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3 bolt to 2 bolt dizzy adapter for flathead

Discussion in 'The Hokey Ass Message Board' started by BobbyD, Oct 2, 2005.

  1. BobbyD
    Joined: Jun 6, 2005
    Posts: 581

    BobbyD
    Member
    from Belmont NC

    I read in one of the post that you can adapt a crab style dizzy to a 3 bolt cover. I've got a nice crab unit and I want to replace the divers helmet. Anyone know who makes this little jewel? If this is not available, what are my options?
     
  2. Sweats
    Joined: Oct 15, 2004
    Posts: 599

    Sweats
    Member

    Harmon and Collins made the orig. adaptor with the cam button. Dont know if anybody is re-popin them but they do turn up at the swaps now and again. It is not a hard piece to make maybe someone has one to borrow and copy? Good Luck!
     
  3. Droptank
    Joined: Jan 15, 2004
    Posts: 122

    Droptank
    Member

  4. BobbyD
    Joined: Jun 6, 2005
    Posts: 581

    BobbyD
    Member
    from Belmont NC

    Thanks droptank, I when to that link, but with most angelfire deals, its screwy as hell. No contact info that I could find. The swapmeet link is for meets in 1999! Says go to www.flatheadsforever.net, but that takes you to yet another bullshit site. Help me contact this cat, I want to use this dizzy.
     
  5. BJR
    Joined: Mar 11, 2005
    Posts: 10,997

    BJR
    Member

    Don't the covers interchange between 2 and 3 bolt? If so get the other cover.
     
  6. AV8-Rider
    Joined: Jan 31, 2002
    Posts: 910

    AV8-Rider
    Member

    If you have a pre 46 engine with a 3-bolt cover you can't just change it to a 2 bolt.

    Your cam is longer in front than the 46-48 unit.
    If you put the 2 bolt cover and crab dizzy on your motor you will see that there is a problem. THE CAM. Cover fits just fine, but there is a gap between the cover and dizzy when you try to bolt it on. The cam has a "nose" poking into the cover.
    I suppose you can make an adapterflange between the cover and Dizzy. Otherwise you have to change your cam to a "59AB" style.

    Good luck
     
  7. BobbyD
    Joined: Jun 6, 2005
    Posts: 581

    BobbyD
    Member
    from Belmont NC

    I thought the 2 bolt covers started in 42? Right or wrong. I f a 2 bolt 42-46 cover will work to install this dizzy, then I'm in the market for one.
     
  8. alchemy
    Joined: Sep 27, 2002
    Posts: 22,265

    alchemy
    Member

    The answer to this problem is just make a spacer. I have one somewhere in my stash (no, I need to keep it for "someday"). It's just a 1/4" or so (measure your gap for proper dimensions) aluminum spacer made to the same shape as the back of the distributor. Probably take all of a half hour with a jigsaw and a drill press. Just make sure your bolt holes are accurate to align the distributor correctly.
     
  9. Flat Ernie
    Joined: Jun 5, 2002
    Posts: 8,406

    Flat Ernie
    Tech Editor

    The spacers are easier to find than the 3-2-bolt adapters....
     
  10. AV8-Rider
    Joined: Jan 31, 2002
    Posts: 910

    AV8-Rider
    Member

    You may very well be right about this. I don't know for sure. Someone on here knows for sure.
    Bruce for instance. Think he is away for Hersey these days.

    Anyone else?


    Paul
     
  11. BobbyD
    Joined: Jun 6, 2005
    Posts: 581

    BobbyD
    Member
    from Belmont NC

    Just to bring this up to date, Dennis Carpenter has the spacer needed to make this work for 20 bucks. You will need the 2 bolt cover, which he also has NOS in cosmoline no less for $25. 45 bucks later my problems were solved. Also he has the adapter to go the other way for 15 bucks.
     
  12. DICK SPADARO
    Joined: Jun 6, 2005
    Posts: 1,887

    DICK SPADARO
    Member Emeritus

    Have 2 bolt spacers in stock, if interested call 518-861-5367 m-f 9-5 Dick
     
  13. Flathead Youngin'
    Joined: Jan 10, 2005
    Posts: 3,662

    Flathead Youngin'
    Member

  14. maud
    Joined: Oct 4, 2003
    Posts: 121

    maud
    Member
    from Maud,Tx

    I bought a 3 bolt to 2 bolt adapter from a nice old guy in Gary Tx. The crab dizzy supplies a hotter spark because you can use a modern coil. go to www.thepitstopgary.com he also is supposed to have a Pertronix conversion for the crab dizzy.
     

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