Results 1 to 8 of 8

Thread: Identification by the numbers

  1. #1
    Registered User
    Join Date
    Jan 2013
    Posts
    17

    Identification by the numbers

    I have a 1984 R100 something. I have looked at engine numbers on line until I am cross eyed. On the left side of the engine are there are two numbers. 83346285 and below that DBMS 098042A3
    The Calif. title lists the first number as the engine number. I cannot find any such number the Phil Hawkley's BMW page or anywhere else. It seems all the R100 model start with a 6. Has anyone run into this before? Does anyone know where to find these identification numbers?

  2. #2
    Administrator 20774's Avatar
    Join Date
    Sep 2005
    Location
    San Antonio, TX
    Posts
    13,363
    Read the top part of Snowbum's page:

    http://bmwmotorcycletech.info/IDnumbrs.htm

    If you feel up to it, read some more of the page. It seems that in 1984 or so, things became a little squirrely with engine numbering. If you can find the 17-digit number, the critical part is the last 7 digits, starting with "6". Before the early 1980s, all we had was the 7-digit number. Then they changed and came out with a "true" VIN with 17digits.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Registered User m_stock10506's Avatar
    Join Date
    Feb 2005
    Location
    Trinity, NC
    Posts
    324
    Your '84 R100 should have a 17 digit VIN. If nothing has been replaced, the VIN should be stamped into the frame down low near the oil pan and the same VIN should also be stamped into the label on the drive shaft. Probably starts with WB104..... but the last 7 digits are the numbers you plug into the parts fiche or VIN decoder web sites.
    Michael Stock, Trinity, NC
    R1100RT, R100, R60/6

  4. #4
    Registered User
    Join Date
    Jan 2013
    Posts
    17

    Thank you both

    After finding the vin I find out I have purchased a 1984 R100T not the S that had been represented. Stupid novice mistake. Oh well, now I have another R100T only now with an S fairing

  5. #5
    Registered User lmo1131's Avatar
    Join Date
    Jan 2010
    Location
    Pismo Beach, CA
    Posts
    3,072
    I won't tell....
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  6. #6
    Registered User lkchris's Avatar
    Join Date
    Mar 2003
    Location
    Albuquerque, NM
    Posts
    4,856
    Quote Originally Posted by lmc3881 View Post
    After finding the vin I find out I have purchased a 1984 R100T not the S that had been represented. Stupid novice mistake. Oh well, now I have another R100T only now with an S fairing
    Rest easy, as BMW didn't make an "S" in 1984. The bikes with that fairing were called R100CS in 1984. The last time BMW made an R100S was probably 1980.

    There's no engine or transmission or rear drive difference between an '84 T, CS, RS, or RT. The only mechanical difference was the handlebars and perhaps the switch wiring lengths. Not sure, but if you have a rear drum brake you're better off anyway. BTW, the bike didn't originally come with R100T sidecover decals. Just R100.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  7. #7
    Registered User
    Join Date
    Jan 2013
    Posts
    17

    thanks Chris

    Interesting info Chris. I also have a third bike, a 78 (built in late 77) that is an R100S but the small fairing was replaced with an after market (may be a vetter). Maybe I'll take the S fairing off the 84 and put it on the 78. The 78 is still in friends garage. A two owner California bike that I got for $600. Couldn't pass it up

  8. #8
    Registered User lkchris's Avatar
    Join Date
    Mar 2003
    Location
    Albuquerque, NM
    Posts
    4,856
    In 1978 BMW sold some "special" R100S bikes with no fairings at all, as the "Vetter" craze was well established.

    I bought one in 553 dark red metallic (smoke). It had USA bars and pods for the extra instruments, i.e. voltmeter and clock.

    The dealer filled out the owners manual calling it an R100ST.

    Before I traded it in I'd put an S and then an RS fairing on it.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •