Velocity stack on turbo, + Catch can?

[AGlobalThreat]

I bought a velocity stack to put on the front of my turbo for special occasions (Not going to daily drive like that), but was wondering what I do with the hose going from the intake to the catch can, since there won't be any intake pipe anymore. Can I just leave the line unhooked from the intake during this time? Oil vapors will still be able to go into the catch can they just won't be PULLED through it like when the hose is hooked up to the intake. Comments? Insight? Help? All is appreciated.

 

[foreverpsycotic]

I have seen it where it is plumbed into the exhaust instead of the intake.

 

[rumptis]

I have seen it where it is plumbed into the exhaust instead of the intake.

Are you serious?

This is not a good idea.

 

[figgie]

AGlobalthreat?

Dude you been MIA for quite some time!

Are you serious?

This is not a good idea.

no he is.

It is fine as long as you do it post turbo. Only issue is that it will only work at higher engine speeds AND, some tracks don't allow that because of the oil that might spew and slick up the track.

 

[AGlobalThreat]

AGlobalthreat?

Dude you been MIA for quite some time!

Wha? I've been on here a lot lately. Been getting a lot of work done on my car trying to cram to get it (mostly) finished for Vegas. I'm hardly on supraforums anymore cuz that damn site is way too unreliable and the search doesnt even work anymore.

I don't want to plumb it to the exhaust cuz it's a street car and that's a lot of unneccesary work since it's already setup to filter through the mckinney catch can.

I just want to confirm that its safe to disconnect the intake line and leave it unhooked while the turbo has the velocity stack on it. Obviously it won't be pulling out as much oil vapor but it should still run fine with no vaccuum leaks or any kind of problems right?

 

[figgie]

Wha? I've been on here a lot lately. Been getting a lot of work done on my car trying to cram to get it (mostly) finished for Vegas. I'm hardly on supraforums anymore cuz that damn site is way too unreliable and the search doesnt even work anymore.

I don't want to plumb it to the exhaust cuz it's a street car and that's a lot of unneccesary work since it's already setup to filter through the mckinney catch can.

I just want to confirm that its safe to disconnect the intake line and leave it unhooked while the turbo has the velocity stack on it. Obviously it won't be pulling out as much oil vapor but it should still run fine with no vaccuum leaks or any kind of problems right?

well you can but the PCV system helps in other areas also like ring sealing etc.

Anyway. That velocity stack. You can get creative and plumb a barb to it so you can still have some vacuum to help in the PVC system (just an idea).

I have seen the WRC guys run their restrictors (looks like a velocity stack) and plumb sensors etc off the restrictor.

 

[foreverpsycotic]

AGlobalthreat?
no he is.

It is fine as long as you do it post turbo. Only issue is that it will only work at higher engine speeds AND, some tracks don't allow that because of the oil that might spew and slick up the track.

Glad something I said does not get shot down by a more respected member of the community

I plan on routing mine into the downpipe, after where the o2 sensor is. As it is, cruising with my car, I will be up there with the 4.3 gears, and the fact I do not drive at 55 all the time.

I know that this is not the best spot to ask this, but can someone tell me the thread pitch of a normal wideband or egt sensor? I am guessing that it is m12 x 1.25, as it is a common pitch.

 

[IJ.]

Exhaust PCV doesn't work all that well with Mufflers in place

 

[Poodles]

and it's not nice to cats...

and it doesn't work well unless exhaust velocity is high...

 

[AGlobalThreat]

well you can but the PCV system helps in other areas also like ring sealing etc.

Anyway. That velocity stack. You can get creative and plumb a barb to it so you can still have some vacuum to help in the PVC system (just an idea).

I have seen the WRC guys run their restrictors (looks like a velocity stack) and plumb sensors etc off the restrictor.

I'm not going to be able to do that before Wednesday. What if I take the line that normally goes to the intake and put it in front of the radiator, so the air being pulled through the radiator creates a little bit of vaccuum on the hose to pull the oil vapor into the catch can.

How do all the open turbo guys get away with this? How are they setting up their pcv? I rarely ever see it plumbed in the exhaust.

 

[Poodles]

Very few people run open turbos, it's best to have some pipe that can get the fresh air from the front snorkel hole instead of sucking from around the turbo...

 

[AGlobalThreat]

This is not for everyday driving. There are also LOTS of people out here that run open turbo. The velocity stack enlarges and extends the front of the turbo past the exhaust manifold. It speeds up the air as it enters the turbo and gets rid of the restriction from the intake pipe and filter. There will not be much temp difference on the dyno when the hood is open and air is blowing straight at the turbo.

 

[theKnifeArtist]

ever see those draggsters with those steel braided lines going to the exhaust collectors? i tried to find a pic and failed.

 

[7Mboost]

You said it was temporary right? Just throw a breather filter on it for that.

 

[AGlobalThreat]

You said it was temporary right? Just throw a breather filter on it for that.

Well that's the whole point. If people can just run breathers, can't I just disconnect the line temporarily while I have the velocity stack on? The oil vapor will still have a path to the catch can, there just won't be vaccuum pulling it into there (Just like if it had breathers).

 

[7Mboost]

Well that's the whole point. If people can just run breathers, can't I just disconnect the line temporarily while I have the velocity stack on? The oil vapor will still have a path to the catch can, there just won't be vaccuum pulling it into there (Just like if it had breathers).

Yeah that should be fine, and I've seen catch cans with breathers incorporated in them too, I think for temp use you'll have no problems.