Oil Catch Can, Rc Breather Or Pcv Line?

[***VX*R8***]

I've bought an oil catch can (non vented) for my g6et and want to know if I should be fitting it to the rocker cover breather or PCV line?

I'm trying to stop oil from getting into the cooler pipes,intake manifold and TB etc.

Thankyou

[bamk2f6tornado]

Breather line for no oil in pipes n cooler. Pretty sure pcv connects to the bottom of the intake manifold so shouldn't put oil in your cooler

[***VX*R8***]

Is it ok to hook the pcv up to the catch can and then use a t-piece to join the RC breather to the pcv lines, so that I don't need to run 2 catch cans?

[barnz]

No coz the pcv valve is like a check valve and holds boost so putting a T in it will create a leak. Should also move the valve to between the can and the manifold to prevent the can pressurising.

Pcv to manifold is the one to have a can on anyway. Most people with a can on the breather report it is always empty. If your blowing heaps of oil out the breather you got bigger problems then oil in your intake...I guess you could plumb it in before the can if you have a check valve after it but that's not how the pcv system is meant to work and all your doing there is creating a closed circuit, would kind of work when the manifold is in vacuum but still not the way it should work by emissions standards.

Edited 27/12/14 07:16 AM by barnz

[FiftyOne]

Most recirc is also designed to lube the valves & things in cars these days. I'm not a fan of removing it

[***VX*R8***]

So it'll be fine to just leave the pcv valve in the standard location and put the catch can in line between the pcv valve and the intake manifold?

And this won't have any negative effects?

I've seen people say they run a catch can off the breather and catch enough to make the catch can worthwhile. So I may even get another can to run off there but was hoping to be able to get away with one can.

I've run catch cans on ls1 and sr20 which were simple but this seems a little bit different.

[barnz]

The check valve should really be after the can to prevent is pressurising when the manifold is not in vacuum.

The whole pcv cct is for emissions not valve lubrication...burns off crank case gases rather then venting to atmosphere. Id much rather just have filters on the breathers than this sh*t in my manifold.

Everything on the other side of the throttle body is clean. So all that is crap sucked in via the pcv system.

Edited 28/12/14 07:05 AM by barnz

[***VX*R8***]

Mine gets oil in the cooler pipes too.

Not excessive but I've heard many others say the same and I've personally seen it on 2 other fg xr6ts.

[ullysses]

Here's what I'm understanding.

Should be plumbed as follows.

PCV (original location on rc) - catch can - check valve - manifold

Is that correct?

Kinda struggling to get my head around it all.

[OZYWALKER]

^^

That's it.