1979 vin to engine number confusion

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  • sauerdeauxtieroh
    Junior Member
    • Jan 2018
    • 1

    #16
    I just acquired a rolling basket this last summer and it falls within the month of non-matching VIN/EIN. Based on what I've read, my numbers have raised a few questions. VIN 7G488**H9 should be past the range of the non-matching bikes but my engine makes it a bit confusing. EIN 1479023*** is an 80 inch; 1979; built on 23rd day (1/23/79). That is from the date range that should be non-matching but the VIN production number is supposedly after the the non-matching bikes were done. The stamping seems to be factory as well.


    "From 1970 to 1980 the VIN number could be found on both the frame and the engine and would match exactly with the exception of a few months in 1979 which was due to an idea by the factory to make them different. The idea was quickly killed after law enforcement notified Harley-Davidson that it made the bikes look stolen. The production date range was from 1/9/1979 to 2/7/1979. The VIN numbers affected are 43000H9 through 48199H9. The engine numbers where 10 digit numerical IDs."

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    On top of that, I ended up with a cowpie tx that supposedly came out late '79 on a January production bike.

    Considering the bike was produced 40 years ago, there could be all sorts of mixing of parts. The tx definitely could fall under that category. The engine though came from that one month the numbers weren't matching. To think that it was mated to a later chassis seems unlikely. I've not found much ambiguity regarding the affected production dates/numbers so I don't assume there was an error in the production number range but that could explain it.

    All that is to say, I have no paperwork and am trying to determine if I have an original engine/tx knowing it could never be "numbers matching"?

    Comment

    • Tattooo
      Senior Member
      • Sep 2012
      • 12407

      #17
      Originally posted by sauerdeauxtieroh
      All that is to say, I have no paperwork and am trying to determine if I have an original engine/tx knowing it could never be "numbers matching"?

      It looks like an original Harley motor to me.....

      Comment

      • BurnoutNova
        Senior Member
        • Oct 2013
        • 204

        #18
        I have 2 1979 bikes (an fxs and flh) and nether of them have these weird number variances. The motors match the necks. On the fxs there is also a sticker on the frame with the vin on it.

        Comment

        • JBinNC
          Senior Member
          • Dec 2018
          • 2717

          #19
          Come on guys, this one ain't even a little bit mysterious.
          In 1981, HD adopted the 17 (I think ) digit federal gov't mandated vehicle serial number system. That number appears stamped on the headstock of the frame, and on a stamped or printed tag affixed to the downleg of the frame.
          An abbreviated version of that number appears on the motor case. From '81 up, all HD vehicles are numbered this way.

          So, this number on this motor case is easy. The motor, or at least the cases, came originally on an '82 FXB. It is or was an 80cu.in. motor.

          Jim

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