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where to route the oil/air seperator lines

slayer

By slayer,
in Engines & Forced Induction

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slayer Collaborator

slayer

Posted
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Hi guys, fitting a oil/air seperator (the style with one input and one output, with baffled and steel wool filled internals between the two connections).

One question - It seems easy enough to pick up the PCV line from the top of the engine where both banks join into one, but where do I then plumb back to (the same return hose that was connected to the t-piece?), and where is the PCV valve?

Is it part of the t-piece, or further down near the turbo?

I dont want to stuff up the PCV system, just want to strip as much oil out as I can before it hits the intake.

Thanks

Conrad

Steve Grand Master

Steve

Posted
Posted

If you just tee into the hose that goes from the rocker cover to the inlet pipe before the turbo, you shoud be fine. I think the pcv Vv is at the rear of the rocker cover, with another Vv between the rocker cover and the plenum (front right hand side of the rocker cover) for ventilation whilst not on boost.

If you are having trouble with my expanation, I can put up some pics

Steve

slayer Collaborator

slayer

Posted
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Posted

If you could provide piccies thaty would be cool... at the moment I am thinking I pick up the connector which is the t-piece on the right rocker cover, and route through the oil/air seperator and back to where the t-piece connected to (the return line into the manifold).

I was wondering about that other line, the one from the left rocker cover to the manifold - wouldnt it be best to route that through a seperator too??

Thanks for your help

Conrad

Sil8ty Collaborator

Sil8ty

Posted
Posted

With my oil / air seperator, all i did was disconnect the two breathers from each rocker cover, and fitted them into the seperator, then ran a line from the opposite side of the seperator to where the original breather lines go into the intake near the turbo.. I have had it on nearly a year with next to no blow-by in the inlet runner..

blind_elk Grand Master

blind_elk

Posted
Posted

The PCV valve should be in the inlet plenum. Follow the hose up from the RH rocker.

If 33s are anything like 32s, then the 2 rockers should be connected by a 'U' of rubber hose. All you need to do is remove the small hose that runs from the LH rocker (passenger side) to the inlet near the turbo, and replace it with the separator and its 2 hoses.

So instead of:

PCV - RH rocker - LH rocker - turbo inlet

you will have:

PCV - RH rocker - LH rocker - separator - turbo inlet

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