#105926, "RE: catch can install" In response to Reply # 0 Aug-29-07 07:38 PM by foggy45
the way the pic looks to me is that you have it "Y"ed from the PCV valve, and one goes to the VC and the other to the Catch can.
why even have the "Y" there? just have both lines coming off the VC and going to the can, then have a line from the can going back to the intake manifold? the whole reason the can is there is to catch oil, if you put the "Y" in there then some of the blowby will bypass the can all together.
if you want a true crankcase evacuation then i would think about mounting the suction line to either the Exhaust system or to the intake pipe to the turbine compresor. that will give your evacuation benifit most all the time then.
like this: except that when i get my manifold and downpipe finished then i will have a spot to mount the line from the can where the breather now sits
______________________________________ ______________________________________ "Don't fear the weapon, fear the soul of the warrior using it." "My CEL only goes off when i remove my battery."
Best sum up of working on a 2GNT DR1665- "#5. Spike that motherfucker on the garage floor and grab a beer. You deserve it."
Ahhhh Priceless . . . eclipse982nrRST "its actually lightish red" RoninEclipse2G "yeah, they already have a color for that... it's called PINK"
#105927, "RE: catch can install" In response to Reply # 1
thats how i intially thought t was supposed to be as well, but as i was reading, many said a check/pcv had to be in plase as well? inmy drawing, i left stock pcv in there, so when it saw boost and closed, all the gasses/oil would g to the can and not the mani. if i set it up your way will i see any perfomance loss due to the lack of oil left for scavenging?
#105933, "RE: catch can install" In response to Reply # 2
yes you are right, if you use the vacuum source off the can as the intake manifold then there needs to be a check valve so you dont presurise your crankcase.
the only time that the crankcase will vent would be under vacuum anyway (off boost) so you wont notice any effects from not scavanging any of what was in the crankcase
so yeah, if you want to keep the valve id use it as part of the return from the can then.
______________________________________ ______________________________________ "Don't fear the weapon, fear the soul of the warrior using it." "My CEL only goes off when i remove my battery."
Best sum up of working on a 2GNT DR1665- "#5. Spike that motherfucker on the garage floor and grab a beer. You deserve it."
Ahhhh Priceless . . . eclipse982nrRST "its actually lightish red" RoninEclipse2G "yeah, they already have a color for that... it's called PINK"
#105949, "RE: catch can install" In response to Reply # 3 Aug-30-07 03:24 PM by WickedESi
I use a large Kobalt air compressor filter/dryer, w/ the element removed. Works great. I usually have the other end plumbed into the exhaust for a crankcase evacuation. But in the pic I'm running the downpipe open for a track day, so I don't have my exhaust connection. Turbo applications I would leave the PCV valve off, and not route back into the intake, just vent it.
Joel Baldridge, ASE Certified Master Technician, Audi Certified Expert Technician
#105950, "RE: catch can install" In response to Reply # 4 Aug-30-07 04:13 PM by totaleclipse_05
Do you have any more pics of how your catchcan is hooked up Wicked? I kind of have an idea, but that strut bar is in the way.
Mike D -------------------------------------------------------------------------------------------------
Originally posted by DR1665 You're welcome to all the beer you can drink, but you have to go get it yourself. Don't get pissy when we point to the fridge and tell you to get it yourself.
#105952, "RE: catch can install" In response to Reply # 6
That's a neat little setup you got there. Any drawbacks to running it that way?
Mike D -------------------------------------------------------------------------------------------------
Originally posted by DR1665 You're welcome to all the beer you can drink, but you have to go get it yourself. Don't get pissy when we point to the fridge and tell you to get it yourself.
#105961, "RE: catch can install" In response to Reply # 4
Originally posted by WickedESi I use a large Kobalt air compressor filter/dryer, w/ the element removed. Works great. I usually have the other end plumbed into the exhaust for a crankcase evacuation. But in the pic I'm running the downpipe open for a track day, so I don't have my exhaust connection. Turbo applications I would leave the PCV valve off, and not route back into the intake, just vent it.
#105975, "RE: catch can install" In response to Reply # 10
So running without a PCV valve off of the valve cover won't "hurt" it? Just plumb both the lines into a catch can?
Mike D -------------------------------------------------------------------------------------------------
Originally posted by DR1665 You're welcome to all the beer you can drink, but you have to go get it yourself. Don't get pissy when we point to the fridge and tell you to get it yourself.
#105978, "RE: catch can install" In response to Reply # 11
Originally posted by totaleclipse_05 So running without a PCV valve off of the valve cover won't "hurt" it? Just plumb both the lines into a catch can?
correct! but remember if you decide to plumb the can back to the manifold (or other source that may see +psi) you MUST have some sort of check valve inline or you'll presurise the whole system when you boost.
______________________________________ ______________________________________ "Don't fear the weapon, fear the soul of the warrior using it." "My CEL only goes off when i remove my battery."
Best sum up of working on a 2GNT DR1665- "#5. Spike that motherfucker on the garage floor and grab a beer. You deserve it."
Ahhhh Priceless . . . eclipse982nrRST "its actually lightish red" RoninEclipse2G "yeah, they already have a color for that... it's called PINK"
