Porcelain Intake on my 34 1101

Posted by BuellS2 On 2009/7/30 22:23:33

I am trying to make my intake manifold look shiny. The old porcelain is in excellent shape except that it is slightly dull and a bit flat looking. I heard that glass can be etched using hydrofloric acid as prep for top coating it with a high temp clear or gloss black (Eastwood's 900 degree caliper paint). I tried 320ing the intake and cleared it, and it looked beautiful but paint flaked off. Can I sandblast the porcelain with a mild media or acid etch such that the paint sticks? The manifold looks incredible with a clear coat, it just does not stick. With the high temp paints available I think I can make it look beautiful if I can figure out how to properly prep for paint. I could use a coarser sandpaper but am afraid it will show through the topcoat. I do not want to re porcelain as it is very costly and less durable. I do plan to drive the car daily. Does anyone have any experience with renewing the finish on an intake manifold made of glass?