Ugh... Trying to use a 00+ EGR on a '97...

[SappySE107]

What is the casting number for that plenum?

[MantaGreen97]

Not true. I have one on my 1996 Grand Prix.

The 1999 3100 SFI upper intake manifold (LG*) came with the stock linear EGR mount.

Okay. Got pics.

This is some pics of the 1999 upper intake manifold. When I did the LG8 intake swap to my 1996 Grand Prix, the EGR bolted right up to this manifold:

Wow nice--looks like you've uncovered a little known fact. I mean it's too late for me now, lol, but that would mean a late 1999 Malibu might have had that plenum. Good info for future reference! I guess that would make it relatively rare though! Was it only the Malibu that got that or was it other 3100-equipped cars? (I.e. Could GP-base, Buick Century have had that too?)

So what I did so far was just the bolt on the back where the edge of the bolt (I used a bolt which is a bolt with the kind of built-in washer if you know what I mean) holds the tube against the EGR, like the guy on the GA forum had done. It actually holds it against the EGR surprisingly well, almost as good as if there had been a hole in the plate that lined up. I didn't use anything on the pipe (to make it larger) yet but what I did do was use the old gasket between the parts to make it fit more securely between the parts (the 00+ EGRs don't use a gasket on that side but these aren't exactly matching parts I have here, heh). Plus the pipe itself is quite rigid so I have no doubt that it's not going anywhere.

Works fine though, no MIL or anything coming on As for leaks, I can't really see anything leaking but I'll have to wait until I can pick up some more Seafoam the next time I go to the US, to see if it is/how bad it is (the white smoke is a great way to find an exhaust leak!).

[3100 MPFI]

Okay. Got pics.

This is some pics of the 1999 upper intake manifold. When I did the LG8 intake swap to my 1996 Grand Prix, the EGR bolted right up to this manifold:





And this is the 2000+ style with the EGR adapter attached to it

[3100 MPFI]

Late 1999 was when they went to the large port. That was the year of the Malibu that my engine came out of.

I will take a pic this afternoon and post it. It has the SAME EGR mount that the stock 1996 EGR had, but it is the large port.

Pics will be posted this evening.

I did not have to modify anything on the EGR for my 1996 Grand Prix when I swapped in the large port intake.

[SappySE107]

2000 was the start as far as I was aware. I have never seen a 3100 large port with the 96-99 EGR. I thought you could just use the 00 EGR with the 97 plug.

[IsaacHayes]

Hmm so was it 99 that the 3100 went to big ports?

[3100 MPFI]

There are no LG8s that had the older EGR mount.

Not true. I have one on my 1996 Grand Prix.

The 1999 3100 SFI upper intake manifold (LG*) came with the stock linear EGR mount.

I don't think I have a good pic of it, so I will get one tomorrow.

For now, and to add to the debate, here is a kinda bad pic.

[SappySE107]

Get offended, I don't give a rats ass

Im banning you for a day. All your warnings got used up when you fucked with me twice. Learn to let it go, especially when its trivial bullshit cause thats petty. We appreciate your help but we will not tolerate your attitude. next time its a week.

Well, I had a VERY difficult time following what you were trying to say, and just because you use a lot of words doesn't by any means that you can convey what you are trying to explain, and I can usually deceifer some pretty bad english, usually with ease too, your first post was just way too hard to follow with the ideas jumping back and forth from one idea to another. Also the title is as I had already stated, indicating that you were trying to use a newer EGR on an older ??? Vehicle maybe, older engine, it was still pretty vauge. Get offended, I don't give a rats ass, I only mention it due to the fact that if I had a hard time following it, I'm sure many other people would too.

Again, no reason to ghetto rig, just some research and time would show you that you can find an older 3400 UIM that is blank, in fact these are somewhat sought after items, due to the very fact that it is blank, and can be customized more easily than one that has the raised letters. I also have one, that I am toying with using, when or if I swap a 3400 into my '98 Malibu.

There is yet another reason that ghetto rigging is not needed, there are EGRs available that will fit your newer 3100 plenum, imagine that.
Now to get that tube out heat it with a torch and then you will be able to remove it. The connections at the manifolds are the same IIRC. I'm 99% sure there have only been two types of connections used at the manifold end and that was changed in generation, as in the genII has the older "flare nut" style, while the newer (genIII) all use the threaded (outside) nut, the proper names of these types of connections are just not coming to me, it's late, and the description should be good enough. If they look similar they are the same. since I believe all genIII (other than the 3500) used the same connection at the rear exhaust manifold.
Put the manifold in a vice, use some torches, heat the piss out of the manifold (not the tube nut), so that the manifold heats up and expands away from the nut, efectivly loosening it. Then using a wrench, box end if you can fit it over the other end of the tube, loosen the nut, once it's broken loose, let everything cool, and then finish removing the tube then. Sometimes when removing the nut with the manifold still hot can destroy the threads in the manifold.

[IsaacHayes]

Use some PB blaster, torch it some, I'm sure you can get that nut off some how.

Not sure if the 2000+ 3x00 egr tube would fit your manifold but probably. I know a 3500 tube wouldn't because their manifolds are a lot different. I'd have to see a picture of the 2000+ 3x00 tube.

[MantaGreen97]

Arg....

Some english lessons seem top be in order.....

Your title has no mention of UIM, just "'00+EGR" to be used on a "'97"....
And the body of your post went all over the place, and extremly hard to follow.

Actually I take offence to this just a little bit. I do appreciate you trying to help me with the EGR, but English is my first and only language; and, I am actually educated, LOL. While in university I used to write a lot of multi-thousand word essays, usually the night before or the day of, usually beating most people in my classes. In fact, where most people usually struggled to get to the word limit I always had to use word processor tricks to make my papers look shorter because I was always way over the limit...

And yeah I graduated cum laude--and I did this sleeping through perhaps 70% of my classes to boot Anyway this may all be irrelevant but I'm just mentioning it because I've actually never had anyone ever tell me my English was bad. So I sort of feel the need to defend myself on that front.

But I do apologise. The reason my first post may have seemed a little cryptic is simply because it was actually longer to start with and then I figured "wow that's pretty long, no one is going to read this" so I cut it down a bit (and it's still really long).

Anyways, the "mount description" beitween vertical and horizontle has been commonly accepted to be in refernce to the UIM itself, not the pipe connection to the EGR.

What's funny is I used to think of it that way before I was posting on here and I swear people referred to it the other way and that's how I changed. Anyway, it doesn't matter we're both talking about the same thing

Why do you not want to just use the matching EGR to the plenum or the matching plenum to the EGR, would be SO much easier than trying to modify something to work that really doesn't need to be.

Well the L82 plenum is pretty low flow compared to the LG8 and LA1 plenums. And my motor is still 3.1L... Get it? :P There are no LG8s that had the older EGR mount. So I'd have to put a 3400 plenum on my car to have the same EGR mount and though it seems maybe too technical (or perhaps even vein), I just don't want my engine to read "3400" when it isn't a 3400. Furthermore, I already got the LG8 UIM ported so I pretty much have to use it.

There's no reason to ghetto rig this, when the proper parts are easily found.

Again, there's no such thing as an LG8 UIM with the older EGR mount. Now perhaps there's the option of switching the pipe... Will the 00+ manifold to EGR pipe work on my car? There's still a problem there of course, because I can't get that pipe off for the life of me... I had the manifold on the ground, propped so it wouldn't move from the reaction to the torque applied and I pretty much jumped on the wrench and it just slipped and started to round the nut instead of turning it. So I'm guessing that's just rusted so as to form one permanent piece, and it's not coming off, LOL.

I could have cut the pipe off and then tried using a socket and breaker bar, but then what if it really was rusted into one part? Then I'd be into a manifold replacement. Of course I could try to loosen it with the exhaust at temperature--perhaps that might work. But of course I still need to know if an 00+ pipe will work on my car, which I haven't really seen confirmation of in doing a search.

Anyway all of that said, I'm pretty sure I'll get by with what I'm planning. If the guy that did it by just "hooking" the bolt on the bracket never had a problem, I doubt I will either.

Arg....

Some english lessons seem top be in order.....

Your title has no mention of UIM, just "'00+EGR" to be used on a "'97"....
And the body of your post went all over the place, and extremly hard to follow. You may know what you are trying to say, but we can't read your thoughts, this is where slowing down and putting key points and maybe even some back ground info makes it easier for those of us that don't follow each and every other persons build on a daily basis.

Anyways, the "mount description" beitween vertical and horizontle has been commonly accepted to be in refernce to the UIM itself, not the pipe connection to the EGR.

Why do you not want to just use the matching EGR to the plenum or the matching plenum to the EGR, would be SO much easier than trying to modify something to work that really doesn't need to be.

There's no reason to ghetto rig this, when the proper parts are easily found.

[MantaGreen97]

Well the post is confusing and so I went by the title "Trying to use '00+ EGR on '97".

Horizontle mount = '96 to '99

Vertical mount = '00+

There would be no need to make an adaptor for this since the EGR parts are readily available, that will match whihc ever intake is being used here.

Sorry if that was confusing, but to me it says exactly what I'm trying to do. I'm using an 00+ plenum and an 00+ EGR with it, and I'm trying to get it to work with a 1997 vehicle which has a pipe for the earlier EGR.

Also, I tend to think of it the opposite way, the '99 and prior mount vertically if you ask me (the mount is at the bottom) and the 00+ mount horizontally (since the mount is on the side).

Anyway I did hear back from the guy that put an 00+ plenum on his 96-98 GA... What he did was what I suspected, he used a bolt that pretty much held on the existing EGR pipe plate to the new EGR, by just the edge of the bolt. He said it worked for him with no issues, though I tend to think it would leak because the pipe is actually a bit smaller than the opening on the new EGR. Some Seafoam will be the judge of that I guess--always the best way to find exhaust leaks

I tried drilling through that plate but that plate is pretty thick, relatively strong and so that didn't get me far with a hand drill, lol. So I'm just going to take the same route as the guy above (unless there is an adapter available someplace).

Does anyone know if muffler tape can handle that temperature? If not how about some header/manifold wrap tape? That should work... What I intend to do is just wrap a small piece of that around the pipe and then it would be more snug and make a better seal in the EGR.

Well the post is confusing and so I went by the title "Trying to use '00+ EGR on '97".

Horizontle mount = '96 to '99

Vertical mount = '00+

There would be no need to make an adaptor for this since the EGR parts are readily available, that will match whihc ever intake is being used here.

[IsaacHayes]

Raven, I think you got his setup backwards. He has a 97 and trying to put a 2000+ UIM on.