Help with this engine pad authenticity - NCRS Discussion Boards

Help with this engine pad authenticity

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  • Larry E.
    Extremely Frequent Poster
    • December 1, 1989
    • 1677

    #16
    Re: Help with this engine pad authenticity

    Originally posted by Michael Ward (29001)
    Possibly the ghost 7 is an image of the first 7 in the VIN derivative. The tool landed at an angle during the bounce.
    Related Question: Do we not see these "Ghost Figures" on alternators also??? eg: below> Larry
    Attached Files
    Larry

    LT1 in a 1LE -- One of 134

    Comment

    • Joe R.
      Extremely Frequent Poster
      • July 31, 1976
      • 4550

      #17
      Re: Help with this engine pad authenticity

      There is no doubt about the stamp pad being correct. The expert (not me) has spoken on this board and it's real.

      JR

      Comment

      • Edward M.
        Extremely Frequent Poster
        • November 1, 1985
        • 1916

        #18
        Re: Help with this engine pad authenticity

        What am I missing here. Were all of the VIN derivatives characters in a gang holder? If so, how do you get a "bounce" on only one character?
        Splain it to me please.

        Comment

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

          #19
          Re: Help with this engine pad authenticity

          Originally posted by Edward McComas (9316)
          What am I missing here. Were all of the VIN derivatives characters in a gang holder? If so, how do you get a "bounce" on only one character?
          Splain it to me please.
          I thought the same thing...Then I looked at the blown up image that Jack posted above.

          Comment

          • Gary B.
            Extremely Frequent Poster
            • February 1, 1997
            • 7018

            #20
            Re: Help with this engine pad authenticity

            Originally posted by Edward McComas (9316)
            What am I missing here. Were all of the VIN derivatives characters in a gang holder? If so, how do you get a "bounce" on only one character?
            Splain it to me please.
            Edward,

            I think it's a question of tolerances and precision. If one were to create a gang holder with 7 numbers, what are the odds that all 7 individuals stamps come into contact with the surface to be stamped at the same time. Absent micron-level tolerances, the odds are zero. In the case of the stamp in question, one of the 7s was obviously most proud, followed by the 1 as 2nd most proud.

            Gary

            Comment

            • Leif A.
              Extremely Frequent Poster
              • August 31, 1997
              • 3627

              #21
              Re: Help with this engine pad authenticity

              Originally posted by Gary Beaupre (28818)
              Edward,

              I think it's a question of tolerances and precision. If one were to create a gang holder with 7 numbers, what are the odds that all 7 individuals stamps come into contact with the surface to be stamped at the same time. Absent micron-level tolerances, the odds are zero. In the case of the stamp in question, one of the 7s was obviously most proud, followed by the 1 as 2nd most proud.

              Gary
              Gary,
              I think all these guys were "proud"
              Attached Files
              Leif
              '67 Coupe L79, M21, C60, N14, N40, J50, A31, U69, A01, QB1
              Top Flight 2017 Lone Star Regional

              Comment

              • Steven B.
                Very Frequent User
                • April 11, 2012
                • 233

                #22
                Re: Help with this engine pad authenticity

                This is a late 67 300 HP. Other than a couple of items I know weren't supposed to be on the car when I got it, everything else is original or an OEM part. Even the carpets all had their original tags when I replaced them. Flite judged in 89' and 91'.

                P4261200.jpg

                Steve

                Comment

                • Gary B.
                  Extremely Frequent Poster
                  • February 1, 1997
                  • 7018

                  #23
                  Re: Help with this engine pad authenticity

                  Leif,

                  It's an odd use of the word "proud", that I've learned from my Orthopaedic colleagues when describing a total hip replacement position.

                  Gary

                  Comment

                  • Michael M.
                    Expired
                    • February 7, 2011
                    • 186

                    #24
                    Re: Help with this engine pad authenticity

                    Seeing the double strikes, bounce and ghost characters remind me of some of the junk stamps we put out from the Fremont Plant back in the day. Basically, if you could read a number, it was OK. I contributed the Fremont stamp issues to line speed - ours was 47 and hour. It wasn't as easy as you might think to stamp a moving engine, and the operator had other tasks in addition to stamping. When the regular stamp operator was absent, it was a nightmare.

                    I always thought Corvette engine stamps were pristine in comparison and the examples here don't surprise me. I agree that the broach marks and pad condition should be the determining factors in some of these cases.

                    Comment

                    • Edward J.
                      Extremely Frequent Poster
                      • September 15, 2008
                      • 6941

                      #25
                      Re: Help with this engine pad authenticity

                      Mike, I totally agree with your last line, Who would have ever thought we would be using a magnifying glass and scrutinizing the engine pads on any car 50-60 years later.
                      New England chapter member, 63 Convert. 327/340- Chapter/Regional/national Top Flight, 72 coupe- chapter and regional Top Flight.

                      Comment

                      • Mark D.
                        Extremely Frequent Poster
                        • June 30, 1988
                        • 2151

                        #26
                        Re: Help with this engine pad authenticity

                        Originally posted by Edward Johnson (49497)
                        ...Who would have ever thought we would be using a magnifying glass and scrutinizing the engine pads on any car 50-60 years later.
                        Who would've ever thought many of these cars would be selling for hundreds of thousands of dollars?
                        Kramden

                        Comment

                        • Michael W.
                          Expired
                          • April 1, 1997
                          • 4290

                          #27
                          Re: Help with this engine pad authenticity

                          Originally posted by Edward McComas (9316)
                          What am I missing here. Were all of the VIN derivatives characters in a gang holder? If so, how do you get a "bounce" on only one character?
                          Splain it to me please.
                          See response #11 above. The tool lands obliquely on the pad and only the first and possibly the second characters make an impression.

                          Comment

                          • Kenneth B.
                            Extremely Frequent Poster
                            • August 31, 1984
                            • 2087

                            #28
                            Re: Help with this engine pad authenticity

                            Originally posted by Edward McComas (9316)
                            What am I missing here. Were all of the VIN derivatives characters in a gang holder? If so, how do you get a "bounce" on only one character?
                            Splain it to me please.
                            We have discussed this before. The light stamps parcel or whole are caused when the gang stamp was set on the pad & sometimes hit lightly with the hammer to get it flat against the pad Since cast iron is not malleable there is some bounce back so when it is hit for real it usually moves a bit. The faint letters / #'S are there before the second deep ones. I have stamped a lot of cast iron & it's not easy especially with stamps that are used & not sharp. I believe that the stamps were changed often & all this crap of a stamp not looking exactly like close other SN'S may mean nothing.
                            65 350 TI CONV 67 J56 435 CONV,67,390/AIR CONV,70 454/air CONV,
                            What A MAN WON'T SPEND TO GIVE HIS ASS A RIDE

                            Comment

                            • Gary J.
                              Very Frequent User
                              • April 3, 2008
                              • 153

                              #29
                              Re: Help with this engine pad authenticity

                              Thanks to all for your insight, I started this discussion for two reasons. First for a little more knowledge which I have obtained and I apologize for those who feel this is a repeat some of us are not as knowledgable and have not been in this hobby forever. Secondly cause I was really interested in buying the car, but it was pulled off eBay earlier so someone bought it before I was ready to pull the trigger.
                              I do appreciate the excellent education and pictures, and thanks for those already in the know for your patience.
                              Gary
                              New England Chapter NCRS

                              Comment

                              • Leif A.
                                Extremely Frequent Poster
                                • August 31, 1997
                                • 3627

                                #30
                                Re: Help with this engine pad authenticity

                                Originally posted by Gary Beaupre (28818)
                                Leif,

                                It's an odd use of the word "proud", that I've learned from my Orthopaedic colleagues when describing a total hip replacement position.

                                Gary
                                I know, Gary...just having a little fun
                                Leif
                                '67 Coupe L79, M21, C60, N14, N40, J50, A31, U69, A01, QB1
                                Top Flight 2017 Lone Star Regional

                                Comment

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