Quote:
Originally Posted by deansbimmer
I don't suggest attempting to coat the inside. It's too difficult to prepare the magnesium for good adhesion, and I don't see coating the inside as being successful long term even if you were able to get the surface perfect. The original coating is a two part high temp ceramic coating so that would be my first choice (I use Cerakote), although PC works well when well prepped. The factory didn't fully coat the inside. There is overspray inside, which is what flakes off first.
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Yeah I know someone here in Canada that does a very good Cerakote, if you say that works then I will probably take my valve covers to the guy.
I assume you'll need to sandblast the inside and outside of the valve cover then cerakote it completely both inside and outside?