All;


I've recently acquired the correct exhaust manifolds for my '88 L98 Camaro, but have encountered a small problem. The passenger side manifold doesn't have the provision to connect the manifold to the "Y" pipe.


From what I understand, the same manifolds were used in other cars that utilized a heat riser on the passenger side, but the TPI cars did not, so a spacer the same size/diameter as the heat riser were used.


Does anyone know exactly what part/part number I'm looking for, so I can install the manifolds on my car?


I've enclosed a pic I took from another posting on the forum, you can see the lower manifold is completely flat, and there is no flange for the "Y" pipe to seal to.

 

You are correct it's just a small block to take up the space of the heat riser valve. I can look tonight to see if I still have mine. Not sure if I sold it or not...

 

Probably not going to get too far with the part number, I'm sure it's long since discontinued... Parts stores will show an exhaust donut in the catalog, which might be workable in a pinch. Easiest would just to put a want ad in the classifieds here.

 

I just got the manifolds yesterday, I've approached the seller to see if he might still have the spacer.


If not, I'm definitely going to need one. Thanks for the pic, that helps a good bit.

 

You can make one out of the valve for a car that uses that.

Remove the shaft & diaphragm, tap the shaft holes for 1/8" pipe plugs, install said plugs, grind the bore out so that it's not a restriction if necessary, done.

 

I emailed the seller--he's not sure if he has the spacer or not...if not, I guess I'll put a "parts wanted" posting on the forum.


I'm eager to get rid of the oddball mid '70's exhaust manifolds someone stupidly put on the car before it was mine.

 

http://www.ebay.com/itm/1985-1992-Ca...tY4RGo&vxp=mtr

 

I nearly bought that last night..thanks for the link!

Decided to try one of my favorite junkyards, and there was an '88 IROC.

Imagine my surprise to find the passenger side Y-pipe unbolted already, and the spacer just hanging there--I didn't even have to break out a wrench.

I was charged a whole $2.00 for it.

 

Cant beat that!

 

I almost took the y-pipe, too...but think I might be better off with a Dynomax 3" pipe, rather than putting an old one under mine..