have one you're looking to...
Thread by: Brick, Nov 26, 2018, 2 replies, in forum: WTB Items and/or Parts


Best brand oil catch can
I've had 3 different oil separators/catch cans. First was the JLT, which despite traping small amounts of crankcase oil, it did not, however,...
Post by: 06 T-RED S/C GT, Mar 4, 2019 in forum: Mustang Chit Chat

What type of oil separator for R2300 supercharger
...from roush. I bought it used and realize it doesn't have a oil separator. It's my daily driver and want it to last and no matter what I google...
Thread by: Leroy_jenkinz, Jun 15, 2016, 11 replies, in forum: Mustang Chit Chat


What have you done to your mustang today?
...overkill and unnecessary. I run just a single UPR 4 chamber oil separator on the driver's side of my boosted "06" 3 valve. Needless to say,...
Post by: 06 T-RED S/C GT, Feb 1, 2019 in forum: Mustang Chit Chat


Oil seperators and/or breathers on your boosted 3V's?
...and I'm trying to come up with a clean way of routing an oil separator on each side, or just vent them. From my limited understanding, just...
Post by: Black Bullitt, Jul 25, 2016 in forum: Mustang Chit Chat



Please help educate me; ProCharger and oil catch can questions...
...Stage 2 installed. I was running a passenger side JLT oil separator when I was NA, but the ProCharger install requires the passenger side PCV...
Post by: GLOCKer, Dec 7, 2016 in forum: 2011+ Mustang GT 5.0L Tech


Oil Catch Can/separator
Hey, guys. I did some searching but didn't come up with the answer. I hope this isn't a repeat! How critical is the oil catch can on early 5.4L...
Thread by: mrgtx, Dec 1, 2015, 15 replies, in forum: Mustang Chit Chat


Black Gold, Texas Tea I think NOT! Ideas welcome?
I used to run two JLT separators inline one after the other. The second one caught almost as much oil as the first, which tells me they are less...
Post by: skwerl, Nov 27, 2017 in forum: Mustang Chit Chat


That's just some of the threads found by using the search forums, as mentioned above.




https://www.s197forum.com/threads/what-type-of-oil-separator-for-r2300-supercharger.128715/
 

07 Boss

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I am new to this forum and I want to install an air oil separator on my 05 Mustang 4.6 with a procharger my question is I want to use a 3 port separator can I plumb both inlets on the aos from each of the valve covers and then go back into the plenum. Where I love I have to be emissions compliant. Thanks in advance

No. Well yes you can but it won't work that way.
 

08MustangDude

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First off, you won't get any blow-by from the driver side valve
cover. It only comes from the Passenger side. You do not need
a three-way for that. All you will need is one on the passenger
side. If you must, use a separate one on the driver side, but it
will never get oil in it.

cc_r0010.jpg

These are $25.00 or so on eBay. The breather opening will be capped, so it stays that way.
They come ins Red, Blue, black, Silver. I got a red one and a black one. Black is is the oil
catch, RED is the trans vent.

Oil Catch:
cc_r1310.jpg

I bought some AN10 line for eBay, 3 feet to be sure I had enough...

5R55S Trans Vent
img_2030.jpg
 

Badd GT

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First off, you won't get any blow-by from the driver side valve
cover. It only comes from the Passenger side. You do not need
a three-way for that. All you will need is one on the passenger
side. If you must, use a separate one on the driver side, but it
will never get oil in it.

cc_r0010.jpg

These are $25.00 or so on eBay. The breather opening will be capped, so it stays that way.
They come ins Red, Blue, black, Silver. I got a red one and a black one. Black is is the oil
catch, RED is the trans vent.

Oil Catch:
cc_r1310.jpg

I bought some AN10 line for eBay, 3 feet to be sure I had enough...

5R55S Trans Vent
img_2030.jpg
PCV valve on 4.63v is in the driver side valve cover. You have it backwards
 

SVT Rider

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Correct. The driver's side PCV will discharge much more than the passenger side on the 3V. You are thinking of the Coyote 5.0L engine where the passenger side valve cover is the primary PCV.

Either way, they say that both should be sent to a Oil Separator when supercharged, which is what the OP asked about.

OP,
The 3 port AOS is likely not ideal. One of the PCVs on the valve covers is valved which requires vacuum to open, and I would be concerned the non-valved side would reduce the amount of vacuum available to open the one side. I have always seen one for the driver's and one for the passenger's side.
 

06 T-RED S/C GT

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Correct. The driver's side PCV will discharge much more than the passenger side on the 3V. You are thinking of the Coyote 5.0L engine where the passenger side valve cover is the primary PCV.

Either way, they say that both should be sent to a Oil Separator when supercharged, which is what the OP asked about.

OP,
The 3 port AOS is likely not ideal. One of the PCVs on the valve covers is valved which requires vacuum to open, and I would be concerned the non-valved side would reduce the amount of vacuum available to open the one side. I have always seen one for the driver's and one for the passenger's side.
The passenger side valve cover on the 3V does not have an active PCV valve at all, as it's non-valved. Only the driver's side cover has a functional PCV valve that requires vacuum to open. Therefore even when supercharged, all that is required is just a single oil separator/catch can installed from the driver's side valve cover to the intake manifold that also includes an inline one-way check valve. However, if the oil separator/catch can does not include an inline one-way check valve? I'd then recommend running oil separators on both driver and passenger side valve covers when supercharged for additional piece of mind. Other than that, just as you posted, 08MustangDude is thinking of the Coyote 5.0L 4v engine where the passenger side valve cover has the active PCV valve just as the 5.4L 4v 2007-12 Shelby GT500 has as well!
 
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Dino Dino Bambino

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First off, you won't get any blow-by from the driver side valve
cover. It only comes from the Passenger side.

That's correct for your 4.0L V6 but it's the reverse on the 4.6L V8. On the latter, the PCV valve is inside the driver's side valve cover. On a positive displacement FI set up, a pair of two port eBay catch cans like the ones I have on both sides would do fine. On the driver's side, you can add a one-way check valve between the intake manifold and the outlet side of the catch can so that vapors only flow towards the manifold when there's vacuum, and there's no retrograde flow when there's boost.
With a centrifugal supercharger or turbo FI system, the PCV set up has to be altered from the above. Essentially you'd need a breather instead of a catch can on the passenger side valve cover, and a breather on the outlet side of the driver's side catch can. This completely isolates the intake system from the crankcase. The intake manifold vacuum port would need to be capped to prevent a boost/vacuum leak. If you're using the stock intake manifold, it's also a good idea to delete the CMCVs.
 
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07 Boss

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First off, you won't get any blow-by from the driver side valve
cover. It only comes from the Passenger side. You do not need
a three-way for that. All you will need is one on the passenger
side. If you must, use a separate one on the driver side, but it
will never get oil in it.


These are $25.00 or so on eBay. The breather opening will be capped, so it stays that way.
They come ins Red, Blue, black, Silver. I got a red one and a black one. Black is is the oil
catch, RED is the trans vent.


Uhhhh.... you know you have a completely different motor in your car. This is the 4.6 sub-section.
 

08MustangDude

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Oh well, I was told the same with 4.6 elsewhere... It is what it is...
 

06 T-RED S/C GT

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That's correct for your 4.0L V6 but it's the reverse on the 4.6L V8. On the latter, the PCV valve is inside the driver's side valve cover. On a positive displacement FI set up, a pair of two port eBay catch cans like the ones I have on both sides would do fine. On the driver's side, you can add a one-way check valve between the intake manifold and the outlet side of the catch can so that vapors only flow towards the manifold when there's vacuum, and there's no retrograde flow when there's boost.
With a centrifugal supercharger or turbo FI system, the PCV set up has to be altered from the above. Essentially you'd need a breather instead of a catch can on the passenger side valve cover, and a breather on the outlet side of the driver's side catch can. This completely isolates the intake system from the crankcase. The intake manifold vacuum port would need to be capped to prevent a boost/vacuum leak. If you're using the stock intake manifold, it's also a good idea to delete the CMCVs.
Can you post a pic of your pair of catch cans you have on both sides? I'm just curious to see how you have both sides routed.
 

06 T-RED S/C GT

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Sure. Keep in mind that my engine is N/A though. Pics are in the link below.

http://www.angelfire.com/my/fan/Mustang2006GT/Parts.html
I see by your images how you have the passenger side routed and is connected from the valve cover to the inlet side of the catch can and then from the outlet side of the catch can to the JLT air intake inlet tube attached to the throttle body, just as I thought. At any rate, I may decide down the road to add a 2nd catch can onto the passenger side if I should continue to notice any crankcase vapor oil inside of the air intake tube attached at the throttle body? I also have an inline one-way check valve between the intake manifold and outlet side of the driver's side catch can which is supposed to flow vapors towards the manifold only when there's vacuum. Therefore I'm assuming that no crankcase vapor oil should be entering the intake manifold from the passenger side valve cover whatsoever, correct?
 

Dino Dino Bambino

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Yup. As long as your engine doesn't have any piston ring blowby issue that would pressurize the crankcase, the passenger side catch can should remain empty with my set up and the throttle body should remain oil free.
 

06 T-RED S/C GT

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Yup. As long as your engine doesn't have any piston ring blow by issue that would pressurize the crankcase, the passenger side catch can should remain empty with my set up and the throttle body should remain oil free.
After reading over your post, it appears there may be a piston ring blowby issue then, as I have noticed a coating of crankcase vapor oil on the inside of the air intake tube directly at the throttle body section. Therefore, I have no idea as to whether its coming from the PCV driver's side which does have the inline one-way check valve connected between my driver's side catch can and intake manifold or if it's coming from the non-PCV passenger side valve cover? I also have a CFM billet oil cap breather that also includes a one-way check ball valve. So in your honest opinion, if the throttle body isn't 100% oil free, do you think it's coming from the passenger side valve cover due to a piston ring blow by issue?
 

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