obx exhaust manifold notice - ZR-1 Net Registry Forums

chris90 · 10-27-2021

Hello everyone ,

i bought a 90 zr-1 with a corsa exhaust, with the original manifold, just saw this on ebay. https://www.ebay.com/itm/15252507372...YAAMXQdm5Q9unm

Has anyone already bought this exhaust manifold or do you have any advice?

thanks Chris

1991 Corvette ZR-1 · 10-27-2021

Hi Chris, I am running OBX headers. If you look around, you may be able to find a random speed shop trying to unload them for cheaper. I got my set for $450. I then sent them to Swaintech for their white lightning coating for about $350. It insulates them and helps keep the exhaust flow at a higher speed. The primary reason I got them coated was the bare stainless in the engine bay cooking everything didn?t sit well with me. I have seen pics on here of people running bare stainless headers but I wanted a little extra piece of mind.

Also, if you are not running EGR like the later ZR-1 models, there is an EGR tube on the passenger set that will need to be plugged or welded. I opted to cut it off, grind it smooth and had a local welder plug the hole. I will not say they are the greatest headers ever for an LT5, but I am pleased with them and they are weight reduction and dramatic relief on the restriction of the factory manifolds.

efnfast · 10-27-2021

Mine rub the steering shaft. Had i know i would have dimpled them before having them coated.

Starman · 10-27-2021

Buy the Stainless Works long tube headers, you will not be sorry.

Sent from my iPhone using ZR-1 Net Registry

HAWAIIZR-1 · 10-27-2021

My humble opinion is to buy American. Sorry I?m against China making copies of a US header manufacturer and selling in the US with no manufacturing laws to comply with. I don?t know if they tried to copy Stainless Works design or not, but let?s help keep the jobs in America. SW gives ZR-1 Registry members a huge discount so let?s help to keep them in business. Yes, you can spend way less, but I hate how they copy even Corsa (but they can?t replicate) their exhaust systems. The extra price is worth it and you can feel good about it.

Sent from my iPhone using ZR-1 Net Registry

32valvZ · 10-29-2021

Good quality used is always an option also.... just a thought.

chris90 · 10-30-2021

thank you all for your experience and advice.

I will wait to have the car, 2 months minimum wait

10-27-2021	#1
chris90 Join Date: May 2021 Location: france Posts: 16	obx exhaust manifold notice Hello everyone , i bought a 90 zr-1 with a corsa exhaust, with the original manifold, just saw this on ebay. https://www.ebay.com/itm/15252507372...YAAMXQdm5Q9unm Has anyone already bought this exhaust manifold or do you have any advice? thanks Chris Last edited by chris90; 10-27-2021 at 04:48 PM.

10-27-2021	#2
1991 Corvette ZR-1 Join Date: Sep 2018 Location: Florida Posts: 305	Re: obx exhaust manifold notice Hi Chris, I am running OBX headers. If you look around, you may be able to find a random speed shop trying to unload them for cheaper. I got my set for $450. I then sent them to Swaintech for their white lightning coating for about $350. It insulates them and helps keep the exhaust flow at a higher speed. The primary reason I got them coated was the bare stainless in the engine bay cooking everything didn?t sit well with me. I have seen pics on here of people running bare stainless headers but I wanted a little extra piece of mind. Also, if you are not running EGR like the later ZR-1 models, there is an EGR tube on the passenger set that will need to be plugged or welded. I opted to cut it off, grind it smooth and had a local welder plug the hole. I will not say they are the greatest headers ever for an LT5, but I am pleased with them and they are weight reduction and dramatic relief on the restriction of the factory manifolds. Last edited by 1991 Corvette ZR-1; 02-23-2024 at 11:34 PM.

10-27-2021	#3
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,537	Re: obx exhaust manifold notice Mine rub the steering shaft. Had i know i would have dimpled them before having them coated.

10-27-2021	#4
Starman Join Date: Sep 2008 Location: Speedway, IN Posts: 135	Re: obx exhaust manifold notice Buy the Stainless Works long tube headers, you will not be sorry. Sent from my iPhone using ZR-1 Net Registry

10-27-2021	#5
HAWAIIZR-1 Join Date: May 2010 Location: Japan Posts: 3,091	obx exhaust manifold notice My humble opinion is to buy American. Sorry I?m against China making copies of a US header manufacturer and selling in the US with no manufacturing laws to comply with. I don?t know if they tried to copy Stainless Works design or not, but let?s help keep the jobs in America. SW gives ZR-1 Registry members a huge discount so let?s help to keep them in business. Yes, you can spend way less, but I hate how they copy even Corsa (but they can?t replicate) their exhaust systems. The extra price is worth it and you can feel good about it. Sent from my iPhone using ZR-1 Net Registry __________________ Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048 Last edited by HAWAIIZR-1; 10-27-2021 at 11:42 PM.

10-29-2021	#6
32valvZ Join Date: Nov 2007 Location: Sunshine State Posts: 1,061	Re: obx exhaust manifold notice Good quality used is always an option also.... just a thought.

10-30-2021	#7
chris90 Join Date: May 2021 Location: france Posts: 16	Re: obx exhaust manifold notice thank you all for your experience and advice. I will wait to have the car, 2 months minimum wait