Painting engine bay components

[Exile]

I have never ever painted an exhaust manifold (or fitted a chrome tail-pipe extension 😜 )


This is where I miss Mr Topknot's views.   

[Alan Drover]

Far from painting the exhaust manifold, there is some benefit in wrapping the exhaust (this will hide the rust).

From the Internet:
Is it worth wrapping the exhaust manifold & downpipe?
From improving performance and fuel efficiency to reducing heat damage and minimising noise, it's clear that incorporating exhaust wrap into your vehicle's exhaust system can significantly impact its overall performance and longevity.

pom

Far from painting the exhaust manifold, there is some benefit in wrapping the exhaust (this will hide the rust).

From the Internet:
Is it worth wrapping the exhaust manifold & downpipe?
From improving performance and fuel efficiency to reducing heat damage and minimising noise, it's clear that incorporating exhaust wrap into your vehicle's exhaust system can significantly impact its overall performance and longevity.

As I stated previously cast iron manifolds MUST NEVER be wrapped. It leads to overheating, distortion and cracking of the casting. It's ok for stainless steel but this fact isn't mentioned.
Another internet fairy tale peddled by so called "ex spurts!" (and I'm definitely NOT one but I do know this).

[diffwhine]

Personally, I've never really seen the point of painting something which is designed to get very hot. We used to get quite a few Defender customers complaining that their turbo on the D4 and 200 TDI engines had gone rusty and wanted them changed under warranty...

[Alan Drover]

I can remember the old fashioned ovens with a fire grate attached, kitchen ranges I think they were called. These were invariably coated with black lead at various intervals. I tried it on an exhaust manifold years ago and it did stay on for a while