Is this right
- Thread starter Proto X
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VermontTy
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Re: Is this right
I'm kind of dumb, but I'm lost on what you have.
Having a breather on the drivers side is usually what to do if you have anything other than the stock air filter setup. The metal tube / hose from the drivers rocker cover attaches to a nipple on the bottom of the stock air box. When you put on a cold air kit, or remove the stock air box, there's nowhere for that hose off the drivers rocker cover to go, so you just toss a 3/4" beather in the hole. On the passengers side, stock there is a "Y" that goes into the passengers side rocker cover. On each side of that is a PCV valve. The rear PCV valve attaches to the throttle body back by the EGR valve. The front PCV valve attaches to the stock air tube going across the top of the radiator. Again, if that has been removed, a breather might be tossed in that hole too.
It's normal to see some oil in the stock air tube and orange elbow. Where exactly are you seeing the buildup? Do you have stock valve covers?
I'm kind of dumb, but I'm lost on what you have.
Having a breather on the drivers side is usually what to do if you have anything other than the stock air filter setup. The metal tube / hose from the drivers rocker cover attaches to a nipple on the bottom of the stock air box. When you put on a cold air kit, or remove the stock air box, there's nowhere for that hose off the drivers rocker cover to go, so you just toss a 3/4" beather in the hole. On the passengers side, stock there is a "Y" that goes into the passengers side rocker cover. On each side of that is a PCV valve. The rear PCV valve attaches to the throttle body back by the EGR valve. The front PCV valve attaches to the stock air tube going across the top of the radiator. Again, if that has been removed, a breather might be tossed in that hole too.
It's normal to see some oil in the stock air tube and orange elbow. Where exactly are you seeing the buildup? Do you have stock valve covers?
Proto X
New member
Re: Is this right
Yes stock valve covers. The previous owner put on a cone filter on the pass. side. Drivers side: Oil fill has a filter on it. Original that went to box on the rear of the driver side is just hanging there. Passenger side: Y with both PCV valves and the front one goes to the top of the cone filter.
Yes stock valve covers. The previous owner put on a cone filter on the pass. side. Drivers side: Oil fill has a filter on it. Original that went to box on the rear of the driver side is just hanging there. Passenger side: Y with both PCV valves and the front one goes to the top of the cone filter.
VermontTy
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Re: Is this right
Cone filter meaning the air filter for the turbo? It sounds like you have everything in the right place. If I were you, I'd shove a breather in the hole where the front PCV valve is, and cap off where it hooks to the cone filter. What's probably happening is the suction from the turbo is pulling the valve on the PCV open and allowing you to suck in oil vapor / mist, which will burn in the motor, but will also make stuff ugly.
Cone filter meaning the air filter for the turbo? It sounds like you have everything in the right place. If I were you, I'd shove a breather in the hole where the front PCV valve is, and cap off where it hooks to the cone filter. What's probably happening is the suction from the turbo is pulling the valve on the PCV open and allowing you to suck in oil vapor / mist, which will burn in the motor, but will also make stuff ugly.
VermontTy
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Re: Is this right
Put a filter on the drivers back side where the tube is hanging there. Any kind will do; 3/4" press in. I've just got some crappy chrome one that I painted black; it was like $5. Put the same kind of thing (but small) on the passengers front where it went to the filter, and put a oil fil cap on; ditch the filter in the oil fill hole.
I had a small breather that came with a Kenne Bell cold air kit that plugged into the end of that dangling hose from the drivers side that was about 1.5" in diameter, it would work well on your passengers side where you're space-limited because of the intercooler.
Put a filter on the drivers back side where the tube is hanging there. Any kind will do; 3/4" press in. I've just got some crappy chrome one that I painted black; it was like $5. Put the same kind of thing (but small) on the passengers front where it went to the filter, and put a oil fil cap on; ditch the filter in the oil fill hole.
I had a small breather that came with a Kenne Bell cold air kit that plugged into the end of that dangling hose from the drivers side that was about 1.5" in diameter, it would work well on your passengers side where you're space-limited because of the intercooler.
crashing_sux
Blow Me?
Re: Is this right
FWIW, I would just block the passenger front pcv valve spot (not put a filter in) or remove the y completely and leave a single pcv. Putting a filter in kind of negates the whole reason for having a pcv valve on the passenger side, at that point you might as well just put a single filter in.
The reason for filters on the driver side and two pcv's on the passener is so you pull air through the engine from the drives side over to the passenger, pulling the vapors with it. If you throw a filter on the passenger side up front then when the rear pcv is active you'll just be sucking air through the filter right in front of it, instead of drawing it through the crankcase and scavenging the vapors. Make sense?
The reason there was a Y to begin with was because the factory wanted constant vacuum pulling there, so when you had manifold vacuum the rear pcv would be sucking, and when you are under boost the pressure would shut the rear pcv and there would be a vacuum on the inlet side of the turbo, which would be sucking on the front pcv.
Leaving only a rear pcv still gives you vacuum when you're not under boost, which is the majority of the time, but leaving the rear pcv in and putting a filter on the front just breaks the system introducing a source of air for the vacuum to pull that doesn't require drawing air through the motor. I can't see any benefit to doing that.
FWIW, I would just block the passenger front pcv valve spot (not put a filter in) or remove the y completely and leave a single pcv. Putting a filter in kind of negates the whole reason for having a pcv valve on the passenger side, at that point you might as well just put a single filter in.
The reason for filters on the driver side and two pcv's on the passener is so you pull air through the engine from the drives side over to the passenger, pulling the vapors with it. If you throw a filter on the passenger side up front then when the rear pcv is active you'll just be sucking air through the filter right in front of it, instead of drawing it through the crankcase and scavenging the vapors. Make sense?
The reason there was a Y to begin with was because the factory wanted constant vacuum pulling there, so when you had manifold vacuum the rear pcv would be sucking, and when you are under boost the pressure would shut the rear pcv and there would be a vacuum on the inlet side of the turbo, which would be sucking on the front pcv.
Leaving only a rear pcv still gives you vacuum when you're not under boost, which is the majority of the time, but leaving the rear pcv in and putting a filter on the front just breaks the system introducing a source of air for the vacuum to pull that doesn't require drawing air through the motor. I can't see any benefit to doing that.
'JustDreamin'
Dream: 6LV8 Turbo Bravada
Re: Is this right
Looks like somebody has done their homework on how the factory PCV system works. Good explanation of why it was set up that way.
'Dreamin'
Looks like somebody has done their homework on how the factory PCV system works. Good explanation of why it was set up that way.
'Dreamin'
VermontTy
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Re: Is this right
Makes sense. The way I view the PCV system is just a vent for crankcase pressure. I really don't care if the air pushed out, sucked in or combusted. I just want to have a way for the pressure to escape without coming up through the dipstick tube (had that happen once back in the day; big mess.) I see your reasoning, and setting it up the way you describe would allow for better "normal" operation than the frankenstein way I have. I was mainly aiming to vent the case and get rid of some hoses; clean up stuff under the hood.crashing_sux said:
crashing_sux
Blow Me?
Re: Is this right
Oh yeah, as far as the oil you could run an air/oil separator. Like what you have on an air compressor, cheap enough and they'll help keep the oil out of your engine.
Oh yeah, as far as the oil you could run an air/oil separator. Like what you have on an air compressor, cheap enough and they'll help keep the oil out of your engine.
CarbonFiber AWD
Donating Member
Re: Is this right
Travis,
Do you know where I work at on Battlefield street ? Its near Grizzley's warehouse. You could stop by and view mine. I think its done right, we'll check it out .....love to see your new Sy. Now I'm not so ALONE :tup:
Vinny
Travis,
Do you know where I work at on Battlefield street ? Its near Grizzley's warehouse. You could stop by and view mine. I think its done right, we'll check it out .....love to see your new Sy. Now I'm not so ALONE :tup:
Vinny