Powder coat ?s.

Will powder coating hold-up on my brake drums? I'm gonna powder coat a set of wide-5s and plan on a contrasting color for the drums.

 

Depends how hot they get.

 

the way Pete drives.... plenty.

 

Powder coating is applied at approx 400 degrees F. and it's conceivable you could reach that.

Even so, the powder guy told me that the drum brakes he coated didn't have any problems.
Before you think he was just giving advice to sell stuff, he wasn't.
Honest guy and he steered me into some other solutions about things rather than powder.

You may want to give some thought to using a high temp exhaust paint like VHT or the like.
I shot my 32's rear drums with some VHT flat black and they're doing fine.
Gloss would have been better, but I don't think they made it in 93 and not sure they have a gloss now.

I do understand that powder manufacturers were working on a powder header coating a few years back and if they have that now, that would be the way to go.

Fwiw - the backing plates are powdered, but the brakes on my 32 have never been used to their max except for a couple of draggin' it down from 70 or so.
Nothing like you'd get running the mountain twisties.

 

My drums on the Hell Camino were painted bright red VHT caliper paint. (vhtsp731) and did fine for highway and city driving. I started getting discoloration at the dragstrip... slowing it down from 125mph was too much.

I sprayed it on real heavy and used 2 cans per drum. Almost looked like powder.

Almost.

 

My super heavy 1300 lb car barely goes the speed limit! Seriously, I do get it out on the e-way and stay with traffic. Gotta get er down from 70+ quite often. I think I'll try it. If it falls off, I'll paint them.

 

flatheadpete,
I looked in my Eastwood catalog. 400 F is the curing temperature for regular powder coat, just like C9 says. Eastwood sells some high temp powder they say is good to 1000 F. It only comes in satin black, stainless steel, factory gray and silver. They also sell some two-part urethane for brake calipers that you can brush on that comes in colors. $40 to cover 4 sq. ft. They also have a spray can of brake caliper/drum paint that comes in red, blue, purple, black, silver and yellow. 1 can covers 6 sq. ft. at $9.00 ea. Both of these last two are supposed to be good up to 900 F. I've never used any of these products.

My guess is that most normal driving will keep you under or around the 400 F temperature in normal places. Places like Arizona with it high summer temperatures will generate higher brake and tire temperatures. This is due to the road surfaces reaching 135-140 F in the summer with air temperatures at 115 F. Hope this helps.

 

Epoxy prime then single stage Eurothane from PPG does fine on engine blocks, heads and intakes. Do the drums get hotter than heads?

 

Pete call jeff at multiblast in montrose he does powdercoat he'll let you know if it wiil stay on. I think theres a goodyear shop on hill rd that does it too.

 

If your car really is 1300 lbs and you don't race it more than likely you won't have a problem.

 

My powdercoater said no problem... unless there is extreme braking issues. He does conventional drums all the time and never had any problems.

(geeze... should have thought about calling him yesterday. Sorry. I never claimed to be smurt... uh smart.)