4396 replies to this topic

[CHILL Gone DUTCH]

Tried that and ended up with all this oil exiting from the filter, So I'm introducing the positive pressure to the system

Edited by CHILL Gone DUTCH, 23 June 2014 - 02:32 PM.

[chris_uk]

I just threw my cam cover breather into a bottle.

[fezzasus]

Tried that and ended up with all this oil exiting from the filter, So I'm introducing the positive pressure to the system

 

You tried it with an open PCV valve?

[CHILL Gone DUTCH]

I just threw my cam cover breather into a bottle.

Don't you have your Pcv orifice closed in the head

[CHILL Gone DUTCH]

Tried that and ended up with all this oil exiting from the filter, So I'm introducing the positive pressure to the system

  You tried it with an open PCV valve?

Yes but doesn't work under heavy track use

[CHILL Gone DUTCH]

I'm hoping the positive pressure will keep the Pcv valve on the inlet manifold open under heavy loads and replacing the nasty fumes with fresh air

[Steve.i.am]

The PCV valve is only opened by presence of vacuum in the intake manifold. It closes off as soon as the intake manifold goes from vaccuum to +ve pressure (ie boost). If it didn't do this you'd be pushing boost pressure through it into the crankcase.

 

All I can see happening with what you've done here is under load all the crap you used to chuck out the breather to the back of the car will now be going through your inlet.

 

[CHILL Gone DUTCH]

Do you not think the vacuum will pull the gases and leave the oil?

[smiley]

All I can see happening with what you've done here is under load all the crap you used to chuck out the breather to the back of the car will now be going through your inlet.

 

 

Yes that is the horrid theory.

 

I am on the same as Mr Chill with PCV open on the B207 but with a catch tank between cam cover and inlet.

Did a few hours of track, and still need to check the tank.

 

May do that this evening

[CHILL Gone DUTCH]

All I can see happening with what you've done here is under load all the crap you used to chuck out the breather to the back of the car will now be going through your inlet.  

  Yes that is the horrid theory.   I am on the same as Mr Chill with PCV open on the B207 but with a catch tank between cam cover and inlet. Did a few hours of track, and still need to check the tank.   May do that this evening

Let me no the results, do you have a separator ??

[Steve.i.am]

Do you not think the vacuum will pull the gases and leave the oil?

 

I wish there were some easy solution to this - can try mate but I doubt it.

 

When under load (which is where the problem is) you no longer have a vacuum on the inlet anyway. I can't see how you wont get the same stuff out the breather now as before - only difference is where it is going...

 

I have my breather routed to the same place you did - at offside rear of the car and I get oily deposits all over the back of it on trackdays like you - although nowhere as bad as yours. I am going to move the breather back to somewhere near the side air intake - and higher up. I am wondering with the exit being so low its only making the oil loss out of it worse.

[CHILL Gone DUTCH]

Do you not think the vacuum will pull the gases and leave the oil?

  I wish there were some easy solution to this - can try mate but I doubt it.   When under load (which is where the problem is) you no longer have a vacuum on the inlet anyway. I can't see how you wont get the same stuff out the breather now as before - only difference is where it is going...   I have my breather routed to the same place you did - at offside rear of the car and I get oily deposits all over the back of it on trackdays like you - although nowhere as bad as yours. I am going to move the breather back to somewhere near the side air intake - and higher up. I am wondering with the exit being so low its only making the oil loss out of it worse.

When I tried any other position than behind the wheels I got nasty smells in the cabin

[vocky]

I still have zero oil or oil mist coming from my OEM cam breather pipe, GM seem to know what they were doing when they spent a small fortune creating the PCV system 

[Steve.i.am]

I still have zero oil or oil mist coming from my OEM cam breather pipe, GM seem to know what they were doing when they spent a small fortune creating the PCV system 

 

Hmm - is this more of an SC issue really? IE causing a lot more blow by & crankcase pressure..?

[CHILL Gone DUTCH]

I still have zero oil or oil mist coming from my OEM cam breather pipe, GM seem to know what they were doing when they spent a small fortune creating the PCV system 

I'm hoping from the same, Time will tell

[chris_uk]

I still have zero oil or oil mist coming from my OEM cam breather pipe, GM seem to know what they were doing when they spent a small fortune creating the PCV system 

 

same here, i must of done umpteen trackdays and road miles and it was about 1/2 way up my bottle.. 

 

i hardly get any really.

[CHILL Gone DUTCH]

I still have zero oil or oil mist coming from my OEM cam breather pipe, GM seem to know what they were doing when they spent a small fortune creating the PCV system 

  same here, i must of done umpteen trackdays and road miles and it was about 1/2 way up my bottle..    i hardly get any really.

I think vocky means his is fitted to inlet like mine

Edited by CHILL Gone DUTCH, 23 June 2014 - 03:57 PM.

[chris_uk]

i was referring to the amount really.

[CHILL Gone DUTCH]

i was referring to the amount really.

If you have none or next to none is it not a good idea to go to the oem setup which I'm trying

[PaulCP]

I still have zero oil or oil mist coming from my OEM cam breather pipe, GM seem to know what they were doing when they spent a small fortune creating the PCV system 

  Hmm - is this more of an SC issue really? IE causing a lot more blow by & crankcase pressure..?

I don't believe so. On previous tuning attempts (anybody remember the AMD days), well before mine was SCd, it always threw out oil through the breather, so much so that the TB became caked in the blow by substance hence reducing power before it was cleaned out. Following that experience the breather was removed from the inlet and re routed into a catch tank. I think it is a simple as some engines "breathe" more heavily than others when tweaked. If not then mine has been fubared for the past 10 years

Edited by PaulCP, 23 June 2014 - 05:35 PM.