Ceramic coated headers
Thread Starter
Instructor
Joined: Nov 2016
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Ceramic coated headers
mid length arh headers. I want to get the ceramic coated but I’m getting mixed opinions on coating the inside. I’ve seen where the coating flakes off and clogged up the cats. Where as doing outside only stresses the stainless. To do the insides or not to do?
Thread Starter
Instructor
Joined: Nov 2016
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they told me the same thing. I was mainly doing it for a clean look,just wasn’t sure about coating the inside or not. Seen mixed reviews
Premium Supporting Vendor
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From: Manassas VA
I'm with Nick, seen way to many warped flanges and busted welds...
Regards
Chip
E-Ray, 3LZ, ZER, LIFT
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From: NE South Carolina
Have Sanderson ceramic coated long tube headers on my 18 year old street rod! Look almost new.
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Thread Starter
Instructor
Joined: Nov 2016
Posts: 207
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I’m so confused. Is ceramic coating a bad thing? Mainly wanted them for the look “flat black”. One coater says do the insides and one says just do the outside and most individuals say don’t do it for reasons listed above 🤷🏻*♂️
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From: Atlanta GA
I agree with Spin , unless your car is a full on track car, there is nothing that is going to radiate more heat than that block of cast iron GM calls the exhaust manifolds , then add to it the CATs that are right under it , between the block , frame rail , firewall and starter because GM need them to heat up fast for emissions . And everybody is worried about 4 stainless tubes that have way more clearance around them for airflow and a set of cats that is now down in the tunnel.....
Don't coat them , it just causes stress risers if they get to hot.
Dave
Don't coat them , it just causes stress risers if they get to hot.
Dave
Thread Starter
Instructor
Joined: Nov 2016
Posts: 207
Likes: 9
I agree with Spin , unless your car is a full on track car, there is nothing that is going to radiate more heat than that block of cast iron GM calls the exhaust manifolds , then add to it the CATs that are right under it , between the block , frame rail , firewall and starter because GM need them to heat up fast for emissions . And everybody is worried about 4 stainless tubes that have way more clearance around them for airflow and a set of cats that is now down in the tunnel.....
Don't coat them , it just causes stress risers if they get to hot.
Dave
Don't coat them , it just causes stress risers if they get to hot.
Dave
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,950
Likes: 12,363
From: NE South Carolina
Sanderson uses thick flanges and quality welds. Welds that bust are poor ones! My headers get hot! Don't try touching them! What do you expect with ~2000 F exhaust gas passing through!
If concerned get stainless!
Headers after assembling the 502/502 crate engine from some 30 boxes of parts 18 years ago! Look almost as good today.
Last edited by JerryU; Jul 29, 2018 at 08:20 AM.
Le Mans Master
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From: Atlanta GA
Le Mans Master
Joined: Oct 2014
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From: Atlanta GA
how many miles do u put on it in a year?
Dave
Melting Slicks
Joined: Sep 2004
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From: Northern Colorado
FWIW, I had Kooks stainless stepped headers on my 454 cu in LS7 in my C6Z that flowed into a B&B fusion exhaust. When I pulled the motor for a refresh ( I tracked it heavily and had an A.R.E. dry sump pan issue) I had the headers/ X-pipe ceramic coated by Jet Hot inside/out. Besides the obvious appearance upgrade, there was a MASSIVE decrease in under-hood temperatures!!! ANY car I do in the future will have the headers/x-pipe coated including my current LT5. besides cost, I saw ZERO downside to coating.
Team Owner
Joined: Jan 2007
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From: cookeville tennessee
ttt
As long as you get a good coated set of headers you will do good on the outside and inside. THIS IS LIKE EVERY THING ELSE YOU CAN BUY, if you get the coating that will go up to like 2,k plus deg's it will do great and will keep that look and not break down. Some of these vendors in here the coating that you get that they give you that is free is junk.... ASK ME HOW I KNOW THAT. Had to pull a set off my c5 and have them redone within 6 months after putting them on.
Like John said above here if you use the wrap on them IT REALLY WILL DO BETTER THAN THE COATING ON THEM AS FAR, as keeping the temp's down from under the hood by a long shot.... Robert
Like John said above here if you use the wrap on them IT REALLY WILL DO BETTER THAN THE COATING ON THEM AS FAR, as keeping the temp's down from under the hood by a long shot.... Robert
Last edited by robert miller; Jan 28, 2019 at 04:00 PM.
Team Owner
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From: Athens AL
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I've had JetHot coated TPiS headers on my car for years, eventually it will flake off the underside of the header if you drive pretty much daily, and there is where it will start to rust. My inside-coated headers have clogged up the main cat, but I believe this was primarily due to the car dropping into open loop at idle and part-throttle cruise and it running too rich.
It does make a huge difference in underhood temperatures to have them coated however. Wrap does help temps, but I will never wrap a header because this usually invites rust inside the wrap. Some brands with higher quality stainless may never do so, but I learned my lesson.
It does make a huge difference in underhood temperatures to have them coated however. Wrap does help temps, but I will never wrap a header because this usually invites rust inside the wrap. Some brands with higher quality stainless may never do so, but I learned my lesson.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,950
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From: NE South Carolina
As long as you get a good coated set of headers you will do good on the outside and inside. THIS IS LIKE EVERY THING ELSE YOU CAN BUY, if you get the coating that will go up to like 2,k plus deg's it will do great and will keep that look and not break down. Some of these vendors in here the coating that you get that they give you that is free is junk.... ASK ME HOW I KNOW THAT. Had to pull a set off my c5 and have them redone within 6 months after putting them on.
Like John said above here if you use the wrap on them IT REALLY WILL DO BETTER THAN THE COATING ON THEM AS FAR, as keeping the temp's down from under the hood by a long shot.... Robert
Like John said above here if you use the wrap on them IT REALLY WILL DO BETTER THAN THE COATING ON THEM AS FAR, as keeping the temp's down from under the hood by a long shot.... Robert
Last edited by JerryU; Jan 29, 2019 at 07:09 AM.
Drifting
Joined: Jan 2006
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From: Castro Valley State of Insanity
I have ceramchromed Bassett headers on my 79 Cole with a pump gas 565 BBC. Coated inside and out 8 years and a couple of hundred hours ago. They still look new and actually continue to get better looking after every polish job. I asked constantly how I keep my "chrome" from turning blue. These headers are also water injected so above 1500 rpm they also have water flowing with the gases, These headers were first built in 1988 so they are living testaments to the benefits of HTC. The exterior of the tubes also stay much cooler than raw, chrome or painted tubes. Go for inside and out, the powder is sprayed on then baked, I see no way this could compromise the integrity of the metal. Besides the headers my oil pan and intake manifold are also coated. Very easy to maintain a chrome like appearance.