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Thread: Questions about casting numbers on cylinders.

  1. #1
    Rally Rat
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    Dec 2008
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    Questions about casting numbers on cylinders.

    I scored a pile of airhead jugs, but I'm not sure what goes to what. Is there a resource out there for determining what the casting numbers on the top end of the jugs mean?

    stuff like.

    SK(superimposed on each other) 0903-1.1182
    SK 0918/1 1182
    SK 0903-2-1182
    SK 731-2-1182
    Google has been markedly useless in this endeavor.

    Thanks in advance.

  2. #2
    Administrator 20774's Avatar
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    The SK stands for Koblenschmidt. My OEM 1000cc jugs have the SK symbol with a 10 stamped next to it for 1000cc. There's also a B for B-size. I see a "1" but not sure that's of any use. On the opposite side of the base flange, I see "A2 S" on one and "B2 S" on the other. No clue there.

    Not sure what your other numbers are other than something associated with mold numbers. The "1182" is repeated...1/18/1982...1/18/1992????
    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
    Rally Rat
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    I don't know either, -all- the jugs I've measured/inspected have the 1182 cast into them, much to my confusion.

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