I am looking into powdercoating the plenum and had three questions: Should the underside of the plenum where the plenum meets the lower intake manifold be powdercoated as well? I figure it shouldnt because you want that surface to be a smooth as possible so no air leaks would occur. Also what about the threaded fittings like for the pcv valves? I figure if they are powdercoated inside, they would not thread any more. Also how much did it cost you to powdercoat your plenum? Im thinking of powdercoating it a satin black, or high gloss black.
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Powdercoating the plenum question - zeddiea2714:54:07 06/09/07