ATI Guys, what pcv setup you running?
Staging Lane
Joined: Sep 2004
Posts: 86
Likes: 0
From: logan utah
i have seen peaple run tubes from the valve cover down to the headers and the force of the exhaust pulls the pressure out of the crankcase. then you don't have oil colecting in the intake system. even with a can it will still suck alittle bit of oil in to it.
Originally Posted by NA$TY-TA
No need for a check valve......... i cap off the outlet from the intake manifold...... Just like in huggers pic's...... catch draws vaccum from the blower.....
Kyle
Kyle
OK if you live in Florida and always run long trips it could be fine, but in my case (cold winters and short trips) I think I really need a forced ventilation, or all the water condensation will remain in the block.
This of the headers sucking air through the engine is good! No PCV valve, no catch can...
Is it fine also if you have cats?
Originally Posted by NA$TY-TA
No need for a check valve......... i cap off the outlet from the intake manifold...... Just like in huggers pic's...... catch draws vaccum from the blower.....
Kyle
Kyle
CORRECT Kyle
I don't understand why people use the check valve. We know we don't want to "boost" the crankcase but you have to vent it especially with FI. No offense intended Tici.
Originally Posted by xssive
So you have a line from each valvecover to the catchcan, and then two lines to the blower hat? Do you have any sort of free air source for the valvecovers, or just the vacuum being pulley from the blower?
Just the blower drawing vacuum. Kurt at Wheel to Wheel said this is the best way to run it. They run it the same way on their FI cars for the most part. I consider him one of the experts for FI on LS1's. After all they have been involved in most of the high horsepower FI motors on this board not mention they may be the first group into the 7's in 05'. My whole set-up cost me about $50. Catch can from Jegs (slightly modified to fit where I wanted it) a couple fittings, and some fuel grade hose. Good luck!
Mark
Originally Posted by Got Me SOM
do 2002 f body's have the ls6 pcv system or no?
I run the LS6 style pcv setup and I am using the fresh air source from the blower inlet also. No catch can. I haven't noticed any oil in my intake track. I have no consumption issues either.
Do you really have enough vacuum between the blower and the filter to ventilate the crankcase? I believe there is a little, but not so much, if you have a nice filter like a K%N or so.
In my case I see oil and water in the catch can and if it overflows I really prefer have it directly in the manifold than going through the blower...
In my case I see oil and water in the catch can and if it overflows I really prefer have it directly in the manifold than going through the blower...
Winter here now. I do not have excess water, or vapor in the motor. The engine does not collect water, that I can see. Look at my pics again and see the valve train pics after 6000 miles of use. I talked about this with someone about 12 months ago, they too told me I would have a lot of condensation under the valve covers and such, from a lack of vac to the engine block. Keep in mind my setup is like a open air breather setup, it just vents to the catch can and now I have a steel braded line running down to vent the engine crankcase vapors below the car after the catchcan to prevent smelling engine vapors while I have the air on and sitting at a light. While the engine is running I can feel a steady stream of vapor coming out of the hose. The catch can still catches all the oil, if any. I mostly have water, that looks like a caramel moose drink. I have messed with this setup for a while and came up with this. The pics are old on my pic site, I need to update them. I'm still not running to the inlet of the blower. I don't want to have the blower suck up any oil which could lead to the MAF. I know it takes a ot of oil to do so, but I just dont want to.
By running the oil catch can like this, there is one draw back, I change the oil more often since the oil gets a little more dirty running a vent system VS a PCV system. The change is very small. Also, pushing as much power as I am the oil life goes away faster anyway. Well that is just my 2 cents..
Clint
By running the oil catch can like this, there is one draw back, I change the oil more often since the oil gets a little more dirty running a vent system VS a PCV system. The change is very small. Also, pushing as much power as I am the oil life goes away faster anyway. Well that is just my 2 cents..
Clint
Originally Posted by tici
Do you really have enough vacuum between the blower and the filter to ventilate the crankcase? I believe there is a little, but not so much, if you have a nice filter like a K%N or so.
In my case I see oil and water in the catch can and if it overflows I really prefer have it directly in the manifold than going through the blower...
In my case I see oil and water in the catch can and if it overflows I really prefer have it directly in the manifold than going through the blower...
Yes, you can feel the suction if you pull the PCV hose off the valve cover and crack the throttle with your thumb over the hose. Seems to be a perfect balance...no problems at all here. BTW a well balanced set-up will yield very little oil in the catch can. More moisture than anything.
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packy did you have problems with your dipstick popping out before you did the ls6 pcv system?
i have to check again, but last time i popped the oil cap i had a choo choo thing going on, i hope i didn't crack a ringland. arghh
i have to check again, but last time i popped the oil cap i had a choo choo thing going on, i hope i didn't crack a ringland. arghh
Hugger, I agree with the caramel stuff, also like a cappuccino!
Where is the small overpressure coming from? (...I can feel a steady stream of vapor coming out of the hose...)
I actually don't have a problem with the PCV, but there are so many informations around (right or wrong I dunno) about PCV and 98 engines, oil residuals in the manifold, pinging because of that oil...
I'm just trying to figure out how it really is. There are also independent electrical PCV systems (pumps), but I don't have a clou if it's really necessary to go so far.
Stefano
Where is the small overpressure coming from? (...I can feel a steady stream of vapor coming out of the hose...)
I actually don't have a problem with the PCV, but there are so many informations around (right or wrong I dunno) about PCV and 98 engines, oil residuals in the manifold, pinging because of that oil...
I'm just trying to figure out how it really is. There are also independent electrical PCV systems (pumps), but I don't have a clou if it's really necessary to go so far.
Stefano
Some people do run some Evac pumps. For instance, Caddy has some standard on some of their cars in the past. People have run these before, but it just does not pull enough air to really work for a FI car. If your running NA it's fine, but a FI car puts out much more positive crankcase pressure, the pump cant keep up.
Some people use a pump on their hot rod that is belt driven, these flow alot of air and will work for a FI car, but it's hard to setup and expensive. Some people have tried the old school way and run a line to the headers and allow the exhaust pressures to draw out excess vent from the motor. This setup works very well and provides plenty of neg vac for the motor. Problem is, you cant run this setup on a full exhaust. I've heard this can only work for a open header echaust system..
Clint
Some people use a pump on their hot rod that is belt driven, these flow alot of air and will work for a FI car, but it's hard to setup and expensive. Some people have tried the old school way and run a line to the headers and allow the exhaust pressures to draw out excess vent from the motor. This setup works very well and provides plenty of neg vac for the motor. Problem is, you cant run this setup on a full exhaust. I've heard this can only work for a open header echaust system..
Clint
tic i have the straight cut gears, my blower is LOUD.
if your car is at idle and your blowing smoke out of the oil cap, that's usually a blown ring land right? what are the chances that my pcv system is clogged or cant keep up? where do i need to look to check?
packy-think i'm dropping my car off to norris this week. hopefully gary can fix the problem cheaply
otherwise i gotta rob a bank to get my motor done.
if your car is at idle and your blowing smoke out of the oil cap, that's usually a blown ring land right? what are the chances that my pcv system is clogged or cant keep up? where do i need to look to check?
packy-think i'm dropping my car off to norris this week. hopefully gary can fix the problem cheaply
otherwise i gotta rob a bank to get my motor done.
Originally Posted by Got Me SOM
packy did you have problems with your dipstick popping out before you did the ls6 pcv system?
i have to check again, but last time i popped the oil cap i had a choo choo thing going on, i hope i didn't crack a ringland. arghh
i have to check again, but last time i popped the oil cap i had a choo choo thing going on, i hope i didn't crack a ringland. arghh
I hate to say it but that is exactly what my car was doing before the motor went...
Mne was huffing smoke out of the oil cap and every once in awhile the dipstick would fly out. 
I had 3 broken ringlands and a lot of worn out rings on my stock LS1 motor.
I hope you don't have any major problems.
CRAP! yea I don't think its super serious but I know damage is done. I really don't even want to drive her to Norris risking more possible damage.
How much did Norris charge you to do a forged shortblock?
How much did Norris charge you to do a forged shortblock?
Originally Posted by Got Me SOM
CRAP! yea I don't think its super serious but I know damage is done. I really don't even want to drive her to Norris risking more possible damage.
How much did Norris charge you to do a forged shortblock?
How much did Norris charge you to do a forged shortblock?
Last edited by Packy; Dec 18, 2004 at 05:00 PM.