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Technical Sun Distributor Machine

Discussion in 'The Hokey Ass Message Board' started by 38 Hump, Feb 25, 2015.

  1. 38 Hump
    Joined: Mar 29, 2007
    Posts: 42

    38 Hump

    I've been having fun with my Sun MD-1 distributor machine working on points type distributors and would like to adapt the machine to work with HEI distributors. I have heard there is a way to make an adapter with parts and diagram. Would anyone happen to have this available? I know there is one commercially made but that it is rather expensive.
    Any help would be appreciated.
  2. 283john
    Joined: Nov 17, 2008
    Posts: 815


    Gmc bubba. Is the guy to ask.
  3. Craig Owens
    Joined: Jun 28, 2006
    Posts: 435

    Craig Owens

    The device you need is called a pulse amplifier. Sun made such a device so the then-new magnetic pickup distributors could be tested on their machines, and you can sometimes find them on e bay. They usually sell for around $200 or more, but Paramount Distributors in Byron, Michigan makes a copy which they sell for around $160. Not cheap, but it works. I first bought a home made pulse amplifier off e bay for around $70. It was actually a Bosch ignition module from a BMW, with instructions on how to hook it up. It worked, but not as well, and it was a cumbersome thing to hook up. Additionally, you have to use a 12 volt car battery to power it. The unit I bought from Paramount hooks up simply, the same as the original Sun unit, and it doesn't require a battery or outside power.
  4. dave lewis
    Joined: Dec 12, 2006
    Posts: 1,368

    dave lewis

    A GM 4 pin hei module does the same thing as the pulse amplifier..
    And need a 12 volt battery as well..
    I paid a guy for the "top secret" instructions on how to make my machine work on msd and other electronic distrubutors..
    I laughed out loud when I opened the big manilla envelope and there was a single sheet of hand written instructions and a crude drawing of the module & wiring diagram. .
    One paragraph of instructions.

    It does work !!

  5. Moriarity
    Joined: Apr 11, 2001
    Posts: 21,140

    Staff Member

    I have a spare pulse amplifier i would sell you if you are interested
  6. 38 Hump
    Joined: Mar 29, 2007
    Posts: 42

    38 Hump

    Thanks for the replies. Trying to get a hold of GMC Bubba... no luck yet.
  7. subford
    Joined: Sep 2, 2020
    Posts: 5


    Can you share the drawing he sent?
    Also the hand written instructions.
    or email it to me at:
  8. subford
    Joined: Sep 2, 2020
    Posts: 5


    My SDT SUN Distributor Tester works with the newer Ford Distributors without any pulse amp just the module for Distributor being tested.
    I Tested it with both the Duraspark 2 and the EEC-IV CCD Ignition systems.
    Here is how I wired it:

  9. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,031


    You can do so many things with points distributors and having one of those machines you can keep it in a perfect state of tune. I'm going to install a three way switch to both sets of points in my dual point and connect the common lead to the coil negative. This way I can change the timing slightly when I need to because of ping due to heat or bad gasoline. I only need one set of points since I use a CD box, I'm going to try the Vertex Z-6, its suppose to be made in America...

    This thread made me think of a local gearhead who had a Sun Distributor machine in his garage. He uses nothing but Mallory dual point distributors with no vacuum advance... He loves those distributors..
    Last edited: Sep 3, 2020
  10. subford
    Joined: Sep 2, 2020
    Posts: 5


    I should have added to the post above that it ran find when I put a Points Distributor in it also.
    I also used a 6 volt bench power supply/charger and not a battery in the above tests.
  11. lostone
    Joined: Oct 13, 2013
    Posts: 1,625

    from kansas

    I always ran mallory dual points in all my old pontiacs and loved them. still have one floating around somewhere.

    If I was doing a more resto looking style motor rebuild then I would use the original point distributor and gut it and add one of the mr. gasket dual point conversion plates to it.

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