Curti Posted January 20, 2011 Share Posted January 20, 2011 When did the manufacturers change over from metal inner tube stems to rubber on passenger cars? Link to comment Share on other sites More sharing options...
Richard Lichtfel Posted January 20, 2011 Share Posted January 20, 2011 1932. I had a 1931 that had the rubber stems and was docked points, I had to replace the tubes with metal stems. The judges told me 1932 is when the change was made. Link to comment Share on other sites More sharing options...
Curti Posted January 20, 2011 Author Share Posted January 20, 2011 I suspect that is in the AACA judging guidelines then? Link to comment Share on other sites More sharing options...
MCHinson Posted January 20, 2011 Share Posted January 20, 2011 From the Judging Guidelines:13. Valve stems must be metal prior to 1930and must be the same as originally suppliedon the vehicle.Documentation maybe required.Fords will have metal valvestems through 1934. Rubber valve stemsmay be used on any vehicle,prior to 1935,that was originallyequipped with metalstems, if completelycovered with authenticvalve cover, atop a retainernut fastenedto the rim. In all cases, it must appear asoriginalequipment.14. Plastic valve caps will receive a one pointeach deduction if used on any vehicle priorto 1951. “Red Crown” valve caps are notacceptedon any vehicle. Red plasticvalvecaps (not “Red Crown”) will be acceptedon Whizzermotorbikes. Link to comment Share on other sites More sharing options...
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