Exhaust Coatings

cpwolf said:
Did you get it done locally? I’m looking at getting my CJ5 304 headers and side pipes all
Pulled, and send them to Jet Hot. I want their polished look, putting polished stainless or chrome all over her.
Click to expand...

Semi-local. It's a shop on the westside of the mountains. @Woodrow got his header done there also recently. When I'd contacted Jet Hot their prices were 2-3 times higher too.

https://www.performancecoatings.com/

Check them out, they offer a chrome looking ceramic coating.
 
  • Like
Reactions: Woodrow
Wildman said:
I had the Y-pipe ceramic coated and installed ceramic coated headers and so far haven't had it running long enough to be able to really tell. But with a IR thermometer I'm seeing under 200* at the header pipes. IMO that's a pretty good heat signature off the tubes.
Click to expand...

I looked at their website. Did you do the Chromex polished stainless/chrome look on your headers? Or a satin?

Any pics? Ha. Would love to see it.



I know this forum is for out TJ’s, but I want to get that chrome / polished Stainless on the header and all the way to the end of the side pipe.
C7050A7C-9290-4765-8619-6832ED40C284.jpeg
 
  • Like
Reactions: Wildman
Wildman said:
Semi-local. It's a shop on the westside of the mountains. @Woodrow got his header done there also recently. When I'd contacted Jet Hot their prices were 2-3 times higher too.

https://www.performancecoatings.com/

Check them out, they offer a chrome looking ceramic coating.
Click to expand...

@cpwolf I will recommend Performance Coatings. This is my header in “shiny aluminum“ which is good for 2000 degrees.
1681676092272.jpeg

They also have a more chrome-like “chromex” which they say is OK upto 1300 degrees. Their service and work was great. Fast turn around and a fair price.
 
  • Like
Reactions: TheBoogieman and Wildman
I bought headers from JBA that were already ceramic coated. I had them do my Y-pipe.

This is it installed on the Jeep. I don't remember what color I picked.

20230222_165742.jpg


20221118_101828.jpg


But as Woodrow said they do offer the Cromex.
 
cpwolf said:
I looked at their website. Did you do the Chromex polished stainless/chrome look on your headers? Or a satin?

Any pics? Ha. Would love to see it.



I know this forum is for out TJ’s, but I want to get that chrome / polished Stainless on the header and all the way to the end of the side pipe.
View attachment 417076
Click to expand...

Here's a picture of some of their coating.

_nc_ohc=P60Le3n55poAX8PWfZZ&_nc_ht=scontent-sea1-1.jpg
 
JMT said:
I just sprayed some VHT on mine. I’m not fancy like you guys.
Click to expand...

Some of use are trying to cut down on the under hood temps. It's why I did mine. And it actually wasn't that expensive. Don't knock it til you've tried it.
 
TheBoogieman said:
I'm guessing with the same results. I tried that BS on an old CJ. It's all in your mind with the results on coatings. No appreciable difference. 🤫
Click to expand...

I’m interested because of the looks. I didn’t IR measure the temps after driving my CJ5 all over. The headers were at 350. I thought they’d be higher.

The 2 places I looked at said they’d bring them down 50%.

The actual pipe on the end was 114 which I thoght could t be right, it’s burned my leg.

Guys quoted that their Harley pipe no longer burned them, so that is my goal, my wife’s leg touches that and she’ll never ride in it again.

4D1CC83E-7BD9-416B-9119-241C365D1912.jpeg


5B572D84-990A-4E1D-89AA-68E7E8C1CA4F.jpeg
 
TheBoogieman said:
I'm guessing with the same results. I tried that BS on an old CJ. It's all in your mind with the results on coatings. No appreciable difference. 🤫
Click to expand...

I’m just trying to keep it from rusting. Have no idea if it works.
 
  • Like
Reactions: sab
cpwolf said:
I’m interested because of the looks. I didn’t IR measure the temps after driving my CJ5 all over. The headers were at 350. I thought they’d be higher.

The 2 places I looked at said they’d bring them down 50%.

The actual pipe on the end was 114 which I thoght could t be right, it’s burned my leg.

Guys quoted that their Harley pipe no longer burned them, so that is my goal, my wife’s leg touches that and she’ll never ride in it again.

View attachment 418010

View attachment 418011
Click to expand...

In the two photos above, your targets have drastically different emissivity values. IR guns are only as accurate as the assumed emissivity. Shiny objects have low emissivity and dark/non-reflective targets have high emissivity. Most default settings for emissivity are high (0.9 to 1.0), but with chrome, that setting won't work very well. You can adjust the emissivity to get a more accurate reading on that shiny tail pipe, or just put a piece of gaffers tape (flat black, not glossy black) on it, and shoot your temp on that.
 
sab said:
In the two photos above, your targets have drastically different emissivity values. IR guns are only as accurate as the assumed emissivity. Shiny objects have low emissivity and dark/non-reflective targets have high emissivity. Most default settings for emissivity are high (0.9 to 1.0), but with chrome, that setting won't work very well. You can adjust the emissivity to get a more accurate reading on that shiny tail pipe, or just put a piece of gaffers tape (flat black, not glossy black) on it, and shoot your temp on that.
Click to expand...

There you go, I've learned something for sure. Much appreciated. I did see a different on that pipe when I hit that inner wall than the outer wall.
 
  • Like
Reactions: sab
cpwolf said:
I did see a different on that pipe when I hit that inner wall than the outer wall.
Click to expand...

I didn't even notice the mitered end. You can probably get a very accurate temp if you shoot down into the pipe from the end and get the dark inner wall, but down inside. Now I learned something, too!
 
I ceramic coated a few Harley exhaust and turbo headers, down pipes and turbo housings. On the exhaust parts I had them do inside and outside of the parts. It cut down on temps of the pipes a lot. I noticed it the most on the Harley of course being so close to the legs. I did the turbo parts just to improve performance. I was very happy with it all.
 
TheBoogieman said:
How much did it knock the temps down?
Click to expand...

Don't know yet. Once the Jeep is driving I'll be able to give a better estimate on how well it helps. I could melt a cup of ice sitting in my cup holder from the heat coming thru the floorboards. What I've seen for reduced temps so far with the engine running at the headers seems to be pretty good.

JMT said:
I’m not knocking anything. Just saying what I did last week.
Click to expand...

I tried the VHT paints but I must not have cured the paint correctly because it flacked off on me. The other thing is that you can't really coat the inside with the VHT paint where as the ceramic coating is both inside and outside.


TheBoogieman said:
I'm guessing with the same results. I tried that BS on an old CJ. It's all in your mind with the results on coatings. No appreciable difference. 🤫
Click to expand...

So you feel a uncoated or painted header compared to a ceramic coated header is the same?
 
  • Like
Reactions: JMT
I am in the prosses of building a 4.6 stroker. I have a Banks torque tube header and was wondering if I have it ceramic coated will the coating survive the temps of the cam break in.
 
Top Bottom
Back