1990 Exhaust Manifold Passenger Side Flange??? - ZR-1 Net Registry Forums

Blue Flame Restorations · 04-26-2011

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 · 04-26-2011

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 · 04-26-2011

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

http://www.autopartsdealer.com/magna..._content=rank6

Blue Flame Restorations · 04-26-2011

Quote:

Originally Posted by 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

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 · 04-26-2011

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

Blue Flame Restorations · 04-26-2011

Quote:

Originally Posted by LGAFF

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.

LGAFF · 04-26-2011

Mine shows just a slip fit on the P/S

ZR-91 · 10-12-2012

Quote:

Originally Posted by dscott

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?

rhipsher · 04-27-2011

This is what it looks like on mine.

Blue Flame Restorations · 04-27-2011

Quote:

Originally Posted by rhipsher

This is what it looks like on mine.

Cool. Thanks! Collector with a clamp.

04-26-2011	#1
Blue Flame Restorations Join Date: Feb 2010 Location: Pendleton, IN Posts: 3,899	1990 Exhaust Manifold Passenger Side Flange??? 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 __________________ 1988 KOH Prototype EX5023 sold 1990 ZR-1 #444 Convertible 1990 ZR-1 Black #966 1991 ZR-1 Quazar Blue #296 1957 Duntov SS Project Last edited by Blue Flame Restorations; 04-26-2011 at 07:57 PM.

04-26-2011	#2
dscott Join Date: Feb 2009 Location: SC Posts: 17	Re: 1990 Exhaust Manifold Passenger Side Flange??? 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

04-26-2011	#3
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 1990 Exhaust Manifold Passenger Side Flange??? You probably need a ball flange....I had to set that up on my 90 also http://www.autopartsdealer.com/magna..._content=rank6 __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

04-26-2011	#5
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 1990 Exhaust Manifold Passenger Side Flange??? The ball would go into that flange...pic would help __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

04-26-2011	#7
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 1990 Exhaust Manifold Passenger Side Flange??? Mine shows just a slip fit on the P/S __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

04-27-2011	#9
rhipsher Join Date: Aug 2008 Location: Houston, TX Posts: 2,314	Re: 1990 Exhaust Manifold Passenger Side Flange??? This is what it looks like on mine.