ceramic coating for exhaust???

[Trakrat]

Hello All,
I'm getting too much heat from my aftermarket exhaust/headers and think the best thing to do is to send them out to get a high quality ceramic coating put on.

Anyone recommend someone they trust to ceramic coat my headers???

[sixbanger]

Why not just wrap them with that heat resident cloth. Be cheaper. You could see if that solves the heat problem.

[Bob Kontak]

Agree.

[gtc]

There are ceramic coating shops all around. I'm sure there is someone local who can do it.

[Shaun @ Tru6]

Jet Hot is the standard for exhaust coatings. Two of our customers wanted aesthetics/correctness so we used Cerakote high heat for this muffler for a shop in OH and 65 220SE exhaust manifolds for one in CA.

[kenikh]

Finally, a correct looking gray!

Sent from my Nexus 6P using Tapatalk

[Tremelune]

What do you mean you're "getting too much heat"? Too much heat for what, the motor?

Exhaust wraps tend to trap moisture and lead to corrosion. The only place I'd use it is on a standard motorcycle, because it looks cool while it traps moisture.

[TimT]

I took these pics to post in another thread regarding "what headers are these or something...)

The one part of this header system is coated by Jet Hot.. the other by Swain Tech...

The Jet hot is a smooth fairly thin coating... Swain is grainy looks porous and is thick..

Both are good while they last, and both will fail at some point... a scratch, poor surface prep, application...I wont get into why portions of this exhaust system are coated by different manufacturers

[famoroso]

[QUOTE=Shaun @ Tru6;9626572]Jet Hot is the standard for exhaust coatings. Two of our customers wanted aesthetics/correctness so we used Cerakote high heat for this muffler for a shop in OH and 65 220SE exhaust manifolds for one in CA.




What would you suggest for correctness for a 1988 factory sausage muffler?

3.2 Carrera muffler reconditioning?

[Shaun @ Tru6]

Originally Posted by famoroso

What would you suggest for correctness for a 1988 factory sausage muffler?

3.2 Carrera muffler reconditioning?

As you probably know, these mufflers were just mild steel so rust is correct. The one posted by 997at looks good, a little on the light side and looks slightly green but that could just be the camera. I would do something a little darker and greyer for a Carrera but really it's about personal taste on what shade of grey you like and would work on your car. Or maybe even white if your car is Guards Red and you want to go with a white frame 93 Ducati 900SS look.

[911pcars]

Cerakote offers more color selections than Jet Hot.

https://www.cerakoteguncoatings.com/finishes/SE-234/cerakote-color-chart-25-pk/?gclid=CjwKEAjw4IjKBRDr6p752cCUm3kSJAC-eqRtQESE25kE7aqTI0QetskzM_38Crb8e8b6HoQsm3cDZxoCIi Dw_wcB

No affiliation
Sherwood

[turbobrat930]

I did not coat my primary and secondary headers, because I did not want to take the chance of a piece flaking or getting knocked off, and F.O.D.'ing out my turbo. But, I did have Performance Coatings in Jonesboro, GA "perma chrome" ceramic coat my wastegate exhaust, as well as my exhaust behind the turbo. Here is a short video of what they look like.
if you did your whole header system, you will most definitely see a drop in temps...

[Trakrat]

perfect... THANK YOU ALL!!!

I checked out Jet-Hot's website and am working on getting my headers in for a flat white ceramic coating. I was told that white is the best for heat protection.

As for using an exhaust wrap... the headers have heater boxes welded on them and I wouldn't be able to get the entire thing protected properly with a wrap. I also understand that wrapping it won't provide as good of a heat protection as ceramic coating.
It's about $500 to get them coated... should take less than 2 weeks.

[Cook&Dunning]

I did not coat my primary and secondary headers, because I did not want to take the chance of a piece flaking or getting knocked off, and F.O.D.'ing out my turbo. But, I did have Performance Coatings in Jonesboro, GA "perma chrome" ceramic coat my wastegate exhaust, as well as my exhaust behind the turbo. Here is a short video of what they look like.
if you did your whole header system, you will most definitely see a drop in temps...

Hi turbobrat - you really need to clean up that engine - it is a mess! Just kidding that thing is a piece of Art. Beautiful.

[9elf]

I coated mine. Inside and out. If only to reduce the radiant heat somewhat and to stop corrosion.

[Tremelune]

Well this got interesting.

What's the cost difference between a stainless steel exhaust and one that has been ceramic coated inside and out? Comparable corrosion resistance?

I had assumed that the primary purpose of ceramic coating was corrosion resistance and cosmetics (for which I would assume stainless is superior)...Am I about to learn that coating these things has an appreciable effect on engine temperatures at speed?? 911 exhausts get better airflow than their oil coolers...

[Trakrat]

Originally Posted by Tremelune

What do you mean you're "getting too much heat"? Too much heat for what, the motor?

Too much heat for the oil lines and fuel lines. These Fabspeed race headers extend out past the engine and sit DIRECTLY below the rubber oil return line. In fact.. I had to get a wire tie just to pull the oil line off of the header as it is that close.

[turbobrat930]

Originally Posted by Tremelune

Well this got interesting.

What's the cost difference between a stainless steel exhaust and one that has been ceramic coated inside and out? Comparable corrosion resistance?

I had assumed that the primary purpose of ceramic coating was corrosion resistance and cosmetics (for which I would assume stainless is superior)...Am I about to learn that coating these things has an appreciable effect on engine temperatures at speed?? 911 exhausts get better airflow than their oil coolers...

Actually, you are only partially correct. Yes, it helps prevent mild steel from corrosion, and well as keeping it look good. But, it also does more.

On a S.S. header/exhaust, it really does not aid in corrosion resistance (especially, if they are 321), but does keep them looking nice.

But, there is a point you are missing on the heat reduction side of things. This may come into play more on a turbo setup, but none the less, it still applies here as well.
There are three things that aid in helping the exhaust system maximize the available HP ( or at least not hurt HP). They are:

-proper scavenging (equal length, well designed collector, tubing size matched for the engine its on)
- sound pressure (on a turbo car)
-and heat.

My point is, the more heat you can keep in the exhaust stream, instead of radiating it out, the faster, more efficiently the exhaust will flow. Remember, heat is energy.

And yes, it also keeps the engine area cooler, which helps in everything, including oil temps.

[RichardNew]

"First we have the cosmetic coatings. The only thing they do is make your exhaust header look look shiny. These low-tech coatings are nice looking but they do very little to insulate the exhaust or increase your power. You want a thermal barrier that keeps the energy in the header. Keeping the heat in the pipe lowers the temperature in your engine compartment and more importantly it keeps exhaust gas velocity high. These thermal coatings are usually about 0.15-inch thick as opposed to the cosmetic coating, which are seldom more than 0.002-inch. Swain Tech Coatings (swaintech.com) has a ceramic coating that normally reduces radiant heat by about fifty-five percent."


Richard Newton
Exhaust

[Dodge Man]

Define too much heat? Oil temp? Headers run much cooler than heat exchangers. My buddy's steel headers do not have over heating problems and my SSIs do not either. What material is your exhaust system? Mild steel or SS? IMHO Pick you coating carefully because the K Factor varies widely. It is all about keeping the heat in the exhaust tubes and out the back. Best of Luck.