Quote:
Originally Posted by Rob. Smith
The coating back in the sixties was Aluminized metal spray coating..It was a white rough finish (like 100 grit sandpaper) It was supposed to slow down the rusting. It didn't stop any heat and it got dirty pretty easy. I had it done on my VW exhaust...it looked good till some simple dip poured beer on the hot pipe...it then had a permanent burnt brown stain. 12 Yrs ago I had headers done inside and out on a 351 mustang by HPC and the under hood heat was reduced by 40 deg c. They still look good today.
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I had the white rough finish on my second car, would never do that again.
I have had silver ceramic coating from Custom Coatings in Brisbane, for 3 cars now, all very durable, they all still look like the day I fitted them.