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Thread: Neck bearing races

  1. #1
    Join Date
    Feb 2012
    Posts
    15

    Default Neck bearing races

    I installed a set of after-market bearings and races on a '56 Pan that i'm building, the bolt hole distance between the upper and lower trees for the upper tins are about 3/16" too wide, could anyone tell me the length between the top and bottom bearing when installed, any help would be greatly appreciated, Thanks Whitey

  2. #2

    Default

    Whitey, Did you replace the neck cups with after-market cups or did you install new bearing races in your original neck cups. If you replaced the neck cups with after-market ones measure old ones and new ones and compare. Perhaps the new after-market ones were machined to sit slightly taller out of the neck. If each after-market one is 3/32" taller you would gain 3/16" between bolt holes.

  3. #3
    Join Date
    Jul 2002
    Location
    North Hills, CA and Pine Grove, CA
    Posts
    4,254

    Default

    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/

  4. #4
    Join Date
    Feb 2012
    Posts
    15

    Default

    Thanks for the info. I installed new timken bearings and cups, apparently according to Chris's pics., I have later model cups, I didn't have the old cups, the frame was pretty hacked up, the original neck was cut and had about 5 lbs. plate welded on and stretched out over 20 degrees, I guess now the only option I have is to knock out and replace the cups unless someone might have a quicker fix. Thanks Whitey

  5. #5
    Join Date
    Mar 2009
    Posts
    457

    Default

    Sorry, there's no 'quick fix' other than to replace your bearing cups with the early cups.
    And if you have them, it's actually a pretty quick fix...

  6. #6

    Default

    if you can't find any 49-59 cups, call mark Blankenship(304) 697-1445 after 3pm eastern time. He is re-producing them...

  7. #7
    Join Date
    Feb 2012
    Posts
    15

    Default

    001.jpgThanks for the help, I probably will have to make the call,it seems that no one repops the early cups, but I have a question on the length of the neck, does anyone know the exsact length, I'm posting a pic. so you can see where I'm coming from Thanks Whitey

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