Crank case ventelation and boosted cars.
01-06-2002, 06:09 PM
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Crank case ventelation and boosted cars.
I know I'm kinda getting hungup on this topic, but it seems that no one is really running an adequate setup. I want something that will always (under vacuum, atmosphere and boost) pull out crankcase vapors and pull in fresh air, and without the aid of any pumps.
How are other, stock, boosted cars setup? Like eclipses, WRX, and so on?
I just want something that will keep oil from running through my system, and will always be pulling out my crank case vapors.
I was thinking of making the exhaust create a vacuum If I use a tube going into it at a very heavy angle, it should work, right? If I do this, I could have that pull out my vapors and pull in fresh air from a valve cover breather filter.
Damn, maybe I'm just too concerned about this.
[Modified by 00SilverLS, 10:25 PM 1/6/2002]
How are other, stock, boosted cars setup? Like eclipses, WRX, and so on?
I just want something that will keep oil from running through my system, and will always be pulling out my crank case vapors.
I was thinking of making the exhaust create a vacuum If I use a tube going into it at a very heavy angle, it should work, right? If I do this, I could have that pull out my vapors and pull in fresh air from a valve cover breather filter.
Damn, maybe I'm just too concerned about this.
[Modified by 00SilverLS, 10:25 PM 1/6/2002]
01-06-2002, 06:21 PM
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Re: Crank case ventelation and boosted cars. (00SilverLS)
I just asked the same thing today and after some research I've found that an oil catch can from greddy or cusco would be the ticket. check it out
01-06-2002, 06:23 PM
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Re: Crank case ventelation and boosted cars. (glagola1)
I have the oil catch can....it doesn't solve anything escept for oil consumption during vacuum.
01-06-2002, 06:35 PM
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Re: Crank case ventelation and boosted cars. (00SilverLS)
Ok, am I being too concerned about this topic? Do you really need fresh air coming in during boost? With a filter on the valve cover, any positive pressure can vent out on its own, and the system still works like stock during vacuum. Is this good enough?
Damn....this is really starting to get on my nerves.
Damn....this is really starting to get on my nerves.
01-06-2002, 08:09 PM
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Re: Crank case ventelation and boosted cars. (00SilverLS)
Ok, hows this sound:
Two breather filters on top of valve cover (remember that my pcv line comes
out of the valve cover also). Then two barb fitting screwed into the back
of the block (there are spots on the back of the block that have access to
the crank case). From there both lines will run to my Moroso oil catch can (there
will be an extra fitting in the side for the second line). Then from the
top of the can I will run a large line to a barb in the exhaust (after the cat) that is at
an angle to create vacuum. Also in either the two first lines, or the last
big one will be either pcv valves or check valves.
And heres a completely crappy pic of what I'm talking about:
[Modified by 00SilverLS, 1:07 AM 1/7/2002]
Two breather filters on top of valve cover (remember that my pcv line comes
out of the valve cover also). Then two barb fitting screwed into the back
of the block (there are spots on the back of the block that have access to
the crank case). From there both lines will run to my Moroso oil catch can (there
will be an extra fitting in the side for the second line). Then from the
top of the can I will run a large line to a barb in the exhaust (after the cat) that is at
an angle to create vacuum. Also in either the two first lines, or the last
big one will be either pcv valves or check valves.
And heres a completely crappy pic of what I'm talking about:
[Modified by 00SilverLS, 1:07 AM 1/7/2002]
01-06-2002, 08:37 PM
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Re: Crank case ventelation and boosted cars. (00SilverLS)
Why can't the PCV be routed into the intake for the turbo? I have a feeling its because of the turbine wheel and the oil from the PCV system, but I can't learn if I dont ask questions 
. EV.
. EV.
01-06-2002, 08:46 PM
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Re: Crank case ventelation and boosted cars. (ElectronVTEC)
You dont want oil going through your turbo, intake pipes, IC,then your engine. It would be nice if it just collected in a can, and all the vapors went out the exhaust with all the rest of the ****.
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01-06-2002, 08:48 PM
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Re: Crank case ventelation and boosted cars. (ElectronVTEC)
I've seen others route the valve cover nipple into the turbo intake, which is what I will probably do. Everybody I've talked to says they don't have a problem sucking any oil, and inside my valve cover is a simple baffle so I think I won't have problems either. I also just checked my PCV valve hose where it attaches to the intake manifold and there is no oil whatsoever, so I think I am also safe without a catch can. Keep in mind I have an SOHC so my setup may differ from yours since you're running a different motor.
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