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Tech fitting a SBC distributer in a Hemi

Discussion in 'The Hokey Ass Message Board' started by Taildraggin, May 7, 2013.

  1. This is how i modified and fitted an old mallory duel point distributer into a Desoto Hemi.
    I was lucky enough to borrow a Hemi distributer of a friend of mine to get the correct dimensions.
    I first stripped down the old mallory unit and roughly cut it to length.


    [​IMG]


    i then put it up in the lathe and faced it off to length and turned the diameter down to 25mm (1").


    [​IMG]


    Next job was to make up the ally adapter, this was turned up in the lathe.
    i have done a drawing if anyone else needs to get the sizes.


    [​IMG]


    [​IMG]


    the next job was to press the adapter onto the modified distributer body, I also used some bearing fit so it wont move once pressed on.


    [​IMG]


    I also pressed out the old brass bush from the cut off piece of the old distributer and pressed it back into the shortened body.
    here are the two side by side.


    [​IMG]


    thats the body sorted and finished, next job is to modify the drive shaft.
    First cut to length.


    [​IMG]


    you will then need to machine the flats on the end of the drive shaft.
    its important that this is not off center. I do not have a mill to do this job, so I clamped the drive shaft into the tool post of the lathe and milled the flats.


    [​IMG]


    now fit the shaft back into the body fit and pin a collor to stop it comming out.
    here it is fitted in the block.


    [​IMG]


    my next plan is to fit a petronix unit into the distributer.






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  2. Artiki
    Joined: Feb 17, 2004
    Posts: 1,998

    Artiki
    Member
    from Brum...

    Very neat machine work, Kelvin. Using The lathe as a mill is genius...
     
  3. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,951

    rottenleonard
    Member

    Thats pretty cool!
     
  4. where did you get the manafold top? Hot Heads?
     
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  5. GMC BUBBA
    Joined: Jun 15, 2006
    Posts: 3,350

    GMC BUBBA
    Member

    Looks good !!! Nice conversion......We call these "butt changes".
     
  6. TR Waters
    Joined: Nov 18, 2006
    Posts: 1,439

    TR Waters
    Member
    from Vermont
    1. Early Hemi Tech

    He is using a Williamson Desoto intake.
     

  7. Thats the one
     
  8. v8paul
    Joined: Dec 17, 2008
    Posts: 179

    v8paul
    Member
    from england

    That's amazing, so neat and simple !
    I'd never of thought to use my lathe as a mill. I can see me having a go at this, thanks for posting !
     
  9. pitman
    Joined: May 14, 2006
    Posts: 4,746

    pitman
    Member
    from Hampsha

    Nice job Mr. K. the adapter does help by spec-ing it out.
     
    Last edited: May 9, 2013
  10. 51 Hemi J
    Joined: Sep 27, 2006
    Posts: 391

    51 Hemi J
    Member

    You get my Vote! You want to do another one? I have a 291 Desoto Id like to have one made for!
     
  11. Atwater Mike
    Joined: May 31, 2002
    Posts: 9,852

    Atwater Mike
    ALLIANCE MEMBER

    Good thinking on that lathe-milling op! I made an Olds HEI into a front-mounted '48 flathead distributor...(used a VW single-pinned offset drive: fit flathead cam poifect!)
     
  12. Mnhotrodbuilder
    Joined: Jul 12, 2010
    Posts: 1,142

    Mnhotrodbuilder
    Member
    from Afton, MN

    Nice tech thank you for the drawing it will come in handy.


    Posted from the TJJ App for iPhone & iPad
     
  13. Nicely done - one suggestion - put the groove in it for an O-ring like later Mopar distributors - less likely to leak and you don't have to worry about the gasket.
     
  14. great work and nice that you will share the info!
     

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