PCV Catch Can Question?

Daryl LBZ · August 28, 2013

Ok for me, and anyone else that could use this information I need a little bit of help. I Installed my catch can over the weekend, but the way I ran the lines compared to the way others have ran them has me confused. I have the Mike Norris Unit, and I currently have the line that runs from the PCV Valve in the Intake Manifold into the fitting on top of the catch can lid. Then I have the line running from the fitting on the side of the catch can over to the valve cover. Is this the right way? Seems like everyones setup I look at has the lines running a different way. I'm looking for mine to be done the CORRECT way. Any help is appreciated. Thanks.

Chris · August 28, 2013

That sounds correct to me

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amc31b · August 28, 2013

No offense Daryl but the confusion is how you are wording what you are trying to explain. The 3rd sentence into your post says "I currently have the line that runs from the PCV Valve in the Intake Manifold into the fitting on top of the catch can lid". That statement makes no sense. Pics would also help us understand if you are not articulate enough to explain it but please understand, I am not making fun of you. I am just pointing out where the confusion is.

The PCV valve, (which is not a valve anymore, just an orafice) is the plug that you see on the rear driver side valve cover, NOT on the intake manifold. The plug that is located in the middle of the intake manifold, is where the PCV gasses enter the intake.

To explain it as simply as possible, connect your hose to the plastic tubing that comes from the plug on the rear driver's side valve cover into the top of the catch can. Then run a second hose from the side of the catch can up to the hose in front of the plug that you see in the middle of the intake manifold.

See my post here, post# 51 for some detailed pics.

http://www.gm-trucks.com/forums/topic/152695-jegs-pcv-oil-separator/page-4

BigBlueLB756 · August 28, 2013

Maybe my crappy photo will help. See the two hoses with screw clamps on them.

Daryl LBZ · August 28, 2013

No offense Daryl but the confusion is how you are wording what you are trying to explain. The 3rd sentence into your post says "I currently have the line that runs from the PCV Valve in the Intake Manifold into the fitting on top of the catch can lid". That statement makes no sense. Pics would also help us understand if you are not articulate enough to explain it but please understand, I am not making fun of you. I am just pointing out where the confusion is.

The PCV valve, (which is not a valve anymore, just an orafice) is the plug that you see on the rear driver side valve cover, NOT on the intake manifold. The plug that is located in the middle of the intake manifold, is where the PCV gasses enter the intake.

To explain it as simply as possible, connect your hose to the plastic tubing that comes from the plug on the rear driver's side valve cover into the top of the catch can. Then run a second hose from the side of the catch can up to the hose in front of the plug that you see in the middle of the intake manifold.

See my post here, post# 51 for some detailed pics.

http://www.gm-trucks.com/forums/topic/152695-jegs-pcv-oil-separator/page-4

Makes sense to me, but I'm not the best at explaining things to other people so let me see if I can clear it up some. As of now I have a line coming from the top of the can over to the intake manifold, and a line going from the side of the can over to the drivers side valve cover. They are the opposite of how yours are routed in the picture below.

Now, I did have mine routed exactly like your's are, but I swapped them to the way they are now because I read in the link below that it could be hard on the engine? Check out posts 51,52,53 in the link below.

http://www.camaro5.com/forums/showthread.php?t=284219&highlight=apex+chase&page=3

txab · August 28, 2013

Inlet air to top fitting from fixed orifice

Outlet air side fitting to intake manifold port

Your engine setup is different from what is being discussed in the thread you linked. No worries.

Daryl LBZ · August 28, 2013

Inlet air to top fitting from fixed orifice

Outlet air side fitting to intake manifold port

Your engine setup is different from what is being discussed in the thread you linked. No worries.

That's the only thing that had me second guess how I had it hooked up the first time which was the right way to begin with. I thought the setups might be different between the two engines, but I just wanted to make sure mine was right so I don't have any issues.

I have it routed back to the correct way now. Thanks for the help everyone.

amc31b · August 28, 2013

Glad you got it figured out. The way you had it before was definetly wrong. The Mike Norris unit gets high marks for collecting the oil well without restricting the flow of PCV gas. You are doing a good thing for the longevitiy of your engine.

Daryl LBZ · August 28, 2013

Glad you got it figured out. The way you had it before was definetly wrong. The Mike Norris unit gets high marks for collecting the oil well without restricting the flow of PCV gas. You are doing a good thing for the longevitiy of your engine.

Me too. Thanks for the help. I'm glad I got one on finally, and idk if it's because of the can or not, but my gas mileage has gone up slightly. Guess I'll see if it keeps improving.

amc31b · August 29, 2013

Great, keep us posted with your results! Now for internet forum law # 26, POST PICS OR IT DIDNT HAPPEN!

Daryl LBZ · August 29, 2013

Haha, here ya go...

amc31b · August 29, 2013

Nice! By the way, who thought up that ingenious mounting location for the catch can? Musta' been a really smart guy!

Oh wait a minute, it was me!

Daryl LBZ · August 29, 2013

Nice! By the way, who thought up that ingenious mounting location for the catch can? Musta' been a really smart guy!

Oh wait a minute, it was me!

Lol no argument here. It's a great location for easy access, and a clean look.

Doug_Scott · August 29, 2013

I think it would be easier to just label the lines with what they do. Suction and vent. Easy to tell which is which as well, just start the engine and see which one has vacuum, the other is the vent. Doing it this way makes it work for every vehicle out there, without any confusion.