DOHC B6 Information

[azgtx]

Also notice there is no pipe on the front of the cam cover as compared to the usdm cover.

[Advancedynamix]

Good to know. I just saw it as inferior compared to a proper catch can on the firewall.

Would it still pay to put a catch can after the pcv anyway?

You shouldn't need one. The big problem we have over here is the block vent is capped off. That's why we need a catch can from the valve cover vent.
This separator is far superior to a catch can. Catch cans just fill up and make a mess or need to be emptied. A separator drains oil back into the engine instead of catching it. All my cars have home made separators on them that work similarly to this factory one. Mine do incorperate the valve cover vent as well, but this shouldn't be necessary.
If you decide to vent the separator to atmosphere, rather than to the inlet pipe, you'll need to remove the pcv system and also vent the valve cover to atmosphere. This is because the atmospheric crank vent will act as an air leak into your intake manifold. Using the vacuum from the engine is a good method of preventing positive pressure in the crank case, so I would leave the system alone.

[Advancedynamix]

Huh thats quite interesting. I wonder if the BP blacks have a similar vent location. Is the third hose running to the intake required/benneficial? I was thinking of a block vent just as a vent hose and a drain hose.

Yes, you need to vent it to atmosphere, or better yet the intake vacuum.

[skeeters_keeper]

Huh thats quite interesting. I wonder if the BP blacks have a similar vent location. Is the third hose running to the intake required/benneficial? I was thinking of a block vent just as a vent hose and a drain hose.

[ryanprins13]

Thanks for that video mate! I've never actually seen one of those, but I had heard they existed. Since that's only a crank vent and not a valve cover vent, it's height is alright. The important part of this device is that it vents the block correctly. Here in the US, the engine is only ventilated through the valve cover. This is a major problem, because the oil is trying to drain, where the air is trying to escape. This means the air and oil are going separate directions in the same passages. It leads to poor block ventilation and added oil vapor in the air that is being vented. This was due to our emmisions standards being set by engineers with a very poor understanding of internal combustion engines.

Youve said the b6 or b6t has a block vent you can use, but is there a good spot on the b3 that you could drill and tap a fitting into to vent the block? Somewhere where if you had the pan off you could catch all the filings?

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[moz]

Good to know. I just saw it as inferior compared to a proper catch can on the firewall.

Would it still pay to put a catch can after the pcv anyway?

[Advancedynamix]

Hey boys
Here's a video of it.

Please excuse poor production and muffled voice (I had my thumb too close to the mic)

https://youtu.be/PeqTzNT1tCw

Thanks for that video mate! I've never actually seen one of those, but I had heard they existed. Since that's only a crank vent and not a valve cover vent, it's height is alright. The important part of this device is that it vents the block correctly. Here in the US, the engine is only ventilated through the valve cover. This is a major problem, because the oil is trying to drain, where the air is trying to escape. This means the air and oil are going separate directions in the same passages. It leads to poor block ventilation and added oil vapor in the air that is being vented. This was due to our emmisions standards being set by engineers with a very poor understanding of internal combustion engines.

[Dragonhealer]

Thanks moz!
totally news to me, the different setups they have tried

[moz]

Haha!
It caught me by surprise when I first saw it.

Im not a fan of this setup

[bhazard]

That's totally not where I expected it to go lol

[moz]

Hey boys
Here's a video of it.

Please excuse poor production and muffled voice (I had my thumb too close to the mic)

https://youtu.be/PeqTzNT1tCw

[shadetree]

Pick me ! Pick me !

[Advancedynamix]

I'm also one of them. Share away!

[fastivaca]

I would be Interested in seeing the factory separators
I'm sure others here would as well.

I am one of the others.... please share!

[william]

I would be Interested in seeing the factory separators
I'm sure others here would as well.