PCV Line Routing/Oil Catch Can-C5 LS1

[bewelch]

I am installing a Conceptual Polymer Oil Separator. There is 1 pcv outlet on the drivers side valve cover and 2 outlets on the passenger side. The 1 on the drivers side is connected (Y connector) to the rear outlet on the passenger side then on to the PCV valve and into the throttle body. The front outlet on the passenger side is connected directly into the throttle body but not via the same port.

Is there a reason that this pcv outlet is routed directly to the throttle body and not thru the PCV valve?

Since I am trying to remove all oil from being recirculated back thru the induction, wouldn't it make sense to re-route the front outlet, via a Y connector, into the line going thru the PCV valve..........then to the oil catch can, then out to the 2 throttle body inlets (via a Y connector)?

[ToolGuy]

I can't comment on this myself, other then is not an issue for me or my car. IMO, any that gets by is considered normal and not hurting anything.

FWIW, have you seen this theard?

http://corvettemechanic.com/forum/20...-can-info.html (Catch Can Info)

[froggy47]

Originally Posted by bewelch

I am installing a Conceptual Polymer Oil Separator. There is 1 pcv outlet on the drivers side valve cover and 2 outlets on the passenger side. The 1 on the drivers side is connected (Y connector) to the rear outlet on the passenger side then on to the PCV valve and into the throttle body. The front outlet on the passenger side is connected directly into the throttle body but not via the same port.

Is there a reason that this pcv outlet is routed directly to the throttle body and not thru the PCV valve?
Since I am trying to remove all oil from being recirculated back thru the induction, wouldn't it make sense to re-route the front outlet, via a Y connector, into the line going thru the PCV valve..........then to the oil catch can, then out to the 2 throttle body inlets (via a Y connector)?

I have not done this on my ls6, I run it hard & never found excessive oil to be a problem at the intake, but I think the line in your post (I made it bold) is the clean air / fresh air line. It's a closed loop system & most of the after market cans adhere to the closed loop concept.

The pcv routing has been changed quite a lot over model years. I would contact the company who made yours and have them send you a diagram of the correct hose routings.

Having said that, I have read quite a lot about excess intake oil in the newer LS2/3/7 engines WHEN THEY ARE TRACKED. So much oil being deposited at the intake from pcv that it runs down the air intake and drips out the air cleaner onto the ground. Now that would get my attention & I would run a can to fix it, but the ls1/6 I have not seen it be an issue. Any of these engines with a "normal" drive cycle (which is 98% of them) really don't need cans.

:)

I see the company has you drilling & tapping holes in the frame of the car to mount the can, wow that's a lot of work just to mount a little catch can. The can seems on the small side & has some kind of filter in it so be aware if it clogs or get's full, you could be on the side of the road with a check engine light (not to be overly dramatic) but just be aware. Most of the guys I know run a bigger can & it does not have a filter, just metal mesh to help the vapors turn to liquids & stay in the can.

Best of luck.