1966-1967 coupe Rear Window interior Moldings - originals colored plastic or painted? - NCRS Discussion Boards

1966-1967 coupe Rear Window interior Moldings - originals colored plastic or painted?

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  • Scott S.
    Extremely Frequent Poster
    • September 11, 2009
    • 1961

    1966-1967 coupe Rear Window interior Moldings - originals colored plastic or painted?

    Originally posted by Nick Culkowski (30922)
    Scott,

    We need to start another thread for the coupe rear window garnish moldings.

    Could you please start another thread and re-post your comments, photos and questions...
    Question: are original 1966-67 coupe rear window garnish moldings colored plastic, or painted to match interior color? The 67JG doesn't say, but the 66JG says not painted and to verify by looking from the outside through the rear glass (p. 18).


    The coupe rear window garnish moldings are called out on UPC 1ASM-F19 in the 1966 AIM, and 1ASM-F20 in the 1967 AIM (same GM 3847888 p/n, one part number for two different molding pieces, by the way).


    My presumed originals are colored on both sides, as are the GM NOS examples (I have one black, one brown). The brown NOS rear window molding has a few nicks, showing yellowish-white. Here are a few pictures of the presumed original rear window moldings, showing yellowish-white where chipped or cracked:[/QUOTE]
    Attached Files
  • Scott S.
    Extremely Frequent Poster
    • September 11, 2009
    • 1961

    #2
    Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

    A few more pictures of my (presumed) originals. Car has been in the family since 1976, not driven since approximately 1993. I have over 100 receipts for parts and labor going back to 1974, there is nothing in the receipt file about rear window garnish moldings being replaced.

    No part numbers or any other markings molded into the back of these presumed originals, unless they are hidden under the black sealant running the full length down the center of each piece.
    Attached Files

    Comment

    • Scott S.
      Extremely Frequent Poster
      • September 11, 2009
      • 1961

      #3
      Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

      And a few pictures of NOS examples, one brown (first two pictures) and one black (last two pictures. Both examples have an AC Delco style date (sunburst with number "88" in center, indicating 1988) molded into the back side. The brown molding has a couple rough spots where the brown has chipped or rubbed away, revealing yellowish-white underneath (see 2nd picture below).

      The black NOS example has the letters "A B S" (Acrylonitrile butadiene styrene?) and "P - O - F" molded into the plastic (see picture 4), while the brown NOS example does not have the letters "A B S" (or "P-O-F") molded into it. The black NOS example appears to be black plastic all the way through.
      Attached Files

      Comment

      • Bill H.
        Expired
        • August 8, 2011
        • 439

        #4
        Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

        Scott, my early 67, teal, white painted on both sides. I scraped a bit of paint off to make sure. I'll have to take a look inside the car but I zero of the black sealant on the molding.
        Attached Files

        Comment

        • Scott S.
          Extremely Frequent Poster
          • September 11, 2009
          • 1961

          #5
          Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

          Originally posted by Bill Hetzel (53669)
          Scott, my early 67, teal, white painted on both sides. I scraped a bit of paint off to make sure. I'll have to take a look inside the car but I zero of the black sealant on the molding.
          Bill,

          Thanks for the reply, another data point for painted moldings. Are there any part numbers or other markings molded into the backside?

          The "sealant" (for lack of a better descriptive term) is still fairly soft, feels like rubber. It's strongly attached to the back side of the molding, but there is no adhesive quality to the exposed side. The car was built January 1967, maybe it was added at some point for reducing potential noise from vibration?

          Comment

          • Bill H.
            Expired
            • August 8, 2011
            • 439

            #6
            Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

            Originally posted by Scott Smith (50839)
            Bill,

            Thanks for the reply, another data point for painted moldings. Are there any part numbers or other markings molded into the backside?

            The "sealant" (for lack of a better descriptive term) is still fairly soft, feels like rubber. It's strongly attached to the back side of the molding, but there is no adhesive quality to the exposed side. The car was built January 1967, maybe it was added at some point for reducing potential noise from vibration?
            I took a quick look for p/n's last nite, I look again today. And I want to look in the car for that sealant. No numbers on the molding but I'll look again. And there's zero evidance of sealant on the inside of the moldings.

            Comment

            • Gene M.
              Extremely Frequent Poster
              • March 31, 1985
              • 4232

              #7
              Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

              Guys, If you are attempting to determine the originality of molding being painted or color molded you need to be looking at ORIGINAL PIECES ONLY. The nos stuff is just that replacement parts, generally made at a different time and may even be a different supplier.

              It is just ridiculous to use nos to justify original.......... Only original is original. Be positive on the origin of your parts prior to presenting as original to aid in judging manual verbiage. There is already too much bogus stuff.

              Comment

              • Scott S.
                Extremely Frequent Poster
                • September 11, 2009
                • 1961

                #8
                Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

                Originally posted by Gene Manno (8571)
                Guys, If you are attempting to determine the originality of molding being painted or color molded you need to be looking at ORIGINAL PIECES ONLY. The nos stuff is just that replacement parts, generally made at a different time and may even be a different supplier.

                It is just ridiculous to use nos to justify original..........
                Gene,

                I agree with you completely, I only post pictures or descriptions of NOS parts as a means of distinguishing between original and service parts, and to identify similarities, to the extent that is possible. If we can determine what identifies an NOS service part and what characterizes an original part, it will be easy to distinguish between the two. Unless one happens to be the original owner of the vehicle, it can be difficult to determine what is original and what might have been replaced sometime along the way.

                With some parts there are clear identifiers. My thought here, based on the evidence so far, was that the original plastic rear window moldings may not have the GM part number molded into the back side, while the NOS examples do, at least by 1988, when my two NOS pieces appear to have been made. If the presence or absence of molded part numbers is in fact a distinguishing characteristic, then this is an easy one. No part numbers on Bill's or mine, and both have yellowish-white plastic under the paint, ergo originals were not formed with colored plastic, contrary to the comments in the 66JG.

                Again, not ever trying to use NOS to justify original, I'm just trying to point out obvious or distinguishing characteristics whenever possible. I can be sure about NOS parts I have bought myself and that came with GM packaging or have GM part numbers on them, but I cannot always be certain about whether a suspect part removed from the car is original or an old service replacement.


                Originally posted by Gene Manno (8571)
                Only original is original. Be positive on the origin of your parts prior to presenting as original to aid in judging manual verbiage. There is already too much bogus stuff.
                Being positive of the origin is the problem, which leads to the investigative and comparative analysis in the effort to make a determination about what is original and what is not. If we had a fleet of time-capsule Corvettes with zero miles to examine at will, it would be easy to answer many of the questions posted on this Forum.

                Comment

                • Bill H.
                  Expired
                  • August 8, 2011
                  • 439

                  #9
                  Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

                  I agree with Gene too. All I can say about the pic I posted is that I bought the car in '73 so I'm "fairly confident" they are origional. The paint also matched the dome light helo which is dated.

                  Scott, the attached (crappy) pic of the inside of the rear window showing window sealant, very little hanging down or where it could touch the molding.
                  Also the dome light helo showing teal overspray. On the inside 1/3 bare glass, 1/3 red primer & 1/3 teal.
                  And a pic of the date code, Can't read the month, it looks like 1968 in the pic but looks like 28 1966 under 10x magnification.
                  Attached Files

                  Comment

                  • Gene M.
                    Extremely Frequent Poster
                    • March 31, 1985
                    • 4232

                    #10
                    Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

                    Scott,
                    You appear to understand the difference. But persons at large have the opinion that an nos part is equal in all respects to the original. It is NOT and that is the issue most over look in the justification of a nos replaced part being 100% correct. It has become a percentage basis of deduction with NCRS of a replaced parts deviation from KNOWN originals.

                    Thank you for restoring my faith that someone understands this fact that nos does not equal original. One needs to history base a part before definition of it's characteristics. When not the ORIGINAL piece so state it. If in question state the "clues" that sway you one way or the other.

                    Comment

                    • Scott S.
                      Extremely Frequent Poster
                      • September 11, 2009
                      • 1961

                      #11
                      Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

                      Originally posted by Gene Manno (8571)
                      Scott,
                      You appear to understand the difference. But persons at large have the opinion that an nos part is equal in all respects to the original. It is NOT and that is the issue most over look in the justification of a nos replaced part being 100% correct. It has become a percentage basis of deduction with NCRS of a replaced parts deviation from KNOWN originals.

                      Thank you for restoring my faith that someone understands this fact that nos does not equal original. One needs to history base a part before definition of it's characteristics. When not the ORIGINAL piece so state it. If in question state the "clues" that sway you one way or the other.
                      Gene,

                      I understand what you mean, and I was careful to refer to the rear window moldings removed from my '67 as "presumed originals" in my opening post, until or unless I can confirm that they are the same as other confirmed originals. They are clearly different from the NOS 1988 GM service replacements in the ways already mentioned above.

                      I'm thinking of repairing and reusing the rear window garnish moldings that were on the car, unless it can be determined that they are not "original", in which case it doesn't make much sense to restore old service replacement parts (usually).

                      Comment

                      • Scott S.
                        Extremely Frequent Poster
                        • September 11, 2009
                        • 1961

                        #12
                        Re: 1966-1967 coupe Rear Window interior Moldings - originals colored plastic or pain

                        Originally posted by Bill Hetzel (53669)
                        I agree with Gene too. All I can say about the pic I posted is that I bought the car in '73 so I'm "fairly confident" they are origional. The paint also matched the dome light helo which is dated.

                        Scott, the attached (crappy) pic of the inside of the rear window showing window sealant, very little hanging down or where it could touch the molding.
                        Also the dome light helo showing teal overspray. On the inside 1/3 bare glass, 1/3 red primer & 1/3 teal.
                        And a pic of the date code, Can't read the month, it looks like 1968 in the pic but looks like 28 1966 under 10x magnification.
                        Bill,

                        Thanks for the pictures, I didn't know the halo panels were dated, the date is a little blurry but it looks like it might be "JUN 22 1966" or "JUN 28 1966" in the same format as the Tire Tub date stamps. If I remember correctly, your car was built early January, same as mine. I'll check my Halo panel more carefully for a date at the next opportunity.

                        If I'm right about our cars being assembled closely together in sequence (mine was built Jan. 11), then at this point I'm guessing that the "sealant" on the back side of my rear window moldings was added by a previous owner, maybe to address a rattling or vibration problem. Otherwise, your rear window moldings appear to be the same as mine, no part numbers, with off-white plastic painted over with interior color.

                        Comment

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