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Hot Rods Dual coils!????????

Discussion in 'The Hokey Ass Message Board' started by 6sally6, Sep 21, 2019.

  1. 6sally6
    Joined: Feb 16, 2014
    Posts: 2,467

    6sally6
    Member

    Is it possible(better yet have any of you fellas done this!) Use TWO coils on a V-8 engine? I think it might look pretty cool but not sure about any performance increase. Could it be wired in series and have one coil serve one side of the engine and the other coil....the other!
    The triple master cylinders look pretty slick on the fire wall sooo dual coils should be eye candy too!
    6sally6
     
  2. 270dodge
    Joined: Feb 11, 2012
    Posts: 742

    270dodge
    Member
    from Ohio

    Search for W H Ducoil distributer
     
  3. Also the Spalding / Grant Flamethrower.... mmmmm :cool: flame.jpg
     
    Dean Lowe, Truck64 and dana barlow like this.
  4. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,317

    gimpyshotrods
    ALLIANCE MEMBER

    Get a second plug in the cylinder, too!
    [​IMG]
     
    harpo1313 and VANDENPLAS like this.

  5. larry k
    Joined: Feb 23, 2009
    Posts: 548

    larry k
    Member

    Had a dual point , dual coil distributor , in a 239 cube flathead once . It ran well as I remember !
     
  6. Truck64
    Joined: Oct 18, 2015
    Posts: 5,325

    Truck64
    Member
    from Ioway

    "See Reverse Side For Details" hint hint
     
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 56,043

    squirrel
    Member

    A local car...built in Minnesota well over 50 years ago

    jim 348.jpg
     
  8. RichFox
    Joined: Dec 3, 2006
    Posts: 10,020

    RichFox
    Member Emeritus

    This will work and you can do it with VW or Pinto parts. I did, No you can't run one coil into the other. You need two distributors. Built into one housing. (Old and expensive) Or two newer four cylinder distributors. Or for what you want, Just put another coil on the firewall with wires going nowhere. TB Ford.JPG
     
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  9. tubman
    Joined: May 16, 2007
    Posts: 6,953

    tubman
    ALLIANCE MEMBER

    "RichFox" made the proper point - You cannot do it with a regular distributor unless it is a dummy just for looks. You need two sets of points, each set to alternately energize the respective coils. Then you need a special distributor cap that has two towers to connect the secondary leads from the coils, and a special rotor that will work with that cap. Mallory made a a version of their "Flashfire" coil that had two secondary windings and one primary winding which exited from the coil from just one secondary terminal, but they are no longer in production and are almost impossible to find. I have often wondered if you could get by with two coils driven by a dual point distributor (with the two sets of points disconnected from each other) that had their secondary leads spliced together and feeding a regular distributor cap and rotor. I suspect there may be some electronic feedback between the coils that would be a problem, that could probably be solved by adding a diode, but I will leave that up to the electronic geniuses.

    By the way "RichFox", I will take this opportunity to tell you I am impressed with the dual distributor setup every time I see it. It shows some original thinking and it has an added mechanical factor (gears, etc.) that I have always liked.
     
    Last edited: Sep 23, 2019
    55willys likes this.
  10. RichFox
    Joined: Dec 3, 2006
    Posts: 10,020

    RichFox
    Member Emeritus

    Same idea as the Spalding Flame thrower/Roto Phase dual coil. Just cheaper easier gears, I did do one for a Chevy V6 engine. Used three cylinder outboard motor distributors. Each fired one bank, On the Plymouth four I was interested in what difference twin plugs would make. But I liked the bling too.
     
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  11. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 6,254

    Ebbsspeed
    ALLIANCE MEMBER

    I modified a Grant Spalding to work on a Cadillac Flathead.
    Samsung 9-10-14 007.jpg Samsung 9-10-14 008.jpg Samsung 9-10-14 012.jpg Samsung 9-10-14 019.jpg

    One of the two "distributor caps" had a crack through the center of it so.........

    Samsung 9-10-14 026.jpg


    ...... I made a reservoir with masking tape and stuck a couple of fiberglass rods (sections of fishing pole) into the reservoir for strength..... Samsung 9-10-14 028.jpg


    ....then flooded the reservoir with epoxy. I haven't installed it on the motor yet, but should have it up and running later this fall. Samsung 9-10-14 031.jpg
     
  12. And of course there is always the Harmon Collins dual point/dual coil for the flathead V8. It basically turn the engine into 2 - 4 cylinders.
     
  13. RICK R 44
    Joined: Dec 13, 2009
    Posts: 474

    RICK R 44
    Member

    Saw a home built dual coil set up on an 8BA flatty at the Jelopy Jam Up a few years ago. I believe the car was from Ohio.
     
  14. 37_Ford
    Joined: Mar 9, 2011
    Posts: 45

    37_Ford
    Member
    from Illinois

    Running a Harmon Collins with .36 mfd magneto condensers on a supercharged 59ab flathead. Benefits include increased dwell time and no point bounce. Delivers strong spark at 7,000rpm on my Sun Distributor machine. Using two Bluestreak ACC 560-12 Super Coils.

    Just completed the Midwest Roadster Run yesterday, 300 miles, in the rain, with no issues.

    FBD93EFC-535C-4A0A-9AEE-9410B02BD427.jpeg ABA4D1F0-2BBB-4B52-9CEC-EB95EF1D9AD3.jpeg DBB009BE-13C0-4506-94D5-D98ACF740C7C.jpeg D8403CB8-FBB2-4211-A524-7B3FBF0A3AD5.jpeg
     
  15. I put an H-C distributor on my high school flathead back in 1959.....used two '48 Ford coils.......used it for 3-1/2 years without any problems......

    1940 coupe engine - 1961.jpg
     
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  16. G-son
    Joined: Dec 19, 2012
    Posts: 1,291

    G-son
    Member
    from Sweden

    You can use 8 ignition coils, one straight to each plug. You just need a way to trigger each one of them, which could be solved in a number of different ways.
     
  17. patsurf
    Joined: Jan 18, 2018
    Posts: 1,034

    patsurf

    showoff!!
     
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  18. Truck64
    Joined: Oct 18, 2015
    Posts: 5,325

    Truck64
    Member
    from Ioway

    It ain't braggin' if ya can do it!
     
  19. Kid has one of those old time modified Lincoln dual coil distributors on his '36.
    IMG_2748 (Medium).jpg
     
    UNSHINED 2 likes this.
  20. :D
    flame2.jpg
     
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  21. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,317

    gimpyshotrods
    ALLIANCE MEMBER

    I have vague memories of a picture from the 1980's, of a distributor body, with eight sets of points on it, triggering eight coils.

    Ring a bell for anyone?
     
  22. RichFox
    Joined: Dec 3, 2006
    Posts: 10,020

    RichFox
    Member Emeritus

    On the road to El Mirage in an alfalfa field is Roline 805 cid V8 irrigation motor and pump. It has 8 conventional coils of the 50s style and 8 sets of points staked up in front of the crank snout. Lost spark every other revolution. Ran on natural gas from a pipe in the ground Had a cast iron pan with a float in ti connected to an oil drum. Oil gets low, opens up and adds oil on the run. Muffler about the size of a water heater. Pretty cool I thought, Sitting next to it an electric motor driving the pump. Ypu could probably get the Roline for the asking.
     
    gimpyshotrods and G-son like this.

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