[jlm]

had my supersprint header ceramic coated with the HP Coatings Hi-tech finish. I had to grind a bit off to weld on an adapter for a wide band O2 sensor. Could not believe the amazing toughness of the coating. I only needed to remove about a 1-1/2" circle and it took three 40 grit grinding discs.

This is supposed to reduce the temperature of the header by 200 degrees F.

[Andy@Ross-Tech.com]

Quote: Originally Posted by jlm

had my supersprint header ceramic coated with the HP Coatings Hi-tech finish. I had to grind a bit off to weld on an adapter for a wide band O2 sensor. Could not believe the amazing toughness of the coating. I only needed to remove about a 1-1/2" circle and it took three 40 grit grinding discs.

This is supposed to reduce the temperature of the header by 200 degrees F.

Is yours coated inside and out? BTW, you have an electronic present on its way to you.

[obehave]

I've seen the difference Jet-Hot coated headers make. Very impressive.
Don't add much weight either. Doesn't reduce noise as much as header tape but looks a whole lot better
Nice to hear it's that tough.

[CurtP]

Obe, if you like Jet Hot, you should check out Swain Tech coatings. I used Swain for the first time on my new headers on my Formula -- *very* nice stuff, although it isn't made to look pretty.

Just as a FYI - if you plan on using nitrous, the standard Jet Hot sterling silver finish won't stand up to the abuse. Jet Hot's 2000 degree ceramic coating will though (I've had both).

[jlm]

here is a link to the Hi percoat exteme, rated at 2000 degrees; it si what i used:
http://www.hpcoatings.com/hipercoat_extreme.htm

[obehave]

I'll take functionality over pretty any day.
No nitrous for me. Not real big on temporary horsepower.

The Gold Coat that Swain does sounds very nice Curt. Any real world experience with it?

Who's header you using John?

[jlm]

supersprint header, 3" ACT high flow metallic cat, 2-1/2" pipes to 3" Moroso Spiralfow resonator, twin supersprint mufflers

[CurtP]

Nope, I don't have any internal engine parts coated. I didn't know about Swain when I was building my engine, otherwise I would have had the pistons coated. I found out about Swain when I called Stainless Steel Works and was inquiring about a set of stainless steel long tube headers. Only coating I've used from Swain is their White Lightning header coating; I've been really happy with it.

HPC isn't too popular with the domestic guys, but seems to be with some of imports. Really good stuff from what I've heard - haven't seen it in the flesh yet though. From the pictures the extreme looks almost exactly like the Jet Hot 2000 - which Jet hot now claims is good to 2,450°F; higher than when I had my old headers coated. They also show a picture with the same three colors too (blue, black and silver). I've had both the blue and black Jet Hot 2000 coatings and the blue fades over time and ends up not looing too good -- the black seemed to hold up very well. I liked the Jet Hot 2000 - it seemed to do a good job, but was a bit on the thin side -- around .005" - .008" thick. That's why I went with Swain this time - .015" - .020" thick, but definately doesn't look nearly as nice (I had to have function over form).

[obehave]

Thanks for the answers.

[Andy@Ross-Tech.com]

Quote: Originally Posted by jlm

supersprint header, 3" ACT high flow metallic cat, 2-1/2" pipes to 3" Moroso Spiralfow resonator, twin supersprint mufflers

You forgot to mention the pea shooters.

[CalCooperS]

Quote: Originally Posted by jlm

had my supersprint header ceramic coated with the HP Coatings Hi-tech finish. I had to grind a bit off to weld on an adapter for a wide band O2 sensor. Could not believe the amazing toughness of the coating. I only needed to remove about a 1-1/2" circle and it took three 40 grit grinding discs.

This is supposed to reduce the temperature of the header by 200 degrees F.

Hey JLM, just how are you adapting a wide band O2 sensor to the mini if you don't mind me asking. Thanks in advance!

[jlm]

it's just a threaded adapter for use with a wideband sensor in conjunction with dyno testing (at chez Helix)

[macncheese]

I had my headers dipped at www.onecryo.com, then coated at Performance Coating (Satin Black). The reason the polished looking coatings dont last in higher temps is that the aluminum melts. Im not sure if it effects the performance, but the coating looks crummy after passing their rated temps.


--
Cheese

[CurtP]

John, why did you have the bung welded in? Your dyno tuner should have let you know that they can sniff right at the tailpipe with the same accuracy, even with a cat in place. I was a bit skeptical myself, and my tuner showed me on my other car since I have a bung welded in the Y-pipe - the readings were dead same.

Cheese - I'm curious why you had your header cryo treated before coating. I've never heard anyone doing that to headers before. Since steel tempers with heat cycles, I'm unsure of the benefit. Your explanation of the coating discoloration is the exact same that I've heard from several coaters. I've also heard that the roughness of the higher temprature coatings comes from the ceramic that is in it. Jet Hot told me not to let the silver coating get over 1000°F, even though it's supposed to withstand 1200°F - nitrous on my old motor made the exhaust temprature coming out of the head 1500°F+.

[macncheese]

Quote: Originally Posted by CurtP

Cheese - I'm curious why you had your header cryo treated before coating. I've never heard anyone doing that to headers before. Since steel tempers with heat cycles, I'm unsure of the benefit. Your explanation of the coating discoloration is the exact same that I've heard from several coaters. I've also heard that the roughness of the higher temprature coatings comes from the ceramic that is in it. Jet Hot told me not to let the silver coating get over 1000°F, even though it's supposed to withstand 1200°F - nitrous on my old motor made the exhaust temprature coming out of the head 1500°F+.

Sorry my timeline was off. First coated, then dipped. The cryo tempering forces the coating deeper into the metal. It also adds dimesnional stability to the flanges. Header leaks were a common problem on the engine this was designed for.


--
Cheese

[CalCooperS]

Quote: Originally Posted by jlm

supersprint header, 3" ACT high flow metallic cat, 2-1/2" pipes to 3" Moroso Spiralfow resonator, twin supersprint mufflers

Hey JLM just another question if you don't mind, does your 3" ACT high flow metallic cat bolt straight up? Any dimensions such as length. I inquired about the supersprint cat and they wanted over a $1000, not in my budget right now. Also any CEL light? Thanks!

[Hubert]

Hi,
How effective is ceramic coating compared to heat wrap?
Can anybody recommened a header coating company in the UK?
I would also like to measure the header surface temp before and after the coating. How should I go about it?
Many Thx!

[obehave]

Quote: Originally Posted by Hubert

Hi,
How effective is ceramic coating compared to heat wrap?
Can anybody recommened a header coating company in the UK?
I would also like to measure the header surface temp before and after the coating. How should I go about it?
Many Thx!

It's much better than wrap.
Wraps only real advantage is price.
Can't help with the company
A decent pyrometer will work for temps.
There used to be pens like China Makers that burned off at specific temps These were real good for edxhaust tuning, probably not even around any more. It was nice though. Mark a couple test ponits on the pipes, run the snot out of your car and then see what burned off.
You should see roughly 15% or so reduction in temps. You'll feel the difference as soon as you raise the hood.

[robbo mcs]

Quote: Originally Posted by Hubert

Hi,
How effective is ceramic coating compared to heat wrap?
Can anybody recommened a header coating company in the UK?
I would also like to measure the header surface temp before and after the coating. How should I go about it?
Many Thx!

Hi Hubert,

Not the UK, but jet hot do ceramic coating in Australia. I imagine it wouldn't be too expensive to send the headers down here.

jet-hot australia

Cheers

Robbo

[Hubert]

Hi Robbo,
Do I need to deal with the import tax if I were to ship the header to Aus for the coating process?
Hubert