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Thread: knucklehead kicker cover numbers

  1. #11
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    That H would have been stamped in just after cylinder / piston assembly I guess?
    Both bottom ends were the same so only the pistons were different.
    Maybe the H was stamped in before head assembly ?

    Rein

  2. #12
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    Jul 2002
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    North Hills, CA and Pine Grove, CA
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    Quote Originally Posted by nukkel View Post
    That H would have been stamped in just after cylinder / piston assembly I guess?
    Both bottom ends were the same so only the pistons were different.
    Maybe the H was stamped in before head assembly ?

    Rein
    The cam was also different.
    Be sure to visit;
    http://www.vintageamericanmotorcycles.com/main.php
    Be sure to register at the site so you can see large images.
    Also be sure to visit http://www.caimag.com/forum/

  3. #13
    Join Date
    Mar 2010
    Location
    Western Australia
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    Quote Originally Posted by nukkel View Post
    That H would have been stamped in just after cylinder / piston assembly I guess?
    Both bottom ends were the same so only the pistons were different.
    Maybe the H was stamped in before head assembly ?

    Rein

    I donít know at what stage the Hs were stamped on top of the rear mounts and Iím yet to see them on 55 model cases.

    FLH has different valve springs to FL.
    FLH heads received some internal polishing.
    Eric

  4. #14
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    Nov 2010
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    Here is a 1950 EL, 5 number VIN, with no numbers behind the cylinders.1950 Pan (6).jpg1950 Pan (7).jpgCraig

  5. #15
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    Mar 2010
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    Western Australia
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    Thanks for posting but Iím not surprised there are no numbers on top of the rear mount of an EL. Some say the number 6 was used there to indicate E/EL but I found no evidence to support that story. AFAIK the factory didnít stamp anything on top of the rear mount to indicate E/EL.

    Just out of curiosity, has your R-H case got anything stamped on the side of the relay bracket boss? Perhaps T or C?
    Eric



  6. #16
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    Nov 2010
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    Quote Originally Posted by Speeding Big Twin View Post
    Thanks for posting but Iím not surprised there are no numbers on top of the rear mount of an EL. Some say the number 6 was used there to indicate E/EL but I found no evidence to support that story. AFAIK the factory didnít stamp anything on top of the rear mount to indicate E/EL.

    Just out of curiosity, has your R-H case got anything stamped on the side of the relay bracket boss? Perhaps T or C?
    Eric


    Eric; There is nothing stamped on the relay boss. Maybe it is that my motor is a late 1950 production ?CIMG1374.JPG
    Craig

  7. #17
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    Thanks Craig. I have nine examples of T in that position. One is on a case with a high 1949 BN and the other eight are on 1950 models. The T above is on a case with BN 350-1+++ and another also has 350-1+++. Two have 150-5+++ while another has 150-7+++. I donít know the BNs for the remaining 1950 models.

    The C above is on a 52 model and Iíve also seen it on another 52 and a 51.
    Eric

  8. #18
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    Jul 2017
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    Netherlands
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    Was looking for a 1941 cover and found this one:

    C6E48EB7-1BC0-4B9A-9AE3-B97B12A14189.jpg

    Some work to be done on the fill plug threads and the usual cracks around the starter crank ..

    72990FF0-4A5E-47B8-BEEF-0E752E4F4E14.jpg

    I think those grinding marks on the outside near the data tag are typical as they can be found on others as well..

    BFA7B353-6363-4208-A9EE-8C5219524CC5.jpg

    Rein

  9. #19
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    Nov 2010
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    Rein; That is a good cover and the repairs are easy for a competent welder and machinist. And it will be good for another 70 + years.
    Craig

  10. #20
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    Jul 2017
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    Netherlands
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    Thanks Craig,
    Happy with it, unpolished and overseable repairs!

    Ordered an affordable tap to do the threads:
    https://www.ebay.com/itm/7-8-High-Sp...72.m2749.l2649

    Rein

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