Powder coating heat exchangers

Has anyone had heat exchangers powder coated?
I think the powder coat would burn off the exhaust sections but that’s not a problem
I’m just wondering how the rest would fair.

 

It’s also interesting that genuine type one heat exchangers have a condensate drain channel/hole at the bottom

 

Mine are rust proofed for life with constant oil drips from rocker covers - they look nice

 

I wonder how you would keep the powder coat from getting on the fins inside. Could be v. smelly.

 

I’d imagine they could be bunged up whilst the powder coat is applied and the bungs removed before they go in the oven.

Someone might pop along and say they had it done and it was a disaster or hopefully that they had it done and everything was fine.

 

I don't think anyone will be looking under there and I am sure you have other stuff to focus on - don’t worry about it is my opinion

 

Why not powdercoat? Ordinary stonechip lasts ages on the outsides.

A leaky rocker cover adds to the protection.

Not much survives on the hot stuff, I would make very sure none of the powder gets inside the shells on the hot pipes where cabin air is heated unless you like breathing interesting breakdown products.

 

I can’t see a reason not too but it’s a good idea to check incase anyone else has been a Guinea pig and already tried it.

 

I had the heat exchangers on both the engines for my fleet powdercoated. The guy I use puts high temp paint on the exhaust section and powdercoats the rest.
I’ll try and get some pics later so you can see what they’re like 1 and 5 years on.


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I had my under tins powder coated recently.
More for preservation than looks. All well so far. Cost £20 each which seemed good value considering they were sand blasted first.

 

^ yep that'd be favourite. I've only used VHT paint on mine but I did split the cases and paint the insides too.

 

Cheers Jim that would be great thanks.

 

I’m putting together a pile of parts to go to the powder coaters anyway
So it’s no extra hassle on my part to have them done at the same time.

 

Have you had them in the oven mark?
Vht paint needs baking at a high temperature to cure the paint otherwise it just flakes off over time

 

No I'm afraid not. I was relying on the exhaust to do the baking, would that not do it?

 

On the exhaust pipe sections yes but the outer casing won’t get hot enough.

Don’t put them in the house oven though the chemical smell given off by curing is awful and will linger for ages.

 

Sounds like the voice of experience speaking there

 

I did use VHT primer first, then the matte black. It didn't say anything on the cans about baking but I'm sure it would improve the adherence.

 

If you dont bake VHT, it wont be there for long.