So ive been following the progress of my toda header by ups tracking #'s and it should be here in the next day or so, now before i install it a few people mentioned having it jet coated...is there any good reason to do this to a toda header? will i see any gains from doing it? is it worth paying for? just wondering since it would be alot harder to jet coat it after i install it..heh. just wondering if anyone thought it was worth doing.

 

I have no experience from it but from what other members have to say: it is worth it

 

I just got my Hytech header coated - huge difference in underhood temps.

 

if you have the cash, definitely JetHot coat them... stay cooler, last longer. Just make sure to chase (clear w/ a tap) the threads in anything before you install as the coating can build up in threaded holes.

 

how much does this cost?

 

I want to add to this question. What about coating and then using header wrap?

 

my jdm itr 4-1 cost $200 to coat.




[Modified by ajchen, 10:03 PM 3/5/2003]

 

why?
coating acts like the wrapping except it looks better.

jet hot did my header. cost $165 with shipping included from mississippi.

here is a pic. its called sterling silver finish. looks great but after awhile that nice shine goes away due to the heat.

 

show baby......

 

I agree...here is my post:

Link:
https://honda-tech.com/zerothread?id=171165

I just wanted to show all of you an example of what my header looks like after it was coated by HPC Coatings. The process took ~2 weeks total, which includes me shipping the header to them. The normal charge is $155 to have the header coated, there was an additional charge for them to strip the header as their product wont stick to the carbon of the exhaust $20, normal headers are fine, however the HyTech is ~8.5" longer than a standard header, so I incurred an additional $20 charge for having a "four cylinder race header" and shipping was $20.

My reasons to use HPC Coatings is because they are the original coating company which was started by an engineer, they produce all of their coatings in house, they have excellent customer servce, I had spoken with them at SEMA 2000, and IAS 2001, their work has a lifetime warranty, within 3 years free recoat, after 3 years 50% charge...and after all of this reseach into the company, it also happened to be the same company that John at HyTech recommended.
Austin

Packaging...






Before coating...


After coating...




Before coating...


After coating...


Pics of the interior of the header tubes...


And here are HPC's way of taging the products that they coat.

 

Take a look at the header and then stick it back in the box and send it out to get coated.
BTW "just wondering since it would be alot harder to jet coat it after i install it"--> Has to be done off the car and at the coating shop.

 

heat wraps dont' work so well huh

 

well, i meant that it would be alot harder after install to yank it off again and send it out instead of doing it first..hehe...solly!

 

you will see cooler exhaust temps, but i was under impression that its better to keep your exhaust temps higher - allowing exhaust gasses to exit faster.

besides n/a manifold doesn't get as hot as turbo manifold.

 

cooler underhood temps not cooler exhaust temps


I would go with HPC whey did my JDM ITR 4-1 and if you like the bling bling silver they sell a polish to keep it looking brand new.

 

kinda thought about that after i posted

either way,

wouldn't heatshield/wrap do a better job vs jetcoating?

 

The whole point is to limit heat transfer of the hot exhaust gases to the inner walls of the exhaust manifold. The heat ideally passes through the pipe and out the end instead of radiating into the walls of the manifold. If the heat energy of the gas is radiated into the manifold walls it cools and it's velocity will slow down because its density will be greater than the gas in the middle of the pipe. This creates turbulence - which is what you don't want.

Heat wrap can do the same job as a coating - but it's not bonded to the metal - so it's slightly less efficient.

Heat wrap also looks like *** in a couple of months.

 

Doesnt coating or wrapping your header destroy your cat? I've always heard that all of the extra heat that is absorbed is passed on to your cat, heating it up much more rappidly. Is this true or not?

 

I've heard the same thing.

 

Does this jet coating place have a website? The system sounds amazing.

 

http://www.hpcoatings.com/


http://www.jet-hot.com/

 

From the site
WoW


[Modified by itr1244, 12:32 PM 3/6/2003]

 

I read this article in a recent domestic car magazine, check it out:

http://www.carcraft.com/techarticles/80038/

Don't bash me for the link, the article is pretty informative about ceramic coating, Jet Hot's in particular. Jet Hot Coating reduced surface temps by over 50%. Their dyno results were disappointing though, looks like they lost a little with the coating.



[Modified by emr88, 8:15 AM 3/6/2003]

 

Nice article

 

So why pay an extra $200.00 for coating when you lose power?? Just for show? I'll pass.