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Exhaust Down Pipes

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HealeyDave

HealeyDave

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OK, my next question, as I ramp up work on my long dormant resto on the BN7: The exhaust down pipes, or as Moss calls them 'front pipes': the 2 exhaust pipes that run down from the exhaust manifold to the mufflers. Mine are currently very nice bare metal, and I am wondering what might be a good way to treat them for both corrosion resistance and heat control?

Should I paint with hi-temp paint and wrap with exhaust wrap? Jet-Hot ceramic coating is another option. Others?

Thanks,
Dave
 
If you dont go new, you could have them ceramic coated....I would not recommend wrap, moisture can get trapped speeding up rust.....

HealeyDave said:
Ok my next question, as I ramp up work on my long dormant resto on the BN7. The exhaust down pipes, or as Moss calls them 'front pipes': the 2 exhaust pipes that run down from the exhaust manifold to the mufflers. Mine are currently very nice bare metal, and I am wondering what might be a good way to treat them for both corrosion resistance and heat control?
Should I paint with hi-temp paint and wrap with exhaust wrap? Jet-Hot ceramic coating is another option. Other?
Thanks,
Dave
Click to expand...
 
Jet-Hot

jh_headers.JPG
 
Mine are, and over nine (>9) years later, they're still gas-tight.

I didn't realize how long it's been since they were coated (previously a used set, blasted and cleaned as part of the process) and as far as I know, the appearance is still acceptable; I guess I need a follow up picture...
 
I have Kirk headers as in Randy's picture. I was concerned about coating thickness affecting the slip joint on the #1 tube. The jet-hot guy told me no problem - said the coating thickness is about like water.
 
Randy Forbes said:
Mine are, and over nine (>9) years later, they're still gas-tight.

I didn't realize how long it's been since they were coated (previously a used set, blasted and cleaned as part of the process) and as far as I know, the appearance is still acceptable; I guess I need a follow up picture...
Click to expand...
Not as shiny as they once were, but I've no reason to think that the finish, if desired, could be polished back to brilliance.

I've used Jet-Hot to coat the headers of several BMWs, and I've always been satisfied with the performance and their claims.

IMG_5282.jpg


IMG_5286.jpg
 
steveg said:
I have Kirk headers as in Randy's picture. I was concerned about coating thickness affecting the slip joint on the #1 tube. The jet-hot guy told me no problem - said the coating thickness is about like water.
Click to expand...
I wondered about that slip joint. Is it suppose to slip?
 
HealeyDave said:
Ok my next question, as I ramp up work on my long dormant resto on the BN7. The exhaust down pipes, or as Moss calls them 'front pipes': the 2 exhaust pipes that run down from the exhaust manifold to the mufflers. Mine are currently very nice bare metal, and I am wondering what might be a good way to treat them for both corrosion resistance and heat control?
Should I paint with hi-temp paint and wrap with exhaust wrap? Jet-Hot ceramic coating is another option. Other?
Thanks,
Dave
Click to expand...
You can have them powder coated with heat resistant powder paint
 
steveg said:
Eastwood sells hi-temp ceramic paint in spray cans that cures as soon as you fire the engine up. I used it on my TR6 manifold after sandblasting and it works great!
Click to expand...
I like Eastwood products and most of their paints work great with the exception of their hi-temp header coatings. They failed for me, but I run a pretty hot....Jet Hot is the only coating that has held up under race conditions. I went with the top shelf offering. > Heat Coating for Headers & Exhaust | Jet-Hot — Jet-Hot <
 

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I have used both Jethot and the Eastwood coating. I think the Jethot works better on new pipes than having old ones blasted and coated. The eastwood seemed to cure easier.
 
 
regular hi-temp worked for me, with good prep
 
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