Exhaust blackout, help me understand! - NCRS Discussion Boards

Exhaust blackout, help me understand!

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  • Justin B.
    Expired
    • March 1, 1996
    • 478

    Exhaust blackout, help me understand!

    I know and understand why the judges want to see the blacking out of the exhaust. I guess this was part of the underbody blackout procedure at the factory on the assembly line. My confusion is if the judges want to see evidence of the underbody blackout then wouldn't it be obvious that the assembly line worker, while blacking out the exhaust would also have black overspray on the floor around the exhaust? You know they didn't tape up the floor before shooting the paint. Every Top Flight car that I see has the exhaust painted black but no overspray on the floor around it. Please explain how this process of restoration gets full credit although we should all know that the factory didn't take the time to cover up the underbody floor. Wouldn't/shouldn't this be just as much of grounds for deduction as no painted exhaust? Both methods are obviously signs of over-restoration, right?
  • Ray G.
    Extremely Frequent Poster
    • May 31, 1986
    • 1189

    #2
    Re: Exhaust blackout, help me understand!

    Justin;
    If you writing about C2 and later, the " chassis black out to mufflers" was completed just before the "body drop" onto the chassis.

    I believe '63, early on, was done with a mitt by hand. Maybe a '63 person could chime in here.
    And when you get the choice to sit it out or dance
    I hope you dance


    Comment

    • Donald H.
      Extremely Frequent Poster
      • November 2, 2009
      • 2580

      #3
      Re: Exhaust blackout, help me understand!

      It was my understanding from what I have read on this forum and elsewhere for C1s is that the exhaust were on the chassis and black out was applied before the body drop. On my 1960 I blacked out everything including the clamps and brackets that are mounted on the frame to hold the exhaust in place. However, I did not black out the exhaust tips and the clamps holding the tips to the rear pipes. I don't know if this is correct, so I guess I find out the first time I have the car judged. There are some pretty good pictures in Nolan Adam's C1 book. Some of the very early C1s and a decent one of a 62 body drop on page 335 that sure looks like the exhaust are already black.

      Don
      Don Harris
      Current: 67 convertible Marina Blue L79
      Former: 60 Red/Red, 2x4, 245hp (Regional and National Top Flight 2013), 66 coupe Nassau Blue, L79 (Chapter and Regional Top Flight 2017)

      Comment

      • Alan D.
        Extremely Frequent Poster
        • January 1, 2005
        • 2038

        #4
        Re: Exhaust blackout, help me understand!

        "'63, early on, was done with a mitt by hand."
        PLEASE PLEASE don't start that nonsense again!

        Comment

        • Ray G.
          Extremely Frequent Poster
          • May 31, 1986
          • 1189

          #5
          Re: Exhaust blackout, help me understand!

          Originally posted by Alan Drake (43261)
          "'63, early on, was done with a mitt by hand."
          PLEASE PLEASE don't start that nonsense again!
          Sorry Alan, I didn't realize the statement was incorrect. Where did the idea start?
          Ray
          And when you get the choice to sit it out or dance
          I hope you dance


          Comment

          • Justin B.
            Expired
            • March 1, 1996
            • 478

            #6
            Re: Exhaust blackout, help me understand!

            I understand the process now, thanks for your help!

            Comment

            • William F.
              Extremely Frequent Poster
              • June 9, 2009
              • 1363

              #7
              Re: Exhaust blackout, help me understand!

              On a '62, is the entire exhaust system, pipes, mufflers, tailpipes painted black and around entire pipe, muffler, or were just the top parts painted by worker spraying paint downward, not hitting bottoms?

              Comment

              • Mike E.
                Extremely Frequent Poster
                • February 28, 1975
                • 5138

                #8
                Re: Exhaust blackout, help me understand!

                Frame was inverted, so sprayer, painting down, was hitting the underside, not the top.

                Comment

                • Ray G.
                  Extremely Frequent Poster
                  • May 31, 1986
                  • 1189

                  #9
                  Re: Exhaust blackout, help me understand!

                  Can we get Carlton Colclough in on this discussion ?

                  And when you get the choice to sit it out or dance
                  I hope you dance


                  Comment

                  • Terry M.
                    Beyond Control Poster
                    • September 30, 1980
                    • 15601

                    #10
                    Re: Exhaust blackout, help me understand!

                    Originally posted by Ray Geiger (9992)
                    Sorry Alan, I didn't realize the statement was incorrect. Where did the idea start?
                    Ray
                    The storya I have heard is that the "mitting" story originated with two prominent NCRS members (membership numbers below 100) as a joke and it just got out of hand. It is now urban legend.
                    Terry

                    Comment

                    • Robert G.
                      Expired
                      • May 31, 1990
                      • 429

                      #11
                      Re: Exhaust blackout, help me understand!

                      Originally posted by Terry McManmon (3966)
                      The storya I have heard is that the "mitting" story originated with two prominent NCRS members (membership numbers below 100) as a joke and it just got out of hand. It is now urban legend.
                      Are you telling me the genuine assembly line corvette blackout mitts I bought on ebay are fake? There's another 1000 dollars down the drain.

                      Comment

                      • Ray G.
                        Extremely Frequent Poster
                        • May 31, 1986
                        • 1189

                        #12
                        Re: Exhaust blackout, help me understand!

                        Originally posted by Terry McManmon (3966)
                        The storya I have heard is that the "mitting" story originated with two prominent NCRS members (membership numbers below 100) as a joke and it just got out of hand. It is now urban legend.
                        There are many members who believe "mitting" existed. Since this thread started I received messages from two.
                        And when you get the choice to sit it out or dance
                        I hope you dance


                        Comment

                        • Mike E.
                          Very Frequent User
                          • June 24, 2012
                          • 920

                          #13
                          Re: Exhaust blackout, help me understand!

                          Originally posted by Mike Ernst (211)
                          Frame was inverted, so sprayer, painting down, was hitting the underside, not the top.
                          Mike,
                          I thought chassis was flipped by the equipment shown at the bottom of this image which would have been prior to the blackout operation. I must have been mistaken.



                          Mike

                          Comment

                          • Ray G.
                            Extremely Frequent Poster
                            • May 31, 1986
                            • 1189

                            #14
                            Re: Exhaust blackout, help me understand!

                            John Hinckley did a 2011 "paper" on C2 assembly process which explains the muffler blackout as the last step just before the body drop.
                            And when you get the choice to sit it out or dance
                            I hope you dance


                            Comment

                            • John H.
                              Beyond Control Poster
                              • December 1, 1997
                              • 16513

                              #15
                              Re: Exhaust blackout, help me understand!

                              Originally posted by Ray Geiger (9992)
                              There are many members who believe "mitting" existed. Since this thread started I received messages from two.
                              I worked there. "Mitting" never happened. Chassis blackout was done near the end of the Chassis Line, just prior to Body Drop, using airless spray equipment fed by air-driven Johnstone pumps in 55-gallon drums on both sides of the line.

                              Comment

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