EGR valve question

[Ruflyf]

Well I have been having problems with my 22mm nut working its way loose on my EGR and cant seem to get it tight enough to make it stay, and I REALLY dont want to put locktite or something on it. The problem is accessability, I just cant get to it well enough, even bought a set of wrenches like brake line wrenches (forgot the real name). SO my question is, does anyone know if the EGR and the pipe that leads to the exhaust manifold be installed as one piece? In other words removed, tightened properly, then installed together. If looks like it would be real close, would have to remove the bracket that bolts to the valve cover and holds a a/c line along the firewall. Which brings me to my next question, think removing one valve cover bolt, then reinstalling it would cause a leak? Anyone done it?

[mbeach]

A stubby wrench will get in there. It will require some contortion on your part however.

The upper intake manifold appears to be "sandwiched" between the valve and the tube, so no, you wouldn't be able to remove it. Keep in mind that this was originally assembled outside of the engine bay, so there's not a lot of consideration for owner/mechanics to get their hands in there.

Since you have a problem with the nut continuously loosening, you might want to check for proper assembly and sources of vibration. Is the EGR tube loose at both ends or vibrating excessively when running?

[Hotsauce]

get it tight cold, then warm up the engine, once its good and hot, put the 22mm wrench on the nut, and tap it a few times with a mallet, that will make it tight. Loctite would burn off anyway.

John C.

[Ruflyf]

Hotsauce,
dont think I could get a wrech on it well enough to use a mallet. But thats good to know about the locktite.

Mbeach,
I think the EGR block was machined by Nazrat before I bought it if I remember correctly, and it seems to do very good if I could just get it tightened up. Its not vibrating excessively or anything and both other ends seem tight, its a matter of getting to it I think, also mine is s/c'd so that may make the intake tube you mentioned a little different. A stubby may work, will have to take another look, is it definately a 22mm? Its hard for me to even get good a solid grip on the nut with regular length wrenches.

here are some pics of mine, I am pretty sure the upper pipe wont be a problem. The lower pipe looks like it would follow through if the bracket on the back valve cover bolt was removed. I will try the stubby first though, will have to go buy one lol. I think I have everything else but what I need.

[Ldub]

A few things I know:

1. that looks to be the "OE" egr block that comes w/ the s/c kit.

2. Maybe loc-tite burns off,but... I was having the same problem last fall on my way back from the Badlands meet. After I got home I put some loc-tite on the threads & cranked it down as hard as I could while fairly warm.

3. It hasn't come loose since.

4. A 22mm stubby from Sears is your friend & should spend the rest of it's life in your glove box.

[Hotsauce]

The OEM block is part of the manifold, its cast in.

John C.