4396 replies to this topic

[siztenboots]

I thought they did ,

 

http://www.saabcarpa...r-saab-9-3.html

[CHILL Gone DUTCH]

I thought they did ,   http://www.saabcarpa...r-saab-9-3.html

No already blocked up on the B207 engines From group buy

Edited by CHILL Gone DUTCH, 02 January 2015 - 04:04 PM.

[CHILL Gone DUTCH]

Here is a more complicated version with the oil draining back into sump and just the gassed going into exhaust but I'm guessing some oil would still get to exhaust
But not necessary you could just catch tank it or not even bother just let it escape into exhaust



The whole point of this is so we have a full functioning positive crankcase ventilation and stop the laminovas being blocked

Edited by CHILL Gone DUTCH, 02 January 2015 - 04:09 PM.

[CocoPops]

Won't that put it under vacuum conditions? Thus actively sucking out air/oil?

[CHILL Gone DUTCH]

Only under heavy load Which is what happens when it's connected to inlet

[vocky]

what about using sticky's method of connecting the oil filler cap to the PCV system ?

[FLD]

http://www.j-body.or...38&t=185338&p=1 http://www.j-body.or...186733&t=186733 Some links that may help. From what I've read the plastic inserts aren't great for high boosted motors and are usually damaged (melted) if the cover is powdercoated. The reason GM weld in a larger fitment is to slow the gas speed out of the breather. This lets the oil mist drop out. There are various other versions where people have fitted multiple breathers to the channels on in the rocker cover. Hope this helps.

[CHILL Gone DUTCH]

what about using sticky's method of connecting the oil filler cap to the PCV system ?

Wouldn't this bypass and have less resistance than original outlet and in effect bypass the separator and pull more oil out

[FLD]

It's not about resistance (or at least not in my head!) its about low flow speed so the droplets condense out. If you have one, high resistance, route out then the air speed will be damn fast and the droplets will stay suspended.

[The Batman]

I have a jegs oil separator somewhere

[vocky]

 

what about using sticky's method of connecting the oil filler cap to the PCV system ?

Wouldn't this bypass and have less resistance than original outlet and in effect bypass the separator and pull more oil out

 

connect it up as if it was another cam cover breather, so double the available air flow in or out, depending on what the engine is doing at the time

[CHILL Gone DUTCH]

 

what about using sticky's method of connecting the oil filler cap to the PCV system ?

Wouldn't this bypass and have less resistance than original outlet and in effect bypass the separator and pull more oil out  

connect it up as if it was another cam cover breather, so double the available air flow in or out, depending on what the engine is doing at the time

This will still cause my laminovas to oil up as it is now

[vocky]

it is indeed a quandary 

[CHILL Gone DUTCH]

This is the kind of conversation I'm after about this To help come up with a solution Don't mean to sound blunt

[vocky]

I know, but it does make your head hurt when trying to think of a viable solution 

[CHILL Gone DUTCH]

All I want to do is replace the vacuum or pressure from inlet with Using something else my thought was the exhaust can create the vacuum like the inlet just a bit more delayed I just need to find a way to get fresh air in when the inlet Pcv orifice is allowing air in to the manifold ( which in my head this is what pulls fresh air in to cam cover ) but this can't be done from exhaust

[CHILL Gone DUTCH]

I need some kind of two way valve controlled by exhaust vacuum

[vocky]

Air should go into the cam cover via the breather hose, the inlet manifold creates the vacuum, too much vacuum or too much pressure from the supercharger alters the PCV and thus the problems occur

Edited by vocky, 02 January 2015 - 06:59 PM.

[CHILL Gone DUTCH]

I even considered using the saab oil turbo return In the B207

Edited by CHILL Gone DUTCH, 02 January 2015 - 07:00 PM.

[Nev]

At the moment on my car I just vent the crank case + cam breathers via 1" tubes to under the engine with a gauze filter on the end of each. As a result there is a quite a lot of oil loss like this due to lack of condensation. I probably lose something like a cupful of oil like this every 150 miles. Also, this means the area near the gauze filters (the N/S/R wishbone) is covered in oily muck - good for keeping rust away though ! LOL

Edited by Nev, 02 January 2015 - 07:09 PM.