Official Turbo LSJ thread!!!
08-10-2013, 10:32 AM
#6401
I cant speak for others setups but mine is pretty much the way gm designed it with bigger more free flowing fittings and a catch can.
08-10-2013, 11:07 AM
#6402
yes, check valve in place. Hahns manifolds come that way, retaining the stock configuration. I even used pressurized air to check one side and the other. Air will not enter the head at boost since its forcing the check valve closed. When vacuum comes on hard after the TB shuts and you are in decel the check valve opens up under vacuum pulling air from the head.
I cant speak for others setups but mine is pretty much the way gm designed it with bigger more free flowing fittings and a catch can.
And words aren't workin so maybe pictures will lol
08-10-2013, 07:19 PM
#6408
so agree or disagree:
the pcv system is used to consume crankcase vapors in the combustion process instead of venting them to the atmosphere. Fresh air from the intake system is supplied to the crankcase mixed with blow by gases and then passed through a calibrated orifice into the intake manifold.
Thw primary control is through the pcv orifice which meters the flow depending on inlet vacuum. The pcv orifice is an integral part of the rocker cover.
if abnormal operating conditions occur, the system is designed to allow excessive amounts of blow by gases to backflow through the crankcase vent into the intake system to be consumed by normal combustion.
The moment you significantly change your engine the requirements will change. If you change the orifice sizes in the PCV system then the system wont function as designed. The best you can say if you mod your car and it runs well, is that it runs well.
the pcv system is used to consume crankcase vapors in the combustion process instead of venting them to the atmosphere. Fresh air from the intake system is supplied to the crankcase mixed with blow by gases and then passed through a calibrated orifice into the intake manifold.
Thw primary control is through the pcv orifice which meters the flow depending on inlet vacuum. The pcv orifice is an integral part of the rocker cover.
if abnormal operating conditions occur, the system is designed to allow excessive amounts of blow by gases to backflow through the crankcase vent into the intake system to be consumed by normal combustion.
The moment you significantly change your engine the requirements will change. If you change the orifice sizes in the PCV system then the system wont function as designed. The best you can say if you mod your car and it runs well, is that it runs well.
08-10-2013, 08:36 PM
#6410
so agree or disagree:
the pcv system is used to consume crankcase vapors in the combustion process instead of venting them to the atmosphere. Fresh air from the intake system is supplied to the crankcase mixed with blow by gases and then passed through a calibrated orifice into the intake manifold.
Thw primary control is through the pcv orifice which meters the flow depending on inlet vacuum. The pcv orifice is an integral part of the rocker cover.
if abnormal operating conditions occur, the system is designed to allow excessive amounts of blow by gases to backflow through the crankcase vent into the intake system to be consumed by normal combustion.
The moment you significantly change your engine the requirements will change. If you change the orifice sizes in the PCV system then the system wont function as designed. The best you can say if you mod your car and it runs well, is that it runs well.
the pcv system is used to consume crankcase vapors in the combustion process instead of venting them to the atmosphere. Fresh air from the intake system is supplied to the crankcase mixed with blow by gases and then passed through a calibrated orifice into the intake manifold.
Thw primary control is through the pcv orifice which meters the flow depending on inlet vacuum. The pcv orifice is an integral part of the rocker cover.
if abnormal operating conditions occur, the system is designed to allow excessive amounts of blow by gases to backflow through the crankcase vent into the intake system to be consumed by normal combustion.
The moment you significantly change your engine the requirements will change. If you change the orifice sizes in the PCV system then the system wont function as designed. The best you can say if you mod your car and it runs well, is that it runs well.
What you have said here if anything is boosted my confidence that what I came up with for PCV is effective.
Last edited by c130aviator; 08-10-2013 at 08:43 PM.
08-10-2013, 08:39 PM
#6411
Yes it will since you timing is off and valves are not opening and closing as they should. I would be less worried about the tune and more worried about interference from the valves hitting the pistons and destroying my head, block, etc.
There is a forum for that.
Pictures & Videos - Cobalt SS Network
There is a forum for that.
Pictures & Videos - Cobalt SS Network
08-10-2013, 09:10 PM
#6412
Originally Posted by c130aviator;7125532[B
[I]
If in fact what you are saying is true then my system is working as stock. Under vacuum the check valve is opening in the head pulling out the gases in the crank case and into the intake manifold, the tube from my 3/8" breather is pulling fresh air from my turbo intake pre-turbo as it would pre-supercharger. At any rate whether changing just the orifices to some slightly larger than a coffee stirrer is hurting it I would disagree. However I do see the need for the head not to be blocked off and for the check valve to be in place to allow the boost to not enter the head but only pull gasses from it. In that case again my setup is working as gm had designed except with the addition of a catch can in the system.
What you have said here if anything is boosted my confidence that what I came up with for PCV is effective.
If in fact what you are saying is true then my system is working as stock. Under vacuum the check valve is opening in the head pulling out the gases in the crank case and into the intake manifold, the tube from my 3/8" breather is pulling fresh air from my turbo intake pre-turbo as it would pre-supercharger. At any rate whether changing just the orifices to some slightly larger than a coffee stirrer is hurting it I would disagree. However I do see the need for the head not to be blocked off and for the check valve to be in place to allow the boost to not enter the head but only pull gasses from it. In that case again my setup is working as gm had designed except with the addition of a catch can in the system.
What you have said here if anything is boosted my confidence that what I came up with for PCV is effective.
08-10-2013, 10:16 PM
#6415
Well guess what? It doesn't. You have very little crankcase vac thanks to your bypassing the stock fresh air CALIBRATED inlet, and the oil you're catching in your can is from blow-by, not ventilation.
I'm done with your bullshit attitude. You DON'T know what you're talking about, and no matter how much I try to dumb it down for you, you just close your eyes, plug your ears, and shout blah blah blah I'm not listening!
If anyone else wants help setting up a proper pcv for a blow-through setup, you know where the pm button is.
08-10-2013, 10:24 PM
#6416
1 page ago it was a bunch of people disagreeing with you armcclure, I spoke up and now am being a cocky *****? You guys dont know me from Adam... I could be your best best friend but it would seem the click has swayed from time to time and I take it that not everyone agrees with everyone but god forbid you disagree with someone... Oh you are a ***** you are cocky, you are blah, I just had someone on the last page that had a similar setup working for them too. The whole thing is really silly to argue over...
08-10-2013, 10:30 PM
#6418
1 page ago it was a bunch of people disagreeing with you armcclure, I spoke up and now am being a cocky *****? You guys dont know me from Adam... I could be your best best friend but it would seem the click has swayed from time to time and I take it that not everyone agrees with everyone but god forbid you disagree with someone... Oh you are a ***** you are cocky, you are blah, I just had someone on the last page that had a similar setup working for them too. The whole thing is really silly to argue over...
This is not something you can just "disagree" on. The pcv works a certain way, and THAT IS IT!
But you refuse to accept the possibility that you're wrong. You see oil in your can, and think its doing good.
This is literally as simple as you saying 2+2=5. And no matter what logic I use, you refuse to see that it's not.
08-10-2013, 10:40 PM
#6419
I know right, i would totally "like" your post that turbo spool breaks rings/ringlands. 
The oil in the can is better than the oil in your throttle body and sensors. Didnt you say the stock baffles sucked just days ago? You said it was gunking crap up. That stock sucks.
It's about the health and lifespan of your and other people's engines. Post after post I was polite and trying to help you guys understand.
This is not something you can just "disagree" on. The pcv works a certain way, and THAT IS IT!
But you refuse to accept the possibility that you're wrong. You see oil in your can, and think its doing good.
This is literally as simple as you saying 2+2=5. And no matter what logic I use, you refuse to see that it's not.
This is not something you can just "disagree" on. The pcv works a certain way, and THAT IS IT!
But you refuse to accept the possibility that you're wrong. You see oil in your can, and think its doing good.
This is literally as simple as you saying 2+2=5. And no matter what logic I use, you refuse to see that it's not.
08-10-2013, 10:47 PM
#6420
Member
iTrader: (2)
Join Date: 06-08-12
Location: Berea, Ohio
Posts: 260
Likes: 0
Received 0 Likes
on
0 Posts
No, you're being a cocky *****. Here we're trying to help and you're just sticking you're nose in the air and saying "I don't care cuz my way works"
Well guess what? It doesn't. You have very little crankcase vac thanks to your bypassing the stock fresh air CALIBRATED inlet, and the oil you're catching in your can is from blow-by, not ventilation.
I'm done with your bullshit attitude. You DON'T know what you're talking about, and no matter how much I try to dumb it down for you, you just close your eyes, plug your ears, and shout blah blah blah I'm not listening!
If anyone else wants help setting up a proper pcv for a blow-through setup, you know where the pm button is.
08-10-2013, 10:51 PM
#6421
Member
iTrader: (2)
Join Date: 06-08-12
Location: Berea, Ohio
Posts: 260
Likes: 0
Received 0 Likes
on
0 Posts
No, you're being a cocky *****. Here we're trying to help and you're just sticking you're nose in the air and saying "I don't care cuz my way works"
Well guess what? It doesn't. You have very little crankcase vac thanks to your bypassing the stock fresh air CALIBRATED inlet, and the oil you're catching in your can is from blow-by, not ventilation.
I'm done with your bullshit attitude. You DON'T know what you're talking about, and no matter how much I try to dumb it down for you, you just close your eyes, plug your ears, and shout blah blah blah I'm not listening!
If anyone else wants help setting up a proper pcv for a blow-through setup, you know where the pm button is.
08-10-2013, 10:53 PM
#6422
I know right, i would totally "like" your post that turbo spool breaks rings/ringlands.
The oil in the can is better than the oil in your throttle body and sensors. Didnt you say the stock baffles sucked just days ago? You said it was gunking crap up. That stock sucks.
Anyway, that's fine. But keep the stock port on the back of the vc so that you actually have some vac on the case when out of boost.
By drilling a hole and using a larger like you've increased airflow through the crankcase but lost vac. This is also a big vac leak that youre now forced to tine around. The oil in your can is blowby. As is the gunk on a stock tb/s inlet.
Your system is working like a stock one but is different on these ways:
Your fresh air inlet is too big. You have less case vac than stock
It is unmetered air, causing a self-made vac leak that you must tune around.
The only benefit you've made is that when your rings are trashed thanks to not having proper case vac, at least is wont pop the dipstick and make a mess thanks to your added line.
08-10-2013, 10:58 PM
#6423
I started out nice. I'm posting MUCH MORE than "I'm right you're wrong"
I've explained it over and over. And over. And people keep butting back just for the simple fact they can't accept they their way isn't the right way.
08-10-2013, 11:02 PM
#6424
Member
iTrader: (2)
Join Date: 06-08-12
Location: Berea, Ohio
Posts: 260
Likes: 0
Received 0 Likes
on
0 Posts
Well, simply put, I am right on this. It's not a subject that can be determined by opinion.
I started out nice. I'm posting MUCH MORE than "I'm right you're wrong"
I've explained it over and over. And over. And people keep butting back just for the simple fact they can't accept they their way isn't the right way.
08-10-2013, 11:10 PM
#6425
Oh all admit I'm getting a little pissed and frustrated, but you would too.
Apparently they call this place the short bus for a reason.