pcv amw catch can?
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
I have a 2004 C5 and just bought a AMW can.
I don't see an external PCV in the short loop hose from valley to intake. I believe as posted elsewere it is internal for this year.
Anyways.....You guys don't seem to be agreeing which hoses go where on the catch can.
It seems to me that the hose from the top of the can should go to the intake. As oil fills in the bottom of the can it would get sucked into the intake if that hose were connected to the bottom.
Am I missing something.....
DH
I don't see an external PCV in the short loop hose from valley to intake. I believe as posted elsewere it is internal for this year.
Anyways.....You guys don't seem to be agreeing which hoses go where on the catch can.
It seems to me that the hose from the top of the can should go to the intake. As oil fills in the bottom of the can it would get sucked into the intake if that hose were connected to the bottom.
Am I missing something.....
DH
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
1) Valley cover nipple to the top of the catch can
2) Side of catch can to Intake.
ALL LS1/LS6 motors have an external pcv valve..
BTW, When people say the "Bottom" hose on the catch can, its not literally on the bottom. Its about 3/4 of an inch from the top of the can, and about 5" off the bottom. The top line on the catch can is directly on the top portion of the cap..
2) Side of catch can to Intake.
ALL LS1/LS6 motors have an external pcv valve..
BTW, When people say the "Bottom" hose on the catch can, its not literally on the bottom. Its about 3/4 of an inch from the top of the can, and about 5" off the bottom. The top line on the catch can is directly on the top portion of the cap..
Last edited by Jeff @ TPE; Sep 13, 2005 at 10:28 PM.
Pro
Joined: Jun 2005
Posts: 529
Likes: 0
From: North Carolina
Originally Posted by AMERICAN_HP
ALL LS1/LS6 motors have an external pcv valve..
Last edited by H20Vette; Sep 13, 2005 at 11:11 PM.
Melting Slicks
Joined: Jul 2004
Posts: 2,507
Likes: 0
From: Wilmington Ca.
Originally Posted by Dirty Howie
I have a 2004 C5 and just bought a AMW can.
I don't see an external PCV in the short loop hose from valley to intake. I believe as posted elsewere it is internal for this year.
Anyways.....You guys don't seem to be agreeing which hoses go where on the catch can.
It seems to me that the hose from the top of the can should go to the intake. As oil fills in the bottom of the can it would get sucked into the intake if that hose were connected to the bottom.
Am I missing something.....
DH
I don't see an external PCV in the short loop hose from valley to intake. I believe as posted elsewere it is internal for this year.
Anyways.....You guys don't seem to be agreeing which hoses go where on the catch can.
It seems to me that the hose from the top of the can should go to the intake. As oil fills in the bottom of the can it would get sucked into the intake if that hose were connected to the bottom.
Am I missing something.....
DH
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
AmericanHP: Thanks for the info on the side fitting on the can. I didn't realize it was 5 inches from the botom.....now it makes sense to me.
H20vette: I agree with you. I have a very short loop from valley to intake with no PCV valve present
Frank: The can I understand....its just which end goes where....and now I got that. But we were talking about sucking vs. blowing of the line that goes from the valve cover to the TB or AirBridge depending on LS1 or LS2. You and Paul had opposite views. I believe that oil fumes are sucked out of the valve cover tube into the TB and is another source of oil into the engine. I believe you said that air is forced into the valve cover thru this tube. What say you.........
DH
H20vette: I agree with you. I have a very short loop from valley to intake with no PCV valve present
Frank: The can I understand....its just which end goes where....and now I got that. But we were talking about sucking vs. blowing of the line that goes from the valve cover to the TB or AirBridge depending on LS1 or LS2. You and Paul had opposite views. I believe that oil fumes are sucked out of the valve cover tube into the TB and is another source of oil into the engine. I believe you said that air is forced into the valve cover thru this tube. What say you.........
DH
Melting Slicks
Joined: Jul 2004
Posts: 2,507
Likes: 0
From: Wilmington Ca.
Originally Posted by Dirty Howie
AmericanHP: Thanks for the info on the side fitting on the can. I didn't realize it was 5 inches from the botom.....now it makes sense to me.
H20vette: I agree with you. I have a very short loop from valley to intake with no PCV valve present
Frank: The can I understand....its just which end goes where....and now I got that. But we were talking about sucking vs. blowing of the line that goes from the valve cover to the TB or AirBridge depending on LS1 or LS2. You and Paul had opposite views. I believe that oil fumes are sucked out of the valve cover tube into the TB and is another source of oil into the engine. I believe you said that air is forced into the valve cover thru this tube. What say you.........
DH
H20vette: I agree with you. I have a very short loop from valley to intake with no PCV valve present
Frank: The can I understand....its just which end goes where....and now I got that. But we were talking about sucking vs. blowing of the line that goes from the valve cover to the TB or AirBridge depending on LS1 or LS2. You and Paul had opposite views. I believe that oil fumes are sucked out of the valve cover tube into the TB and is another source of oil into the engine. I believe you said that air is forced into the valve cover thru this tube. What say you.........
DH
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
Originally Posted by H20Vette
No, the '04 LS1s do NOT have an external PCV. Look at my picture below ('04 LS1 coupe). There is no external PCV. The '04 LS1 has a internal PCV setup with no external PCV valve. From what other forum members have told me, I believe the '04 LS6 motors are the same, but I have not personally seen one to verify. To install the catch can on an '04 LS1, you pull off the "loop" hose that runs from the intake to crankcase. It is only about 2 inches long because the crankcase outlet is right beside the intake one on the '04 LS1. Then you hook the lines to the AMW can up just like in my picture below.
100% of ALL C5 Corvettes have a PCV valve
Here is a 2004 LS1 PCV Valve (As Per my GM Database)
Here is a 2004 LS6 PCV Valve (As per my GM Database)
Hope this helps..
This information is obtained DIRECTLY from my GM Dealer website. Not some reproduction of a service manual
Last edited by Jeff @ TPE; Sep 14, 2005 at 03:54 AM.
Pro
Joined: Jun 2005
Posts: 529
Likes: 0
From: North Carolina
Nope, 100% do not have them. The one sitting in my garage does not. That picture is not what my car looks like. Look at the pics I posted above and see if you can find a PCV. If those pics you posted are really from an '04, they must have changed it during the model year (mine is one of the later ones) or screwed up and not put one on my car. Other forum members have also posted that their '04 does not have an external PCV, however, so I am sure the change was intentional.
Originally Posted by AMERICAN_HP
I'm sorry to tell you this but your wrong
100% of ALL C5 Corvettes have a PCV valve
Here is a 2004 LS1 PCV Valve (As Per my GM Database)
Here is a 2004 LS6 PCV Valve (As per my GM Database)
Hope this helps..
This information is obtained DIRECTLY from my GM Dealer website. Not some reproduction of a service manual
100% of ALL C5 Corvettes have a PCV valve
Here is a 2004 LS1 PCV Valve (As Per my GM Database)
Here is a 2004 LS6 PCV Valve (As per my GM Database)
Hope this helps..
This information is obtained DIRECTLY from my GM Dealer website. Not some reproduction of a service manual
Last edited by H20Vette; Sep 14, 2005 at 08:23 AM.
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Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
Originally Posted by H20Vette
Nope, 100% do not have them. The one sitting in my garage does not. That picture is not what my car looks like. Look at the pics I posted above and see if you can find a PCV. If those pics you posted are really from an '04, they must have changed it during the model year (mine is one of the later ones) or screwed up and not put one on my car. Other forum members have also posted that their '04 does not have an external PCV, however, so I am sure the change was intentional.
OK OK I give in.. You have a special car that doesnt require a PCV system.I am willing to bet ANY amount of money that it came with one.
THEY HAVE NEVER DELETED THE PCV SYSTEM..
I have worked for GM almost ALL of my Adult life. I would hope I knew this..
Safety Car
Joined: Jun 2004
Posts: 4,353
Likes: 22
From: Bella Vista Ca
All of this made me get up from the computer and see what mine looks like.... Mine has the line shown but there is not anything installed on the line. It is just a simple flexable hose.
Car was built 12/03
Car was built 12/03
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
Originally Posted by AMERICAN_HP
OK OK I give in.. You have a special car that doesnt require a PCV system.I am willing to bet ANY amount of money that it came with one.
THEY HAVE NEVER DELETED THE PCV SYSTEM..
I have worked for GM almost ALL of my Adult life. I would hope I knew this..
I believe in some of our cars it is not connected externally in a hose line but within the valley cover.
What do you think......
DH
Melting Slicks
Joined: Jul 2004
Posts: 2,507
Likes: 0
From: Wilmington Ca.
Originally Posted by Dirty Howie
I think you are right....there must be a PCV valve/system.
I believe in some of our cars it is not connected externally in a hose line but within the valley cover.
What do you think......
DH
I believe in some of our cars it is not connected externally in a hose line but within the valley cover.
What do you think......
DH
Last edited by frank dupuy; Sep 14, 2005 at 10:53 PM.
Pro
Joined: Jun 2005
Posts: 529
Likes: 0
From: North Carolina
Originally Posted by Mike04
All of this made me get up from the computer and see what mine looks like.... Mine has the line shown but there is not anything installed on the line. It is just a simple flexable hose.
Car was built 12/03
Car was built 12/03
Last edited by H20Vette; Sep 14, 2005 at 08:59 PM.
Pro
Joined: Jun 2005
Posts: 529
Likes: 0
From: North Carolina
Originally Posted by AMERICAN_HP
OK OK I give in.. You have a special car that doesnt require a PCV system.I am willing to bet ANY amount of money that it came with one.
THEY HAVE NEVER DELETED THE PCV SYSTEM..
I have worked for GM almost ALL of my Adult life. I would hope I knew this..
I never said it didn't have a PCV system, just that it doesn't have an EXTERNAL one. It is internal somehow or another. Look at my picture above and tell me where you see a PCV valve.
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
Originally Posted by H20Vette
I never said it didn't have a PCV system, just that it doesn't have an EXTERNAL one. It is internal somehow or another. Look at my picture above and tell me where you see a PCV valve.
I will say this though. 100% of ALL C5 corvettes that leave the plant of GM, have a (External) PCV Valve. Whether you believe me or not is up to you.
Obviously what ever you do as a profession, you have more inside knowledge of a Corvette than I do as an employee of GM.
If you car does not have an external PCV valve (or check valve of some sort) I suggest you get one, cause its only a matter of time that you will need a new motor..
BTW, There is no such thing as an "Internal" pcv valve.
Former Vendor
Joined: Feb 2004
Posts: 10,876
Likes: 8
From: Las Vegas NV
St. Jude Donor '06 & '12
I just pulled this Removal/Installation instruction guide directly off of (GMdealerworld) This is a site that is given to ALL GM service depts so that they can service the cars. As you can see It talks about removing the PCV valve off of the PCV hose that is connected to the valley cover and Intake.
I cant show you any more/better than this. THIS is how your car came from the factory..
I cant show you any more/better than this. THIS is how your car came from the factory..
Document ID# 954931
2004 Chevrolet Corvette
--------------------------------------------------------------------------------
Positive Crankcase Ventilation (PCV) Valve Replacement (LS6 Engine)
Removal Procedure
Remove the positive crankcase ventilation (PCV) valve hose (1) from the intake manifold.
Remove the positive crankcase ventilation (PCV) valve hose (1) from the valley cover.
Remove the PCV valve from the valve hose.
Installation Procedure
Install the PCV valve to the valve hose.
Install the PCV valve hose (1) to the valley cover.
Install the PCV valve hose (1) to the intake manifold.
--------------------------------------------------------------------------------
Document ID# 954931
2004 Chevrolet Corvette
2004 Chevrolet Corvette
--------------------------------------------------------------------------------
Positive Crankcase Ventilation (PCV) Valve Replacement (LS6 Engine)
Removal Procedure
Remove the positive crankcase ventilation (PCV) valve hose (1) from the intake manifold.
Remove the positive crankcase ventilation (PCV) valve hose (1) from the valley cover.
Remove the PCV valve from the valve hose.
Installation Procedure
Install the PCV valve to the valve hose.
Install the PCV valve hose (1) to the valley cover.
Install the PCV valve hose (1) to the intake manifold.
--------------------------------------------------------------------------------
Document ID# 954931
2004 Chevrolet Corvette
