Catch can for paxton sc?

gtman

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Is it a good option to add an oil separator for a paxton supercharger kit?
Tech at paxton said if I added to keep the pcv valve in line. I wanted to get some opinions from s197.
I would attempt to keep the jlt hardline from the left of the can stock and modify the right side with .5" hose to the pcv.

Anything wrong with this idea or setup? This is for a 3v 06 gt.

Thanks
 

irishpwr46

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im running one on the driver side of mine. havent checked it since i installed it, but its only been about 500 miles
 

gtman

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im running one on the driver side of mine. havent checked it since i installed it, but its only been about 500 miles

In line pcv also? Im still trying to decide if i should run the separator with the .25" or so of hose to the right side after the pcv or to a more open area.

I did a search and couldnt find many owners with the paxton/vortech 05-06 coolant crossover tube and catch can.
 

Five Oh Brian

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I installed an oil separator on my Vortech supercharged '07 GT with good results. I left the PCV in line as shown in my pics below.....





 

702GT

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I installed an oil separator on my Vortech supercharged '07 GT with good results. I left the PCV in line as shown in my pics below.....





What is your P/S valve cover doing? IMO best routing on a centri is breather on P/S, D/S to separator, separator to blower intake tube. This creates a constant vacuum on the crank case while constantly pulling fresh air through the P/S breather.
 

gtman

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What is your P/S valve cover doing? IMO best routing on a centri is breather on P/S, D/S to separator, separator to blower intake tube. This creates a constant vacuum on the crank case while constantly pulling fresh air through the P/S breather.

Interesting, I never thought about that. I'm just trying to get my junk to work. I probably would have been better off just keeping the pcv setup with the Paxton.
The fit is tight as hell and the hose on the right and left of jlt can in line is very small. Hope this doesn't cause any problems.
 

702GT

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Going from larger to smaller increase velocity and decreases volume. It will still work just fine.
 

TheKurgan

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I have no PCV valve. The manifold is blocked off. I run breather on driver's side and catch can on passenger. The exit tube on the catch can just goes down under the car, but I get no leakage at all. The catch can catches what little comes out.
 

Riptide

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Brian is that a conceptual polymer can? I had one on my 2006 car and liked it quite a bit. Quality piece.
 

Five Oh Brian

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I have no PCV valve. The manifold is blocked off. I run breather on driver's side and catch can on passenger. The exit tube on the catch can just goes down under the car, but I get no leakage at all. The catch can catches what little comes out.

If you aren't getting any leakage out the exit tube and barely anything in the catch can, I can't help but wonder if this setup is working as well as it could. The setup I had was just the driver's side to the catch can and nothing on the passenger's side. My catch can was collecting all kinds of nasty oily vapor junk, so I think that means it was doing a great job of getting that stuff out of the intake stream.
 

MassMustang

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I installed an oil separator on my Vortech supercharged '07 GT with good results. I left the PCV in line as shown in my pics below.....




I'm wondering if I have my catch can setup properly. I have the two lines reversed on mine (though I don't think THAT makes a difference) and I don't have the PCV that Brian notes in the second pic.

Are we also saying the setup should be different if you install a Paxton/Vortech blower?

Also, I'm wondering if there's value to adding a catch can to the passenger side as well.
 
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07 Boss

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What is your P/S valve cover doing? IMO best routing on a centri is breather on P/S, D/S to separator, separator to blower intake tube. This creates a constant vacuum on the crank case while constantly pulling fresh air through the P/S breather.

If you run a breather on the passenger side you need to run a breather on the drivers side. If you are drawing in air through the passenger side it is unmetered. The air flowing into you PCV system should be drawn from the intake tube after the MAF. And if you still have a pcv valve in there you are you are only sucking air when there is a vacuum present. When there is no vacuum the crankcase will vent out the passenger side. Do you have the drivers side routed to the manifold after the TB?
 
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07 Boss

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I have no PCV valve. The manifold is blocked off. I run breather on driver's side and catch can on passenger. The exit tube on the catch can just goes down under the car, but I get no leakage at all. The catch can catches what little comes out.

Why do you even run a catch can? And then why don't you run one on both sides?
 

BruceH

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The 3v is designed to draw air in from the passenger side and vent the crankcase through the driver side. This is why a catch can isn't needed on the passenger side. FYI there is a pcv in the valve cover. Running the one Paxton supplies is insurance to keep boost out of the crankcase.

IMO it's fairly important to run a catch can with forced induction. If you have forced induction and run e85 it's pretty much mandatory. I've run a breather on the passenger side and had the driver side hooked up to the intake manifold. It ran just fine. The unmetered air must be a very small percentage of the total airflow going to the motor. I've run two blow through setups like that. One was a Paxton I converted to blow through and the other was a D1.

Procharger used to advocate a breather on the passenger side and pcv on the drivers side. They changed it to blocking off the intake manifold and running a breather on the passenger side a few years ago. I've tried it that way but all that happened was the motor pushed oil out the single passenger side breather and imo the motor didn't idle or run at low rpms as good as it did with the pcv hooked up.
 

07 Boss

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The 3v is designed to draw air in from the passenger side and vent the crankcase through the driver side. This is why a catch can isn't needed on the passenger side. FYI there is a pcv in the valve cover. Running the one Paxton supplies is insurance to keep boost out of the crankcase.

IMO it's fairly important to run a catch can with forced induction. If you have forced induction and run e85 it's pretty much mandatory. I've run a breather on the passenger side and had the driver side hooked up to the intake manifold. It ran just fine. The unmetered air must be a very small percentage of the total airflow going to the motor. I've run two blow through setups like that. One was a Paxton I converted to blow through and the other was a D1.

Procharger used to advocate a breather on the passenger side and pcv on the drivers side. They changed it to blocking off the intake manifold and running a breather on the passenger side a few years ago. I've tried it that way but all that happened was the motor pushed oil out the single passenger side breather and imo the motor didn't idle or run at low rpms as good as it did with the pcv hooked up.


Oh I understand how the system works, or is supposed to work, I'm just questioning the why folks have it set up certain ways because it doesn't make a lot of sense.

But my point is why would you put a breather on the passenger side if you are leaving the other side of the PCV system hooked up to the manifold/vacuum? Why wouldn't you just leave the passenger side to draw in air from the intake tube? I would think it would act like a huge vacuum leak.

And in Kurgan's set up with no PCV valve and the manifold pluigged, what is the purpose of the catch can on the drivers side? At that point both sides of the motor will vent exactly the same. That is why I am questioning the need for a catch can on the drivers side but not on the passenger side. Or at all for that matter. His motor will vent whenever there is any blow by or pressure inside of there and will exit both sides of the motor.

I guess I'm just wondering why you wouldn't go all breathers, or keep the closed system using the manifold vacuum. It just makes no sense to do it half and half. Maybe there is something in the way the centris are plumbed that I'm not grasping here, but TheKurgan's set up baffles me.

As you can see I run a 3 breather set up with the PCV valve removed from the inside of the cover.

 

BruceH

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Oh I understand how the system works, or is supposed to work, I'm just questioning the why folks have it set up certain ways because it doesn't make a lot of sense.

But my point is why would you put a breather on the passenger side if you are leaving the other side of the PCV system hooked up to the manifold/vacuum? Why wouldn't you just leave the passenger side to draw in air from the intake tube? I would think it would act like a huge vacuum leak.

And in Kurgan's set up with no PCV valve and the manifold pluigged, what is the purpose of the catch can on the drivers side? At that point both sides of the motor will vent exactly the same. That is why I am questioning the need for a catch can on the drivers side but not on the passenger side. Or at all for that matter. His motor will vent whenever there is any blow by or pressure inside of there and will exit both sides of the motor.

I guess I'm just wondering why you wouldn't go all breathers, or keep the closed system using the manifold vacuum. It just makes no sense to do it half and half. Maybe there is something in the way the centris are plumbed that I'm not grasping here, but TheKurgan's set up baffles me.

As you can see I run a 3 breather set up with the PCV valve removed from the inside of the cover.



Because on a blow through you can't leave it hooked up. That's the only reason I put a breather on it.
 

MassMustang

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So for a standard centri setup, a catch can on the ds and just leave the stock setup on the ps, or get a breather for the ps? Either war, no need for two catch cans, correct?
 

Waakeeen

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Not sure if anyone is looking at this thread but I wanted to get some validation that I have my engine venting correct. As you can see I have an Anderson power pipe replacing the stock vortech intake so I didn’t want to drill a hole in it so I welded a tube to the intake to connect to the catch can. Also I installed a big red BOV and relocated the MAF after the BOV. I’m noticing now that I’m not catching oil like before so I’m wondering if I should tap the Power pipe and seal the other hole to match the stock vortech piece. Let me know what y’all think, thanks! F20B2DFA-78A0-4651-9598-C30363D039EE.jpeg
 

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