Re: ceramic coating and 2-piece EM...

[Gerard <gerard@poboxes.com>]

> The accessories might be safe but I'd be concerned about the manifold ...
> decorative coatings are fine but unless you are prepared to replace the
> manifold at regular intervals, I certainly wouldn't have the outside ceramic
> coated.  Insides are fine, since this keeps the heat away from the manifold,
> but coatings on the outside trap heat in the manifold itself and in some
> instances, this can drastically shorten its life.  No BTDTs with cast-iron
> Audi manifolds but I've got many friends with Detroit V8s who've learned this
> lesson first hand, especially those running steel headers...

I wouldn't want to coat the outside only. Then the heat entering the
manifold
from the inside will be trapped there more by the coating. Maybe if
coating
the outside only one could use some of that heat dispersing coating that
helps heat dissipate. Maybe not. I think if I (or anyone) does this then
it
must be a complete job inside and out, and also do the turbine housing.

G.