Quick valve cover vent tube quetion
05-10-2008, 06:09 PM
#1
Quick valve cover vent tube quetion I've got my build back together but when I bought my powdercoated valve covers I didn't realize that they were without the vent tube that runs to the fresh air inlet on the Throttle body as well as the rear vent tube on the passenger side and the rear on on the drivers side as well. What do I do about this? Can I just buy the tube and put it in or what?
Here's a picture to help describe what I'm talking about....
Here's a picture to help describe what I'm talking about....
05-11-2008, 01:09 AM
#4
The can run with out plumbing the valve cover to the TB but you should plug he TB hole to prevent air from getting in through it.
You need to vent crankcase pressure some how. You dont need to shove it back into the engine. If you leave that the way it is it will drip and spew oil from the valve cover tube. You need to do something about it.
Any air getting into the intake not through the MAF is unmetered air, it effects the tune. You need to do a few things to correct yours.
You need to vent crankcase pressure some how. You dont need to shove it back into the engine. If you leave that the way it is it will drip and spew oil from the valve cover tube. You need to do something about it.
Any air getting into the intake not through the MAF is unmetered air, it effects the tune. You need to do a few things to correct yours.
05-11-2008, 01:46 PM
#6
The can run with out plumbing the valve cover to the TB but you should plug he TB hole to prevent air from getting in through it.
You need to vent crankcase pressure some how. You dont need to shove it back into the engine. If you leave that the way it is it will drip and spew oil from the valve cover tube. You need to do something about it.
Any air getting into the intake not through the MAF is unmetered air, it effects the tune. You need to do a few things to correct yours.
You need to vent crankcase pressure some how. You dont need to shove it back into the engine. If you leave that the way it is it will drip and spew oil from the valve cover tube. You need to do something about it.
Any air getting into the intake not through the MAF is unmetered air, it effects the tune. You need to do a few things to correct yours.
Will this solve my problems? I don't mind having the breather on the oil fill.
Thanks
05-11-2008, 02:40 PM
#7
It will push a lot of gaseous gunk out of the breather.
Ideal is to vent both valve covers to a catch can and then to the intake. Revxtreme has a catch can with a built in pcv, at Nasty's we sell a vented catch can and dont run it back into the intake. Either work good. There is merit to the vacum draw to evacuate the harmul gasses and this is where the Revxtreme can is very nice. Our setup is more a race car application.
Ideal is to vent both valve covers to a catch can and then to the intake. Revxtreme has a catch can with a built in pcv, at Nasty's we sell a vented catch can and dont run it back into the intake. Either work good. There is merit to the vacum draw to evacuate the harmul gasses and this is where the Revxtreme can is very nice. Our setup is more a race car application.
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05-11-2008, 05:22 PM
#8
It will push a lot of gaseous gunk out of the breather.
Ideal is to vent both valve covers to a catch can and then to the intake. Revxtreme has a catch can with a built in pcv, at Nasty's we sell a vented catch can and dont run it back into the intake. Either work good. There is merit to the vacum draw to evacuate the harmul gasses and this is where the Revxtreme can is very nice. Our setup is more a race car application.
Ideal is to vent both valve covers to a catch can and then to the intake. Revxtreme has a catch can with a built in pcv, at Nasty's we sell a vented catch can and dont run it back into the intake. Either work good. There is merit to the vacum draw to evacuate the harmul gasses and this is where the Revxtreme can is very nice. Our setup is more a race car application.
Thanks,
Drew
05-11-2008, 06:14 PM
#10
Thanks,
Drew
05-11-2008, 07:43 PM
#12
Ah, so since I am now venting pressure through the valley cover rather than the valve covers I can just run my breather on the oil fill cap and plug the three holes on my valve covers and one on the throttle body with no ill effects?
Is this correct? Sorry for being a PITA I'm just trying to figure this out.
Thanks for the help.
Is this correct? Sorry for being a PITA I'm just trying to figure this out.
Thanks for the help.
05-11-2008, 09:30 PM
#14
If you plug them all and use the valley cover vent you need the catch to attach to it and then vacum draw from the intake on the other side of the catch can. Make sure you plug any open line to the intake... like that open TB line you have. The other line will be your vacum. Get the pvc in between it as well.
05-11-2008, 10:27 PM
#15
If you plug them all and use the valley cover vent you need the catch to attach to it and then vacum draw from the intake on the other side of the catch can. Make sure you plug any open line to the intake... like that open TB line you have. The other line will be your vacum. Get the pvc in between it as well.
Thanks for all the help man! I appreciate it.
Drew
05-12-2008, 05:03 AM
#16
Its a closed loop system. The one in the photo draws clean air in from the TB and through the motor internals where it is drawn into the intake to be burned.
Your LS6 valley cover only replaces the dirty tubes from each valve cover and the PCV valve which meters flow, you still need a clean air source or you will be pressurizing the internals of the motor, which is bad. You need to ensure that the blow-by is purging correctly.
Best way to do this is to put a tube from the passenger side valve cover to the TB, as shown above in red as you have only replaced the blue/gold tubes of the system with your LS6 valley cover.
Your LS6 valley cover only replaces the dirty tubes from each valve cover and the PCV valve which meters flow, you still need a clean air source or you will be pressurizing the internals of the motor, which is bad. You need to ensure that the blow-by is purging correctly.
Best way to do this is to put a tube from the passenger side valve cover to the TB, as shown above in red as you have only replaced the blue/gold tubes of the system with your LS6 valley cover.
05-12-2008, 10:30 AM
#17
Its a closed loop system. The one in the photo draws clean air in from the TB and through the motor internals where it is drawn into the intake to be burned.
Your LS6 valley cover only replaces the dirty tubes from each valve cover and the PCV valve which meters flow, you still need a clean air source or you will be pressurizing the internals of the motor, which is bad. You need to ensure that the blow-by is purging correctly.
Best way to do this is to put a tube from the passenger side valve cover to the TB, as shown above in red as you have only replaced the blue/gold tubes of the system with your LS6 valley cover.
Your LS6 valley cover only replaces the dirty tubes from each valve cover and the PCV valve which meters flow, you still need a clean air source or you will be pressurizing the internals of the motor, which is bad. You need to ensure that the blow-by is purging correctly.
Best way to do this is to put a tube from the passenger side valve cover to the TB, as shown above in red as you have only replaced the blue/gold tubes of the system with your LS6 valley cover.
05-12-2008, 07:00 PM
#18
https://ls1tech.com/forums/showthrea...+revxtreme+pcv
This should show you every thing you need. You must draw vacuum to flush the crankcase out & you must have a PCV valve to control it.
We sell the oil fill cap with integrated breather filter for $19 plus S&H if you need.
05-13-2008, 02:02 AM
#19
https://ls1tech.com/forums/showthrea...+revxtreme+pcv
This should show you every thing you need. You must draw vacuum to flush the crankcase out & you must have a PCV valve to control it.
We sell the oil fill cap with integrated breather filter for $19 plus S&H if you need.
This should show you every thing you need. You must draw vacuum to flush the crankcase out & you must have a PCV valve to control it.
We sell the oil fill cap with integrated breather filter for $19 plus S&H if you need.
Last edited by 98RedBird; 05-13-2008 at 02:13 AM.
