• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Intake and exhaust manifold powder coating

Share this page

Brosky

Brosky

Great Pumpkin
Offline
Is it feasible to powder coat an exhaust manifold? My intake looks OK, but the exhaust manifold is one rusty looking mess.
 
Powder coating melts at about 400 deg so it want last too long. Try JetHot or similar. Prices are comparable. Color selection is worse...
 
You are absoluely correct and I should have known that from knowing how they remove a bad coat to refinish it. Thanks for the tip on the other process. I'll look into it.
 
Hi,

I don't know that I'd bother ceramic coating (Jetcoat, etc.) a standard, cast exhaust manifold, if that's what you are working with.

IMHO, high temp paint works fine on cast manifolds and can much more easily be touched up at home, if ever necessary. Not to mention it's one heckuva a lot cheaper. Media blasting or certain liquid cleaners can be used to clean up the manifold and remove rust, in preparation for paint (or ceramic coatings).

By the way, Eastwood sells a product that just cleans the manifold and removes the rust, leaving a natural, original style bare metal finish. No paint or coatings, so it can be done with the manifold in place and also can be easily touched up every now and then. I've never used the stuff, but it's an interesting idea. www.eastwoodco.com is their website.

On the other hand, I do think ceramic coating is practical and useful for mild steel tubular headers, if that's what's installed on your car.

/ubbthreads/images/graemlins/cheers.gif
 
Silicone powder coating is made for high-temp applications, withstands 1000F. Cures at 450 instead of 400 for 20 minutes. I have seen it at caswellplating.com and eastwoodco.com. I'm sure lots of other places sell it too. Not anywhere as good as JetHot which is a heat insulator, but good for appearance improvement. Also VHT high-temp paint is good and comes in a lot of colors for cheap!
 
I submitted an RFQ to Jetcoat to see what the pricing will be to do the intake and exhaust mnaifold in their silver color. I'm also starting to think about headers of I decide to change exhaust systems. Here we go again..........a mountain is starting from a molehill. But I guess it's why we have these cars.
 
If it helps while you wait they quoted me $130 for an intake manifold a lot bigger than the one on the TR. They sent me a video too.

How quaint - I haven't seen one in at least 5 years...
 
Thanks....I'll update when I get my quote. I need to get the timing cover seal leak fixed then repaint the block and that should take care of my oil leaks for at least a week. That's when I'll do the manifold project. By then it'll be time for another leak, so............
 
Glass bead is the correct blasting media for the aluminum intake manifold. It will come out looking like new, also good on the thermostat housing.
 
I had my TR3 intake chrome ceramic coated along with the headers. The reason for the intake was because it looks like a well polished aluminum intake and but not too gaudy.
After 1 1/2 years it looks as new. The headers were coated inside as well. This process helps with the exhaust flow. The beauty of ceramics is that it cools faster and offers a barrier to the heat as it leaves the engine by not letting it conduct as much heat outside of the exhaust. You can almost touch the header after a few minutes once coated. Before the coating it was hot for an extended time. Prior ro getting the header coated it was cooking the brake switch and wiring which runs along the fender well. The generator and wiring was also replaced several times since the headers are within inches of generator wiring. In addition I still believe the rebuilt "Bull Nose Starter" suffered from the extreme heat emitted from the headers especially in the summer. I used a header heat wrap used by hot rodders for years before going to the ceramic application. The wrap is not that cheap and requires re-applicaion every two years. In most cases the header has to be removed to re-apply the wrap. As a matter of fact it will decay and blow all over the engine compartment. It also gets all over you when you remove the headers and since it probably some sort of fiberglass I suspect thats why I had a reaction to it. So, I am glad it is gone and for the money I would do it again.
This shop does excellent work and also contracts to do pistons (Tops) and other metal components that need ceramic coatings to reduce heat. <u>www.jcmmachine.com</u>
They also do a black ceramic that looks oem and prevents corrosion for the life of your car. Talk to Charlie at JCM.
Thanks.
 
I have had HPC do a few items on my Sports 6, Local guy's so that helped , Not to mention I have known the guy's for a few years.
I have always been told to go with the silver coating.
https://www.hpcoatings.com/
I will have to get some more pic's up, since the update a while back mine are gone.
Good luck

Here is a pic of the HPC goods all the silver is HPC web page
 
I am pleased with the way my cast exhaust manifold is looking after nearly four years. I had it bead blasted when it was off while the engine was out of my TR7. Then just sprayed it with Hi Temp "clear" Looks very "natural"
 
I did get a price from JetHot for $240 complete, in and out on intake and exhaust manifold. I talked to a local LBC repair shop that has spares of each, so I'll pick out the best and send them off to be done. When finished, I'll swap mine over.
This will take awhile till I get it done, but I'll post pictures of before and after.
 
As I said in my other post about the timing cover seal, it looks as though these three projects will be done at the same time, since the coolant will be drained and I can clean everything with the hood off to be painted on the bottom.
I did get the video today but haven't had time to watch it.
 
HPC gave me a quote for my headers of about $350 to ceramic coat (inside and out). they are expensive! if you get headers or exhaust coated, you want it inside as well as outside. ceramic coatings are to keep the heat in or out. the looks are an added benefit.
rob
 
JetCoat include Aluminum Oxide cleaning inside and out as well as two coats on the interior and exterior of both manifolds.
 
jet hot is not good to 2000+ deg f.
rob
 
no but jet hot 2000 is.
i put it to you that if your exhaust reaches 2000 deg f then you have bigger problems than the ceramic coating...
 
Back
Top