One more EGR Removal Question...
Thread Starter
Racer
Joined: Feb 2004
Posts: 445
Likes: 1
From: Atlanta GA
One more EGR Removal Question...
I see a lot in the archives dealing with EGR removal, but I have one question that I couldn't find the answer to:
I just purchased the two different EGR block-off plates from TPIS for my 1989 L98. If I understand correctly, one plate blocks off the EGR valve and the smaller plate blocks off the EGR feed tube. My mechanic just called me and was wondering what everyone uses to block off the line at the exhaust manifold. He says that if we blocked the valve and the feed tube off and NOT the line that runs into the exhaust manifold, there would be an exhaust leak. What have you guys done to block off the line?
Thanks!!
I just purchased the two different EGR block-off plates from TPIS for my 1989 L98. If I understand correctly, one plate blocks off the EGR valve and the smaller plate blocks off the EGR feed tube. My mechanic just called me and was wondering what everyone uses to block off the line at the exhaust manifold. He says that if we blocked the valve and the feed tube off and NOT the line that runs into the exhaust manifold, there would be an exhaust leak. What have you guys done to block off the line?
Thanks!!
Last edited by Midnight89; May 24, 2005 at 08:45 AM.
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 250
From: Summerland B.C. Canada
I mig welded a nickle over the hole. The EGR tube comes off of the top of the exhaust manifold and into the intake. Once the tube is gone you have 2 holes to fill. Add the diaphram and thats 3.
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Some guys just cap off the manifold air tubes with a brass cap screwed into where the AIR tube check valve (Point A) is and some teflon tape on the threads. You can find a good cap at a local hardware store.
The EGR port( Point B) can be sealed by welding something over it like mentioned above if you have the non bolt flage style (post 87?). Another way is to cut off the air tubes from the manifolds and weld the holes shut. There are other methods to do it, I'm sure others will chime in with more ways.
The EGR port( Point B) can be sealed by welding something over it like mentioned above if you have the non bolt flage style (post 87?). Another way is to cut off the air tubes from the manifolds and weld the holes shut. There are other methods to do it, I'm sure others will chime in with more ways.
Last edited by 86PACER; May 23, 2005 at 08:38 PM.
Burning Brakes
Joined: Apr 2004
Posts: 859
Likes: 7
From: Spring Texas
St. Jude Donor '05
What he is talking about is a flange that is similar (in shape) to the plate that goes on the intake.
We bought some aluminum stock at Home Depot and used the tube for a template - drilled the holes and then grinded the edges to match the radius of the flange - Put a gasket on w/ high temp RTV and bolted it down
We even used the orig. bolts to bolt it down - works like a charm!
Hope this helps
We bought some aluminum stock at Home Depot and used the tube for a template - drilled the holes and then grinded the edges to match the radius of the flange - Put a gasket on w/ high temp RTV and bolted it down
We even used the orig. bolts to bolt it down - works like a charm!
Hope this helps
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Indeed the bolt flange and gasket method will work good if you have the later bolt flage EGR tube fitting. (Post 87?) The earlier ones simply had a crimp style clamp holding it on. These might need a cap welded on.
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Originally Posted by 65coop
We bought some aluminum stock at Home Depot and used the tube for a template - drilled the holes and then grinded the edges to match the radius of the flange - Put a gasket on w/ high temp RTV and bolted it down
That is maybe the better way to do in on those later style 2 bolt EGR tube flanges (post 87?). It also enables you to switch right back to stock if the need arises.
Last edited by 86PACER; May 23, 2005 at 08:44 PM.
Burning Brakes
Joined: Apr 2004
Posts: 859
Likes: 7
From: Spring Texas
St. Jude Donor '05
Originally Posted by wht_slvr_86
just curious, what is the advantage of doing this? wondering because i think i bent the tube removing the valve covers.
If you look at the pic 86PACER posted - the plate goes over the flange at "B" and the tube is removed
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