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Thread: Oversized rocker shafts

  1. #1

    Default Oversized rocker shafts

    Does anyone know if anybody is making oversized rocker arm shafts for Shovelheads ( aprox .005 ) ? Thank you , Mike

  2. #2

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    Mike; I checked my sources and did not find o.s. shafts. Normally you replace and size new bushings in the rocker arms. The problem for a person doing their own work is the $ 172.75 dealer priced reamer.
    Craig

  3. #3

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    Lots of Industrial Tool Suppliers with reamers and priced so a hobby shop can afford one, 25-35 dollar range but you may need a Bridgeport or Lathe to properly complete re bushing to size.

  4. #4
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
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    3,988

    Default

    Quote Originally Posted by TomL View Post
    Lots of Industrial Tool Suppliers with reamers and priced so a hobby shop can afford one, 25-35 dollar range but you may need a Bridgeport or Lathe to properly complete re bushing to size.
    Sorry to get out of my Zodiac, TomL!

    But reamers don't usually need a machine, if their cutting edge is over-length enough to pilot from both bearing surfaces.

    My hopes are somebody can link us to a source of such, even if semi-affordable, because I need just shy of a quarter-incher of four-inches or more,..
    seriously.

    Thanks for the hope!

    ....Cotten
    PS: There used to be a machine shop in the next town downroad (not even the "highway") that did such things for me perfectly. (*sigh*)
    Last edited by T. Cotten; 06-15-2019 at 04:23 PM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  5. #5

  6. #6

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    This style needs to be "chucked" in a machine and is what I was referring to in sizing rocker arm bushings that have been replaced.

  7. #7
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
    Posts
    3,988

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    Of course, TomL!

    I am suggesting that a reamer with a flute length longer than the rocker arm would make it much simpler.

    Then you wouldn't need to figure out how to fixture the arm;
    Just hold the reamer in a vise, and twist the arm on by hand.

    I always Sunnen-honed shovel bushings anyway, but they don't make a 1/4" mandrel long enough for carbs.

    So I must commission a long reamer that will align skewed bushing bores before I hone-finish.

    ....Cotten
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  8. #8

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    I see what are driving at, "simple" anyone can, who grasps basic machining, can make it happen. Ah the perfect world. I sure wished I hadda moved there when I was younger! :-)

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