Headers: Wrap or not? Coat or not? - ZR-1 Net Registry Forums

MuRCieLaGo · 03-18-2016

Hi,

I just received my OBX headers. Should I have them coated? Wrapped?

I found this:

What do you guys think?

Paul Workman · 03-18-2016

They're stainless, of course; like my SWs. And for the life of me I couldn't see any demonstrably significant reason to paint or coat them - aside from possibly one of cosmetics. But, I'm NOT a WAXER either (not that the headers of an LT5 do more than barely peek out between the heads and the frame rail anyway!)

A show car = yes (I guess)
A warrior? Meh...

YMMV

Gunny · 03-18-2016

I've had SW long tubes on the Z for well over 10 years. When I installed them the current "wisdom" & recommendation was to coat them ... which I did. Honestly, if I were doing it today, I would leave them stainless and save the $$$ to use somewhere else. Not that I dislike having coated headers or think they are better or worse but I would be just as happy with the original stainless look.

MuRCieLaGo · 03-18-2016

My car is definitely a warrior, not a show car. So I guess I'll choose the easiest way: leave them like they are. They look great (at the moment)!

Thanks!

efnfast · 03-19-2016

I coated mine for heat retention. They almost have a beaded glass look, not a shiny look just for looks. Did it for under hood temps and "better gas scavenging"

MuRCieLaGo · 03-19-2016

How did you coat them?

efnfast · 03-19-2016

I think I sent them to Swain Tech in PA. If you need more info, I'll pull some paperwork. They offer two different coatings. One for looks, one for function. I picked the one for function/better heat retention. - Steve

Gunny · 03-19-2016

Quote:

Originally Posted by efnfast

I think I sent them to Swain Tech in PA. If you need more info, I'll pull some paperwork. They offer two different coatings. One for looks, one for function. I picked the one for function/better heat retention. - Steve

thanks for refreshing my memory, Steve ... to clarify, I had my headers Swain coated for function.

Karl · 03-19-2016

Jet hot coating via lo ko coating in the Chicago suburbs. I have always jet hot coated headers. With the lt-5 engine not exposing as much of the exhaust header in the engine bay vs a traditional sbc, maybe it's not necessary.

https://www.google.com/search?site=&...#istate=kp:xpd

KILLSHOTS · 03-19-2016

I had my OBXs coated. I wouldn't install headers without coating. Obviously, the heat shields are lost when headers are installed, so there is a chance that fingers, wires, etc. could be burned, which I didn't want. I noticed that underhood temps seemed to be down quite a bit after the install. Furthermore, heat dissipation with the coating was so good that I could actually touch the headers within maybe 15 minutes after a drive. Highly recommended. Make sure you take them to a reputable coater and - VERY IMPORTANT - make sure you confirm that they'll be coated both inside and out, otherwise the process will be worthless. Believe it or not, some coaters do shortcut the process and coat the outside only. Good luck.

03-18-2016	#1
MuRCieLaGo Join Date: Aug 2014 Location: Trois-Rivieres (QC) Posts: 473	Headers: Wrap or not? Coat or not? Hi, I just received my OBX headers. Should I have them coated? Wrapped? I found this: What do you guys think? Last edited by MuRCieLaGo; 03-18-2016 at 08:51 PM.

03-18-2016	#2
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Re: Headers: Wrap or not? Coat or not? They're stainless, of course; like my SWs. And for the life of me I couldn't see any demonstrably significant reason to paint or coat them - aside from possibly one of cosmetics. But, I'm NOT a WAXER either (not that the headers of an LT5 do more than barely peek out between the heads and the frame rail anyway!) A show car = yes (I guess) A warrior? Meh... YMMV __________________ Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry Last edited by Paul Workman; 03-18-2016 at 09:21 PM.

03-18-2016	#3
Gunny Join Date: May 2005 Location: Georgia Mountains Posts: 926	Re: Headers: Wrap or not? Coat or not? I've had SW long tubes on the Z for well over 10 years. When I installed them the current "wisdom" & recommendation was to coat them ... which I did. Honestly, if I were doing it today, I would leave them stainless and save the $$$ to use somewhere else. Not that I dislike having coated headers or think they are better or worse but I would be just as happy with the original stainless look. __________________ George Jones Founding Member #14 www.zrwon.com

03-18-2016	#4
MuRCieLaGo Join Date: Aug 2014 Location: Trois-Rivieres (QC) Posts: 473	Re: Headers: Wrap or not? Coat or not? My car is definitely a warrior, not a show car. So I guess I'll choose the easiest way: leave them like they are. They look great (at the moment)! Thanks!

03-19-2016	#5
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,261	Re: Headers: Wrap or not? Coat or not? I coated mine for heat retention. They almost have a beaded glass look, not a shiny look just for looks. Did it for under hood temps and "better gas scavenging"

03-19-2016	#9
Karl Join Date: May 2013 Location: Chicago Posts: 977	Re: Headers: Wrap or not? Coat or not? Jet hot coating via lo ko coating in the Chicago suburbs. I have always jet hot coated headers. With the lt-5 engine not exposing as much of the exhaust header in the engine bay vs a traditional sbc, maybe it's not necessary. https://www.google.com/search?site=&...#istate=kp:xpd __________________ 1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black Sold 1985 L98 Blue On Blue Sold

03-19-2016	#10
KILLSHOTS Join Date: Feb 2014 Location: AZ Posts: 860	Re: Headers: Wrap or not? Coat or not? I had my OBXs coated. I wouldn't install headers without coating. Obviously, the heat shields are lost when headers are installed, so there is a chance that fingers, wires, etc. could be burned, which I didn't want. I noticed that underhood temps seemed to be down quite a bit after the install. Furthermore, heat dissipation with the coating was so good that I could actually touch the headers within maybe 15 minutes after a drive. Highly recommended. Make sure you take them to a reputable coater and - VERY IMPORTANT - make sure you confirm that they'll be coated both inside and out, otherwise the process will be worthless. Believe it or not, some coaters do shortcut the process and coat the outside only. Good luck. Last edited by KILLSHOTS; 03-19-2016 at 11:38 AM.