Jet Hot - Exhaust Manifold

B

Bill O'Brien

Senior Member
Has anyone else here used Jet Hot to have their exhaust manifold coated?

How she looks pre-new, Jet Hot coated manifold (and some resto work!) and after....
 

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Bill O'Brien said:
Has anyone else here used Jet Hot to have their exhaust manifold coated?

How she looks pre-new coated manifold (and some resto work!) and after....
Click to expand...
What is "Jet Hot"? Is it available for use by us restorers or does it need to be applied by an expert? Thanks. Don/WI
 
Neat !

I dont know "Jet Hot" over here.
I did "Ceramic-Coating" which is heat resistant up to
650`C (sorry - im metric). Looks very similar to me.

I did both manifolds and the carb
(as we do not have fuel-resistant-color over here).

Looks a million and will stay forever :D

Comments used to be:
- Not compatible to judging standards
- Intake should be green in original.

Best regards
Christoph
 

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I have used Jet-Hot on a OT 350 small block Chevy. It was done 5-6 years ago, still looks good. They do pick up some discolorations from being on bare concrete-from the dampness/salts J-H said, but they clean up fine-I use Ceramic stove top cleaner. I would do it again.
 
I'm just cruising your side of the fence - my outfit runs a y-block - but I do have some experience with the JetHot process.

For my dual manifolds it was $225 total and they came back in a weeks time. One of my big reasons for trying it was to cut the underhood temp - which they advertise - and it did so, drastically. I used the "Sterling" finish and while it eventually dulls a bit - it looks a lot like moms silver set. If you buff the iron finish with a sander before you send it off - the coated part looks much brighter/smoother. The parts are finished inside and out. In a test where I put an old iron manifold on the passenger side and the coated version on the driver's - it dropped the surface temperature of the coated manifold by 225° - down from 550° on both sides before the test. Very impressive.

It is available in other colors - like cast iron gray - and when I asked about changing colors one day to get the "restored look" - the fellow said to just send them back and he'd overcoat color on the outside and leave the Sterling on the inside.
 
Jim.Morris2831 said:
Does the coating leave a smooth-looking finish on say an exhaust manifold that has the usual 80+ years of rust wrinkles on it?
Click to expand...


Jim,

The coating would definitely smooth it out a bit but not as good as with a new or non-pitted manifold. It might be a worthwhile investment to purchase a new manifold to have it coated.

I did the manifolds on my CJ5 w a 304 V8 20 years ago.... they still look great 2 decades later! I will get some pics on here soon...
 
It is certainly not cheap. I think I paid around $225 to have my manifold coated. But.... if you think that the manifolds on my Jeep were coated 2 decades ago and still look great it is a worthwhile investment!
 
Jet Hot was originally formulated as a military application. I had my headers coated by them over 15 years ago and they still look very good.....lots of miles. I would recommend you do the clean up work before sending them off.....remove anything you do not want to be seen.......the coating will pretty much telegraph all imperfections. When my headers were coated , any color other than "aluminum" was extra cost. Coating the inside surfaces was also extra. There are a couple of other companies that do similar work....all seem to be very good.
 
I've used several different processes, but Jet-Hot is without a doubt the best. As with anything in life, you get what you pay for.
 
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