PontiacBonnevilleClub.com

Maybe someone on here can answer this question that been bugging me for a while. I know there is an aftermarket exhaust manifold for my 93 SSEi (the left or front manifold with crossover and heat shields Dorman# 674-577) but has anyone ever seen an aftermarket right or rear exhaust manifold? I had heard that they are notorious for cracking. I know ZZP makes a ported rear manifold and a power log for turbo but I dont know if they fit my S/C engine.

The zzp parts will NOT fit your car. Totally different for the Series 2 than your Series 1.

I'd like a link to the dorman replacement you're talking about.

It's listed on Rock Auto. $278.79!

Wow, that's a good find. I had to repair the front EM on the 94 last year. It was cracked bad!
The rear one was fine though.

When repaired or crack free, they flow almost as well as true headers.

If you remove it yourself, repairing cracks is cheaper than buying new.

Notice the uneven spacing on the 3 runners? That's why you can't run the ZZP S2 parts. They have even port spacing, we have Grand National stagger.

The crack repairs cost me $100.

And that's canadian $.

In a small town.

This might be a question for RockAuto. How does this manifold differ from the OEM?

For sure. I wonder if that's an O2 sensor bung that I see in the picture?

It looks capped. Probably a threaded cap.

EGR port.

Here ya go will...that link

https://www.dormanproducts.com

Hmm, they list a rear for 92. I don't see why it wouldn't fit with the listed 93 front.

https://www.dormanproducts.com/cgi-bin/ ... ry_list=:0

Some 92's came with a separate crossover, so the mating flange on the rear would be different. There was something else different about the 92 rear that I don't recall now too.

I thought they were the same in how they mounted together... I need to dig my spares out anyway, and can compare 92 to 93.