1990 Exhaust Manifold Passenger Side Flange???

[Blue Flame Restorations]

I'm trying to install the drivetrain into EX5023 and have a question.

I have 1990 exhaust and there is a flange on the passenger side of the exhaust. There is NO FLANGE on the exhaust manifold. HOW DO THE TWO ATTACH???????????

Does anyone have a picture of the two pieces mating together?

It seems that there would be a sleeve with a triangular flange attached that would clamp to the exhaust manifold and then attach to the traingular flange on the exhaust. If so, I would like to buy one from someone.

Thanks
Brett

[dscott]

Brett,
It seems like you are missing part of the exhaust manifold. The two should mate up together with a gasket between them. The gasket part # is 10147973 from GM. I'm not sure if this is still available. If it not I have a couple available.
Hope this helps, Dennis

[LGAFF]

You probably need a ball flange....I had to set that up on my 90 also

http://www.autopartsdealer.com/magnaflow_exhaust_pipes_flanges__turn_downs-p415187-p.html?utm_source=bing&utm_medium=cse&utm_campaign=cp50&utm_content=rank6

[Blue Flame Restorations]

Brett,
It seems like you are missing part of the exhaust manifold. The two should mate up together with a gasket between them. The gasket part # is 10147973 from GM. I'm not sure if this is still available. If it not I have a couple available.
Hope this helps, Dennis


Thanks Dennis. Lee, the driver's side has a ball flange but the passenger side exhaust pipe just has the triangular flange. I can see on the flange where a gasket has been. It looks like a I need a sleeve with a flange welded to it to go onto the CAT. The sleeve would attach with a clamp.

Does anyone know if this is how the stock setup is?

[LGAFF]

The ball would go into that flange...pic would help

[Blue Flame Restorations]

The ball would go into that flange...pic would help

Here is what I have o work with, so far.

I have a ball flange on the driver's side of the CAT with the matching type of ball flange on the pipe exhaust. They meet up good. The flange on the passenger side exhaust pipe is "flat" flange though. Not a ball type. It's had a gasket on it before as well for another flat flange. Hope this helps???

Someone surely has a pic of the flange on the CAT??

Like this. You can see the flange and sleeve.
http://i53.tinypic.com/72t2s7.jpg

[LGAFF]

Mine shows just a slip fit on the P/S

[Blue Flame Restorations]

Here is a pic of the CAT that looks like miine. My CAT does slip into the pipes but what would hold it besides the triangular flange? A clamp, maybe?

http://i54.tinypic.com/2801w5j.jpg

[LGAFF]

Another TRiagle held in place by a flared pipe for DS

http://i134.photobucket.com/albums/q115/lgaff/DSCN3809.jpg

[Blue Flame Restorations]

Thats a 93-95 Ps Manifold

That must be the problem. I'll have to have a sleeve/flange fabbed up at the muffler shop.

Thanks, Lee!!

[LGAFF]

band clamp on the slip fit or PS

http://i134.photobucket.com/albums/q115/lgaff/DSCN3810.jpg

[Blue Flame Restorations]

band clamp on the slip fit or PS

http://i134.photobucket.com/albums/q115/lgaff/DSCN3810.jpg


Where can I get one of those band clamps???

[LGAFF]

Brett, I could only see the manifold in the truck, looked like it had no cat....but the ones mounted are correct 90

Sorry

[LGAFF]

Any Auto store; ask for a band clamp

[Blue Flame Restorations]

The pic of the ones mounted are not of my car but the pass manifold is just like mine.

[Blue Flame Restorations]

Any Auto store; ask for a band clamp


Cool. I've honestly never seen one and I used to run an DC for an auto parts cahin. Auto Works, back in the 80's, now defunct.

[LGAFF]

OREilly and Advanced have them I think LEE also.....

[Blue Flame Restorations]

Once again, the FBI guys are on it!

Thanks, Lee!

[Pete]

All 1990-1991 have a ball end on driver side and triangle flat flange on passenger side.

Lee has a 1992 they have the slip fit on the passenger side.

Pete

[Blue Flame Restorations]

UPDATE

Marc Haibeck has the missing piece for me to purchase.

Thanks for everyone's input. Much appreciated.

Brett

[rhipsher]

This is what it looks like on mine.
http://i301.photobucket.com/albums/nn63/keeno1970/Clutchjob018.jpg

[Blue Flame Restorations]

This is what it looks like on mine.
http://i301.photobucket.com/albums/nn63/keeno1970/Clutchjob018.jpg


Cool. Thanks! Collector with a clamp.

[LGAFF]

All 1990-1991 have a ball end on driver side and triangle flat flange on passenger side.

Lee has a 1992 they have the slip fit on the passenger side.

Pete

Those pics are of my 90

[mike100]

Some of the larger diameter cat-back exh systems had a slip over pipe with a triangular flange. My car came with a 3" B&B setup and had a 2-3/4's adapter pipe to a 3" flange. It was welded permanently.

I had to have a mating flange welded up on my Corsa. I prefer it this way anyhow because the slip fit might leak or be difficult to align at some point.

[Pete]

Those pics are of my 90

Lee, previous owner probably took it off.

Pete

[rhipsher]

When my cats went bad and I had to replace both manifolds I had to beat that collector/flange with a rubber mallet damn near 100 times before I got it off. That thing was on there good.

[HAWAIIZR-1]

Hello Brett,

I just found this after posting a WTB for this part you were looking for too. Were you able to the part you needed from Marc? It seems just like a typical header collector, but I don't find it in 3" to 2.75"; maybe I just get one of those and open up the 3" to
2.5" to 2.75" to slip over the pipe?

Thanks,

Craig

[ZR-91]

Brett,
The gasket part # is 10147973 from GM. I'm not sure if this is still available. If it not I have a couple available.
Do anyone know where to get this gasket?