[Healeys] Intake manifold finishes
boyracer466 at gmail.com
Wed Feb 22 18:00:20 MST 2017
I suggest you consider media blasting your manifold. Depending on the media
you use you will get a different patina. Do not use aluminum oxide or any
other really aggressive media as it will pit the aluminum. If you use good
quality spherical glass beads it actually peens the aluminum. You get a
really nice patina and it will resist oxidation, look cleaner and maintain
that patina. Any coating or paint will not give you that naked aluminum
look that is so natural. And, those glass beads that Harbor Fright sells
are not the kind of quality beads I'm taking about.
On Sun, Feb 19, 2017 at 9:55 PM, Bruce Steele <healeybruce at roadrunner.com>
> I’m interested in my options for finishing my intake manifold. It was
> powder coated clear 12 years ago, and the coating has yellowed at the head
> flanges from heat, and over the years what look like rust spots have
> developed in the powder coat, which is odd since the manifold is cast
> aluminum (see the attached photo).
> I’d prefer to preserve the natural cast aluminum color, and I’m not a big
> fan of the chrome or polished look on the intake (my apologies to all you
> out there with nice shiny intake manifolds—it’s just not my taste). I had
> the exhaust manifold Jet-Hot coated in a cast iron gray 12 years ago, and
> they still look great. So, Jet-Hot coating the intake is one option, but
> the color samples they sent me of their lightest grays are all at best a
> medium gray; all considerably darker than their online color catalogue
> indicates. I’m going to call them Monday, but I’m not sure they have a
> coating light enough.
> I also don’t want to paint it, as I know that won’t hold up long term.
> I’m curious about blasting the clear powder coat off and leaving the
> manifold uncoated. How does the “naked” aluminum hold up to the heat?
> What have others done? Your experience is appreciated.
> Bruce Steele
> Brea, CA
> 1960 BN7
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