Exhaust Colours

I like "Metalizers" for things like that. Burnt Iron is a common color, and you should be able to find some somewhere.

Look at historical photos of the engines in use. Many times the model companies recommend painting exhaust manifolds black, but in reality they were frequently made from stainless steel tubing. The blackening came from soot, dirt, burnt engine oil, etc. I prefer to use stainless steel metalizer and then blacken them with black chalk or translucent paint such as Tamiya "Smoke". Burnt Iron also works well since it has a metallic sheen to it. It just depends on how much of a weathered look you are going for.

Gunze Sangyo has Burnt Iron in its Hobby Color line (aqueous acrylics range). You can find it at well-stocked LHS's. Hope this helps.

Cheers,
onyan

Once again you have come up with the answers I so soreley need!
I'm going to look for a Gunze Sangyo stockist in the UK.
Cheers!

Harry
Here are a couple of B17 exhausts I shot last month. They'll give you an idea of color and pattern.

If you're making a modern turbine powered aircraft, you should note that the inside of the exhaust is usually soot covered and totally flat black.

On fighter jets, this soot/carbon build up sometimes have a slight pink/brown hue to it. but for most stuff, FLAT BLACK on the inside for the correct effect.

Model Masters (Testors) makes several flavors of burnt metal colors... burnt iron, burt metal, I think burnt aluminum as well... each has a little different hue to it so you could do some interesting things with them... best of all you can buy them online!

I have mixed my own my mixing equal parts of flat black, alum or steel(do not use silver) and copper. It is close to MM burnt iron.
John
Helicopters don't fly, they beat the air into submission