201 replies to this topic

[CHILL Gone DUTCH]

Do you think the other end is vented to atmosphere

[techieboy]

I'd run it to a decent catch tank and then from there to the inlet pipework

[techieboy]

Could always connect it to your vacuum pump. That'll make sure there's no excess nasty gases in the engine.

[smiley]

Some info on how the PCV works for those interested.

 

 

[CHILL Gone DUTCH]

Excuse the rough drawing but would this work

 

[CHILL Gone DUTCH]

so oil drains back in to cam cover

[fezzasus]

Remember the only reason the PCV plums into the inlet is to get filtered air. If you want to ensure you do not contaminate the laminovas then use a separate breather filter.

[CHILL Gone DUTCH]

I'm more concerned about getting rid of crank pressure especially under high RPM So was hoping this would happen in my illustration but if oil passed up it would drain to the cam cover

[FLD]

The build book says to weld a bigger fitting to the cam cover.  Fine on an alloy one but not possible on a placcy one.  Would it be possible to add a hose fitting to the inlet manifold and run this to a catch can?  You'd probably need to disable the PCV system in the manifold.  On drag cars there's often a valve in the exhaust which takes away crank case gasses.  Not one for use pre-cat though. 

 

Total seal rings really lower crank case pressure on high boosted turbo LS1's, should work on a whizz pop 4 banger too.

[FLD]

Exhaust valve thing.

[cicastol]

 

This is my  setup for breather, 90°  AN-12 barb for 3/4 hose  in place of the head timing cover plug, both the cam cover hose and this 3/4 hose goes to an oil catch can and then out of the catch can another 3/4 hose to a little filter placed on the undertray.

 

With this setup the engine is free breathing, no more blow-by pressure build up is allowed.

 

 

Edited by cicastol, 12 April 2014 - 04:37 PM.

[CHILL Gone DUTCH]

 
This is my  setup for breather, 90°  AN-12 barb for 3/4 hose  in place of the head timing cover plug, both the cam cover hose and this 3/4 hose goes to an oil catch can and then out of the catch can another 3/4 hose to a little filter placed on the undertray.
 
With this setup the engine is free breathing, no more blow-by pressure build up is allowed.
 
 

I like this kind of idea

[CHILL Gone DUTCH]

Do you get much in the catch tank

[cicastol]

I 've made this mod only 1 month ago, since then no oil in the catch can, i think need longer time  to build up some oil ....

 

The plug thread is a standard setrab oil cooler type, M22x1,5, so  is plenty all around of adapter M22x1,5 to AN-12 to get the oily crap out!

 

:-)

 

 

[techieboy]

Great idea.

[techieboy]

Exhaust valve thing.

 

So, using the cam driven vacuum pump wasn't so off the wall then.

[CHILL Gone DUTCH]

Exhaust valve thing.

  So, using the cam driven vacuum pump wasn't so off the wall then.

If I used the brake vacuum pump how would I catch the oil Is it possible to fit something to drop oil but continue the vacuum Do you remember the things you used to suck up bugs at school, where the bugs drop into a canister and you don't swallow the bug ??

Edited by CHILL Gone DUTCH, 12 April 2014 - 07:27 PM.

[fezzasus]

 

 

Exhaust valve thing.

  So, using the cam driven vacuum pump wasn't so off the wall then.

If I used the brake vacuum pump how would I catch the oil Is it possible to fit something to drop oil but continue the vacuum Do you remember the things you used to suck up bugs at school, where the bugs drop into a canister and you don't swallow the bug ??

 

 

Oil catch tank. As long as it can be sealed it will deposit the oil into the tank but maintain vacuum.

 

HOWEVER. I'm not sure its a good idea. What happens when the crank pressure is greater than the vacuum? 

[Exmantaa]

Not so sure on using exta vent holes, as they bypass the stock air/oil separation system in the cam cover.

 

I would go stock PCV system to preserve oil quality, but integrate a good oil seperator in the cam vent tube to the air intake pipe. Possible with a drain back to the sump.

In the US they modify the stock system on the newer (A20NHT) DI engines like this, as these are very phrone to coking-up the intake valve due to oil mist intake. (No cleaning of valves on DI engines...)

[haggi961]

I've seen someone who drilled an oil filler cap to put a wider bore vent in there. Might be the best option to test if it works.

I've got a vented filler cap from the States in the garage. I had a look when I first got it and don't think it will fit with the standard engine cover, once the AN hose and fittings are connected up as it's so tall - obviously not a problem on the Cobalt and the multitude of Chevy cars that the cap appears

Have you got a picture of the filler cap and are you looking to sell it?