A12 Aluminum intake manifold restoration

A12 Mopar Discussions

  1. pro-streeter

    pro-streeter Well-Known Member

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    Would like some ideas or ways to clean my Edelbrock A12 manifold. I would like to return to it natural aluminum finish. I understand painted engine color would be correct for 69 1/2 A12 cars. I have used glass bead on other manifolds with good and some cases great results. These original castings tend to have a smoother cast finish than most later versions. I will use what is needed to protect all machined surfaces whatever the method.
    Thanks in advance
     
  2. flypaper

    flypaper FBBO Gold Member FBBO Gold Member

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    Bead blasting aluminum is risky because the media can and will lodge in the pores. Great on steel or cast iron, not recommended on cast aluminum.
    here are a few other ways to go

    a needle scaler will work
    aluminum wheel cleaner
    Coil cleaner(the stuff you spray on AC coils before you hose them clean)
    steam pressure washer
     
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    • moes

      moes Well-Known Member

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      I like to use walnut shells instead of glass beads in my blast cabinet. They dont etch the aluminum like glass beads do.
       
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      • Stanton

        Stanton FBBO Gold Member FBBO Gold Member

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        Needle scalers don't get into all the nooks and crannies AND they don't do a very good job of duplicating the original finish. In fact, I've never seen anything yet that could produce that "as cast" look. The closest I ever came was on an original unmolested max wedge crossram that was only suffering from oxidation. I gave it a very fast once over with aluminum oxide and it was the cat's ass but it still didn't glitter like a new "out of the box" Eddy intake!!
         
      • Lionized

        Lionized Well-Known Member

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        Soda blast.
         
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        • Bill Monk

          Bill Monk FBBO Gold Member FBBO Gold Member

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          I cleaned mine with a stiff bristle brush and purple stuff degreaser then ran it through the dishwasher. (do not attempt this if the wife is home). I did repaint mine though but it came out great
           
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          • biomedtechguy

            biomedtechguy FBBO Gold Member FBBO Gold Member

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            :thumbsup:
            :rofl:
             
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            • dadsbee

              dadsbee FBBO Gold Member FBBO Gold Member

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              Be careful.. no she didn't catch me, but our water turned my wheel light brown... beerestoration2017 653.JPG
               
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              • Stanton

                Stanton FBBO Gold Member FBBO Gold Member

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                At the Detroit Autorama a few years back I was admiring a BEAUTIFUL 32 Deuce and mentioned the fact I liked all the "raw" aluminum (blower, valve covers, etc) and asked how they got it all looking the same consistent color. The owner's wife said he ran it all through the dishwasher WITH detergent. Now most soaps are Alkali so there will be a reaction with the aluminum. I didn't ask if they'd coated it afterwards but I think it would be a necessity to stop corrosion which, if you know anything about bare aluminum, occurs almost immediately.
                 
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