Part identification
Thread Starter
7th Gear
Joined: Jun 2017
Posts: 7
Likes: 0
Part identification
car newbie here. I recently bought high profile valve covers and came across this part not fitting right because it needs to be higher or smaller. The thing is I have no idea what it is and if different fittings are available
Melting Slicks
Joined: Dec 2016
Posts: 3,193
Likes: 184
From: Central Bucks County, Pennsylvania
For now you have a un-connected positive crankcase vent that is usually connected to the base of the original air cleaner and most after market open filter assemblies. From your picture don't show an original Aircleaner assembly. You may need a new hose to fit now that the valve covers are higher but confirm that you have a connection point under your present air cleaner and see where you are at. Take a few good pictures so that we can help you along.
Last edited by Z06LMB; Jun 11, 2017 at 02:04 PM.
Thread Starter
7th Gear
Joined: Jun 2017
Posts: 7
Likes: 0
This would be a good time to point out how valuable and handy a Assembly Manual or AIM can be to illustrate parts and the order of assembly.
For now you have a un-connected positive crankcase vent that is usually connected to the base of the original air cleaner and most after market open filter assemblies. From your picture don't show an original Aircleaner assembly. You may need a new hose to fit now that the valve covers are higher but confirm that you have a connection point under your present air cleaner and see where you are at. Take a few good pictures so that we can help you along.
For now you have a un-connected positive crankcase vent that is usually connected to the base of the original air cleaner and most after market open filter assemblies. From your picture don't show an original Aircleaner assembly. You may need a new hose to fit now that the valve covers are higher but confirm that you have a connection point under your present air cleaner and see where you are at. Take a few good pictures so that we can help you along.
Team Owner
Joined: Sep 2006
Posts: 31,110
Likes: 4,174
From: Westminster Maryland
Hi 80,
Welcome!
First post!!!
As Z06 mentions that tube is part of the crankcase breather.
I agree with him that you're no-fit situation is caused by the air cleaner being used, not the valve covers.
You may be able to use the present base with the proper tube and hose or you may need a new air cleaner base too.
Regards,
Alan
Here's an example of the breather entering the bottom of the base. There are some that enter the rear 'face' of the air cleaner.
Here's a photo showing the air cleaner connection for the breather tube in your post.
Welcome!
First post!!!
As Z06 mentions that tube is part of the crankcase breather.
I agree with him that you're no-fit situation is caused by the air cleaner being used, not the valve covers.
You may be able to use the present base with the proper tube and hose or you may need a new air cleaner base too.
Regards,
Alan
Here's an example of the breather entering the bottom of the base. There are some that enter the rear 'face' of the air cleaner.
Here's a photo showing the air cleaner connection for the breather tube in your post.
Last edited by Alan 71; Jun 11, 2017 at 02:56 PM.
Melting Slicks
Joined: Dec 2016
Posts: 3,193
Likes: 184
From: Central Bucks County, Pennsylvania
80, do you mean that round silver thing?
That's an EGR valve, it recycles exhaust gases, in this case from the crank case back in through the intake system for reburnng.
A very common part if you ever need to replace. Usually around $55 at any parts stores.
That's an EGR valve, it recycles exhaust gases, in this case from the crank case back in through the intake system for reburnng.
A very common part if you ever need to replace. Usually around $55 at any parts stores.
Last edited by Z06LMB; Jun 11, 2017 at 03:18 PM.
Melting Slicks
Joined: Dec 2016
Posts: 3,193
Likes: 184
From: Central Bucks County, Pennsylvania
Do you have any problems and think the egr could be the culprit or did you just want to know what it is?
An EGR valve that won't open when it is supposed to will cause high NOx emissions. An EGR valve that won't close when it is supposed to will cause rough idle and/or engine dies. The most common failures would be carbon buildup keeping it from closing or a leak in the vacuum line or diaphram keeping it from opening. When not working you can get higher combustion chamber temps which could lead to pinging. One way to test is to spray some carb or brake cleaner under the valve and listen for any change in the idle. If so, you have a vacuum leak at that point.
An EGR valve that won't open when it is supposed to will cause high NOx emissions. An EGR valve that won't close when it is supposed to will cause rough idle and/or engine dies. The most common failures would be carbon buildup keeping it from closing or a leak in the vacuum line or diaphram keeping it from opening. When not working you can get higher combustion chamber temps which could lead to pinging. One way to test is to spray some carb or brake cleaner under the valve and listen for any change in the idle. If so, you have a vacuum leak at that point.
Burning Brakes
Joined: Feb 2017
Posts: 1,054
Likes: 212
From: Kissimmee Florida
Good luck !
Melting Slicks
Joined: Dec 2016
Posts: 3,193
Likes: 184
From: Central Bucks County, Pennsylvania
Man If only I could read sometimes. Now I understand.
My knowledge is too limited to advise you on elimination of the egr on a 1980 350. That 17064059 is original I side with keeping it. I'm sure someone here knows how to get around this problem.
My knowledge is too limited to advise you on elimination of the egr on a 1980 350. That 17064059 is original I side with keeping it. I'm sure someone here knows how to get around this problem.
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Melting Slicks
Joined: Dec 2016
Posts: 3,193
Likes: 184
From: Central Bucks County, Pennsylvania
My question is - isn't it asking for problems if you simply eliminate the EGR?
Thread Starter
7th Gear
Joined: Jun 2017
Posts: 7
Likes: 0
Yes Z06 I bought taller covers but the EGR is too big and wont go down all the way without displacing the covers. I wanted to know the part so I could look for a smaller replacement. You gave great advice and even found a problem I didn't know about. Thank you! I am VERY new to cars so anything helps!
