960 replies to this topic

[Exmantaa]

You mean the pcv valve in the sc or turbo manifold?

 

Well that is indeed a real one-way valve to block the boost pressure, compared to the orifice hole of the Z22SE mani

Edited by Exmantaa, 26 January 2014 - 05:27 PM.

[CHILL Gone DUTCH]

Edited by CHILL Gone DUTCH, 26 January 2014 - 05:49 PM.

[oakmere]

Chill isn't the PCV the round hole above to the right not the big hole in the centre? So only slightly bigger than the z22se. The Saab inlet covers the large hole but has an approx 10mm hole.

[CHILL Gone DUTCH]

There is no hole on the z22se above to right

Edited by CHILL Gone DUTCH, 26 January 2014 - 06:12 PM.

[CHILL Gone DUTCH]

now that i will be opening up the PCV (way) because the round hole in first pic now lines up with the SC manifold will this clog my laminovas ??

[oakmere]

Sorry Chris I thought you were saying the PCV on the Saab head was the large rounded rectangle.

[smiley]

now that i will be opening up the PCV (way) because the round hole in first pic now lines up with the SC manifold will this clog my laminovas ??

 

You're one of the first in the UK with the holes lining up, and software to support a working PCV, so who knows.

Have not heared the germans about it so far though, who have the same setup's running. Then again most of these setup's

date from 2013, so may have not have had the manifold off to check yet.

 

I would still keep a catch tank in place on the rocker cover breather for a while and evaluate what's going on.

Maybe do close the system, by piping the catch tank return back into the air inlet. (no more smels) 

Edited by smiley, 26 January 2014 - 07:40 PM.

[CHILL Gone DUTCH]

i have just been venting from the cam cover to the rear of the car no catch tank, with the inlet orifice blocked 

 

what im more worried about is what is going back into the inlet manifold where previously it was blocked causing it to blow through cam cover, it will now opened work the other way round (if im understanding this right ) i will be sucking from cam cover and blowing into manifold.

 

OR HAVE I GOT THIS ALL WRONG 

[smiley]

It's a bit of a catch22, as we had excessive blowby because we closed the PCV on the Z22SE. Now that it's doing what it should be doing, the question is how much will still be spit out by the rocker cover vent. 

I have not heared about the PCV used as an outlet (and that PCV hole in the manoifold is not that big i believe) for oil.

Maybe exmantaa knows from the US forums.

 

[CHILL Gone DUTCH]

the problem with the z22se is that we took away the ability to get clean air in or reduced the vacuum to pull air in, now we are will there be more bad gasses or less

 

i think it depends on what loads you are driving at where the clean air comes from

Edited by CHILL Gone DUTCH, 26 January 2014 - 08:42 PM.

[techieboy]

A lot of the US LSJ boys block up the PCV entirely (like we've had for the last 10 years) and vent through the cam cover.

[CHILL Gone DUTCH]

A lot of the US LSJ boys block up the PCV entirely (like we've had for the last 10 years) and vent through the cam cover.

 

this is not good for your engine, and can cause higher build up of the toxic crank gasses which will eventually push past pistons with higher presure

[CHILL Gone DUTCH]

 

A lot of the US LSJ boys block up the PCV entirely (like we've had for the last 10 years) and vent through the cam cover.

 

this is not good for your engine, and can cause higher build up of the toxic crank gasses which will eventually push past pistons with higher presure

 

 

maybe its a compromise from engine health and cleaning laminovas once a year

[Exmantaa]

The head/manifold pcv route sucks crankcase gasses after the laminova's, so not much clogging. The other hose blows in front of your TB & SC, so fit a decent oil seperator in that hose. (Don't leave it open now, as the pvc then can suck in unfiltered air.

PCV has been discussed some time ago...

[techieboy]

 

A lot of the US LSJ boys block up the PCV entirely (like we've had for the last 10 years) and vent through the cam cover.

 

this is not good for your engine, and can cause higher build up of the toxic crank gasses which will eventually push past pistons with higher presure

 

 

It's not killed a UK conversion, yet. 

 

They block up the PCV hole with a squirt of sealant, then either use the standard valve cover vent or better yet, increase the size of it (and/or use a vented oil cap) and run it into a catch tank and either route the exit of that back into the inlet or to atmosphere. Sealed system being better.

[CHILL Gone DUTCH]

The head/manifold pcv route sucks crankcase gasses after the laminova's, so not much clogging. The other hose blows in front of your TB & SC, so fit a decent oil seperator in that hose. (Don't leave it open now, as the pvc then can suck in unfiltered air. PCV has been discussed some time ago...

Would it be sufficient to put a small filter on the cam cover vent rather than in front of TB

[Exmantaa]

 

 

A lot of the US LSJ boys block up the PCV entirely (like we've had for the last 10 years) and vent through the cam cover.

 

this is not good for your engine, and can cause higher build up of the toxic crank gasses which will eventually push past pistons with higher presure

 

 

It's not killed a UK conversion, yet. 

 

They block up the PCV hole with a squirt of sealant, then either use the standard valve cover vent or better yet, increase the size of it (and/or use a vented oil cap) and run it into a catch tank and either route the exit of that back into the inlet or to atmosphere. Sealed system being better.

 

 

Vented oil cap bypasses all the oil seperation steps in the cover, so not a very smart move...  

[Exmantaa]

 

The head/manifold pcv route sucks crankcase gasses after the laminova's, so not much clogging. The other hose blows in front of your TB & SC, so fit a decent oil seperator in that hose. (Don't leave it open now, as the pvc then can suck in unfiltered air. PCV has been discussed some time ago...

Would it be sufficient to put a small filter on the cam cover vent rather than in front of TB

 

 

Yes, but it should be good quality as it's a direct path into the crankcase, (but only when you have no MAF like the Z22SE ecu)  

Edited by Exmantaa, 26 January 2014 - 10:38 PM.

[fezzasus]

I'm running the Dutch software with a working pcv. While there's manifold pressure there shouldn't be any oil entering the laminovas as that is the inlet for fresh air, vapours are pulled through the usually blocked pcv port on the manifold, after the laminovas. No issue with running it so far. No nasty smells, reduced oil consumption.

[CHILL Gone DUTCH]

I'm running the Dutch software with a working pcv. While there's manifold pressure there shouldn't be any oil entering the laminovas as that is the inlet for fresh air, vapours are pulled through the usually blocked pcv port on the manifold, after the laminovas. No issue with running it so far. No nasty smells, reduced oil consumption.

Where have you connected the cam cover pipe to