powder coat Muffler

[022spa]

I have a nice Dansk mild steel muffler that i Blasted clean with media. I would like to paint it gray or satin Black. I have heard of using BBQ paint and other high temp paints but would really like to have the durability of Powder coat. I called my powder coater and they said they don't have a high temp paint.
How hot does the muffler get? Has anyone powder coated a muffler in the past?

[gshiwota]

Don't do it. Powder coating will not hold up on a muffler. There are special powder coatings that can withstand the high temp environment, but typical job-shop coaters won't spray it because it takes special equipment. Standard powder coatings will turn to ash under high heat.

I was a powder coater for 7 years and powder coated the muffler on my 356. It looked great for about 2 hours before the coating started to ash off.

The best thing for mufflers and headers is to JetHot coat. It's great looking but this is expensive stuff.

In my experience the best low cost professional coating for mild steel is to have the exhaust aluminized. This is a process where they spray on a molten aluminium coating to the part. The finish is a really rough aluminium color (think, tin-foil + stucco). This holds up well to very high heat and maintains it's color well. I ended up aluminizing my 356 exhaust and it's held up very well for the past decade.

Thanks

Gabe

[gshiwota]

I guess I didn't really answer your other questions... typical powder coatings are good to about 400 degrees F. Exhausts can get to 700+ degrees - Porsche exhausts get really hot since they are so close to the motor.

BBQ spray paint should also work but it won't stop rust like aluminizing. I'd aluminize that muffler and spray paint over it (if you want a dark color) and you shouldn't have to worry about the spray paint flaking off or the muffler rusting from the outside.

[022spa]

Thanks for the advice
Im in San Clemente,
Any local locations to have this done?

[911pcars]

I've been running powder-coated HEs and a factory muffler for the past 10 years, before ceramic coatings were an economical option. The HE's and muffler are still good. The exhaust system is probably rusting faster from the inside out. I think there are heat-resistant PC materials for this application.

Pyramid Coatings in Sun Valley (So. Ca.) did mine way back. A key to this procedure is to have scrupulously clean base metal. Compare prices with ceramic coating. Today, I would recommend that process over powder-coating. Ceramic coating can be applied to the inside as well, but it's gotta be clean.

Sherwood

[jhubs]

The BBQ paint does not work either...ask me how I know

Jerry

[RWebb]

check out the stuff that Eastwood makes - it 'rubs in'

[azasadny]

I painted my stock muffler with Wuerth hi-temp paint from Pelican almost 2 years ago and it still looks perfect, no flaking, peeling or bubbling...

[Pete000]

Any shops in LA CA do the ceramic coating or the Jet Hot ?

[rfuerst911sc]

Don't limit your search for just Jet Hot as that is a " brand " of coating but not the only one. I did a search here in Orlando for " ceramic coating " and found a local vendor. He told me that all the vendors out there including Jet Hot buy their ceramic material from one manufacturer in California. My local guy coats mufflers for $70.00.

[esample]

Originally Posted by azasadny

I painted my stock muffler with Wuerth hi-temp paint from Pelican almost 2 years ago and it still looks perfect, no flaking, peeling or bubbling...

I only did mine a few months ago, but same results so far. Used Wuerth's also. Anything more would be a waste of $$ for me. YMMV.

-e.

[jtratza]

I'd go with the "jet hot" but have never used it. I bought a few spray cans of VHT paint (very hot temperature) and bead blasted the exhaust cross over pipe and headers and then used the spray paint according to the instructions. These meant curing the paint in the kitchen oven (which meant evacuating the house because of the smell). The piant still looks great after 2.5 years. I also painted the cat bypass but didn't bead blast it and some paint has flacked off. I may get it chrome plated at a buddies shop this time for grins. From what I've read the "jet hot" coatings hold up well and while the paint has held up well the price difference between paint and "jet hot" at $70 is worth it.

[jtkkz]

We have the new powder coat in 1000 degrees in black.. I had my muffler in my car now for about 2000 miles... so far so good...

www.sycipdesigns.com

Ceramic coating is still the best....

[Dennis Kalma]

I painted my muffler with Wurth Zinc paint....it has been only 14 years so I am not sure about the long term, but so far it still looks like the day I painted it. If you don't mind flat battlship grey it should be ok...

Dennis

[911s55]

Originally Posted by RWebb

check out the stuff that Eastwood makes - it 'rubs in'

Eastwood high temp coating, 1,200' spray or foam brush application.
Stainless grey for early cars (mine) and I have used black as well.
Good product

[gshiwota]

Just spoke to my brother who runs the powder coating shop I used to work at and he recommends Zinc Nation in Anaheim for metalizing. He refers customers to this shop and says he has had very good feedback from customers he refers there.

Here's their info. www.zincnation.com



Gabe

[88-diamondblue]

I used VHT high temp paint on my exhaust. I used clear which turns a bronze color after it get very hot but has not flaked off and has not been affected by anything. These have been done in clear and were baked according to VHT instructions.


You can see how the clear coat bronzed after baking and has gotten slightly darker with use.

[911s55]

Michael, nice results!
Is that clear over stainless?

[88-diamondblue]

Yes it is. The muffler has darkened a little more than I wanted but the HE's have stayed just about like the picture after 8000 miles.

[75blkcarrera]

Try this web sight. They have high temp coatings that can be applied and air dried or baked.
www.caswellplating.com