I'll be receiving my Topspeed Headers soon, and was wondering if it would be worthwhile to have them ceramic coated by Jethot? How effective and how durable are these ceramic coatings?

Here's more info from Jethots site:
http://www.jet-hot.com/pages/headercoatings.html

Any info is apprceiated.

 

The jet hot helps quite a bit with keeping underhood temps down. If you decide to get it, make sure you get the high temp black coating. The silver is not as durable, at least not with boosted applications. FWIW I have the header and downpipe on my single turbo supra done in the black jet hot. I get up to 830c EGT at the header and the jet hot holds up great.

 

go with the jet hot 2000....when i talked to the rep at jet hot thats what he recommended to be the most durable and its not much more than the sterling

 

I have the DC Sports stainless headers, and had them coated with the black Jet-Hot 2000. The "2000" stuff handles a much higher temp and thus will be more durable in the long run. From what I've read, you can hit these things with a hammer and it won't crack the Jet-Hot coating. (Not that I'm going to try that myself!)

Here are some pics:
http://www.spintronic.com/gallery/vi...me=350zheaders

As you can see in the pic, I have two sets: the stainless and the ceramic models. I haven't yet taken pics of the Jet-Hotted stainless pipes, but they are basically just a textured flat black. I felt a bit guilty putting a flat black coating on such nice looking polished headers, but function is far more important than cosmetics on this particular part. I'll try to get some pics of the Jet-Hotted headers soon. (Haven't installed them yet.)

 

jreaiter: Thanks. I'd really like to see some pics of the coated headers if you get a chance. If you don't mind me asking, what did yours cost to get coated iwth the 2000?

Wouldn't the 2000 coating be a little overkill? I thought that was more geared towards FI and serious race applications where EGTs will be really high.

 

What kind of real world numbers can be seen with these jet coats...

 

deviant1: Jet-Hot charged about $200 for the whole job. The JetHot 2000 stuff was slightly more expensive than the regular coating... about $20-$30 I believe. (Not much.) I'll try and get some pics taken this weekend. As far as 2000 being overkill, yeah, it might be. But for only a few bucks more I figure it's worth it to have the extra heavy duty coating. Just gives me that much more insulation, and that never hurts. The only "disadvantage" to the 2000 stuff is that you can't get the fancy "Sterling" color. The 2000 stuff only comes in flat colors: black, blue, red, and maybe another. I went for black since it's pretty stealthy and isn't really noticeable inside the engine bay. A casual onlooker of the engine probably won't even notice I have headers in there.

metalz: What sort of real-world numbers? The main benefit of coating your headers like this is not really performance, but rather vastly extended life. The problem with steel headers is that they have a somewhat limited lifetime before they tend to crack, especially the welds, due to the extreme heat cycling they get put through. They get extremely hot very quickly, then cooled very quickly, back and forth, all the time.

The benefits of something like JetHot are twofold:

1) JetHot coats the inside and outside of the headers, insulating the steel and welds from such extreme temperatures. This increases the life of the headers dramatically. I'm not sure what the average life span of uncoated headers is, but I'd guess that it wouldn't be more than a few years if you drive the car hard all the time. Maybe someone else with some long term experience can give us some input there.

2) This insulation also has the benefit of helping to keep the heat out of the engine bay. People who put uncoated headers on their engine increase the under-hood temps dramatically. This just shortens the life of various components, such as rubber hoses, electronics, etc.

One interesting thing to note about the DC ceramic-coated headers is that they use mild steel, not stainless, and they only coat the outside of the header, not the inside. This type of exterior-only coating addresses item #2 above, but not item #1. That's why I bought the stainless version, then had it coated it by JetHot. I get the benefit of stainless steel, which is much stronger than mild steel, and I get a much better coating.

That being said... my DC ceramic headers are for sale. I asked JetHot, and they said they could strip off the ceramic coating and put their own on. The end result would probably be about as good as the stainless headers, to be honest. I was all set to do that with the ceramics, then I suddenly found a smokin' deal on the stainless that I couldn't pass up.

 

Here's a pic of my black coated DC stainless headers. As previously stated, it's a shame to cover up that finish, but the benefits are worth it.

I haven't had a chance to try these headers out yet, but the same coating worked great on my previous RX-7 TT.

 

Just took a pic of mine. DC stainless steel headers with Jet Hot 2000, black coating.

 

damn, they look better in black

 

I dunno, I really like the polished stainless. It looked so nice.



Here's a pic of the DC stainless next to my other set of DC ceramic:



The ceramic are a bit dirty since they were used, but this gives you an idea of how they all look. I have to admit it was tough to cover up that great polished finish.

 

I thought that I read somewhere that you should only coat the inside of a stainless-steel exhaust component....?

...but it is good to coat both inside & outside of regular steel....

 

group buy?

 

Hmm... I haven't heard that one. I guess I can see the reasoning. If you do not coat the outside, than any heat gathered in the pipe's metal will easily dissipate away. However, with the inside coated as well I'd guess there would be a vastly reduced amount of heat in the metal anyway. Interesting consideration...

On that note, the DC ceramic headers are mild steel and are only coated on the outside. That's why I was going to have JetHot strip them and do a JetHot coating on them. (I'd still recommend that for anyone who plans to use the DC ceramic headers.) Coating only the outside, especially on mild steel, surely can't be beneficial to the long term life of the header.

 

Dumb question. If I were to buy a slightly used set of Crawford Headers could I have them coated with this Jethot coating? Is there a cleaning and prep process that is used in conjunction with the application that would clean out the used headers?

TIA

-Neffster

 

neffster: Yes, they will coat used parts.

Thanks to everyone else who replied here. I'l be sending my headers out later this week to get the Black 2000 coating. Then I get to wait a few months before I can get them installed

 

from the research i have done in the past on this, i remember that jet hot coats the inside and outside of the headers for heat retention, and corrosion resistance. this also makes the inside runners smoother and promotes laminar (smooth) flow. the coating is truly multi purpose. i think that this is only true of the ceramic looking coating, and not the black. the quality of their ceramic coating is unbelievable, however. the factory DC coating can scratch off, but the jet hot stuff is like powdercoating, and is very durable.

if you go to www.westcoastviper.com and look under the 350z section, you will see a set of nismo headers with the jet hot ceramic (or a similar company's) coating on them....very pretty.

Chad

 

hmm, im still curious as to what kind of hp gains that can actually been seen in the VQ from the Jet Hot.

as for the group buy, there was one on 350zmotoring, but it died. JetHot was offering up to 20% off.

anyone want to take command and start it up again?

 

I doubt you'd see any significant power gains from coating your headers, to be honest. The main reason for doing this is consistency and longevity of the headers, and keeping heat out of your engine bay. Protocav mentioned above that there might be an improvement in laminar flow inside the headers if you get JetHot's Sterling coating (their chrome-ish looking coating), but even then I doubt the numbers would be big.

 

This Jet-Hot GB did not die. We have 4 people so far and we need to get 10 total to get the 20% discount.
Here is the link:

http://www.350zmotoring.com/forums/s...338#post229338


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