Carbon tracking through rotor. More HEI woes.

Electrical and Ignition

  1. iScamp

    iScamp Well-Known Member

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    If it were up to me, I'd go with a dual points distributor. But, bro owns the car and says HEI stays. Now that I think about it, I might keep a points distributor in the trunk. Vacuum sealed package and a distributor wrench.
     
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    • Dana67Dart

      Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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      Really thinking outside the box here.

      Make a dist shaft out of a non electrically conductive material.
       
    • iScamp

      iScamp Well-Known Member

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      I was thinking of making a ceramic distributor rotor. That's MY idea and I'm gonna patent it. :lol:
       
    • Dana67Dart

      Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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      I think David Lee Roth said it best...

      "We're running a little bit hot tonight" tone down the output voltage
       
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      • jbc426

        jbc426 Well-Known Member

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        Smart move. It's good to have options out on the road. Make sure you add a ballast resistor and a coil to the bag.
         
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        • iScamp

          iScamp Well-Known Member

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          Testing on the 340 was delayed by a bunch of other projects.
          Here is what we found this past weekend:
          Average gap between rotor tip and button in the cap was .120". We extended the brass rotor tab and now have an average gap of .030".

          Drilled a hole in another cap and checked rotor phasing with a timing light. Basically, the phasing is way off. The rotor is pointing at plastic, not the cap button. We are looking for a reluctor that has the proper phasing. Ehrenberg sells them on Ebay sometimes. Or I may have this one machined with a new keyway.

          Got to get back to the other projects, so another progress report will be a few weeks away. Thanks, again FABO members.
           
        • Dana67Dart

          Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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          Screenshot_20200602-221046.png The reluctor I have has two keyways one for big bock And one for small block, any chance you have it installed on the BB keyway?

          Note the arrows for rotation direction
           
        • 67Dart273

          67Dart273 FABO Gold Member FABO Gold Member

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          ^^I nearly mentioned this.........."rotor phasing"
           
        • 67Dart273

          67Dart273 FABO Gold Member FABO Gold Member

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        • iScamp

          iScamp Well-Known Member

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          Mine has the two keyways. It's installed correctly. We tried to install it in the big block location but, that made the phasing even worse.
           
        • Demonracer

          Demonracer 71 Demon 00 Ram 16 Chrysler 300S 05 Caravan FABO Gold Member

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          If your brother insists the GM HEI stays, tell him next time it gives him problems to; A. Call AAA, B. Fix it himself, C. Change the hybrid stuff back to Mopar.
           
        • 67Dart273

          67Dart273 FABO Gold Member FABO Gold Member

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          Have you tried switching pickup wires?
           
        • iScamp

          iScamp Well-Known Member

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          A. Already had to do that when I was driving it.
          B. I can't let it whoop me.
          C. He's heard so much good about HEI, that he won't give it up.
           
        • iScamp

          iScamp Well-Known Member

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          Somewhere I found information about polarity of the pickup wires. They are wired correctly. I don't want to swap them 'just to see' because I think it will damage the module or cause a weak spark. I think we are on the right track with rotor phasing and rotor gap. There are some guys here on FABO that rave about HEI. I think it was Trailbeast that sold HEI kits for Mopars. So, we're not giving up.
          But, any long trips with that car and there's gonna be a points distributor boxed up in the trunk.
           
        • 67Dart273

          67Dart273 FABO Gold Member FABO Gold Member

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          No, you are thinking wrong. All it does is change the spark position. It's an AC signal. Wired one way, the first pulse is positive, the second negative. You swap them, they are reversed, and displaced in time. Swapping them IS THE WAY to find out if that is the cause of rotor phase problems.

          Wire color is sometimes wrong. Swap them and see, and make darn sure the reluctor is correct
           
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          • Krooser

            Krooser Reform School Graduate

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            Ditch the Blaster Two coil....
             
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            • iScamp

              iScamp Well-Known Member

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              Interesting. Yeh, what I read was a certain wire color should go to the small connector on the module. Worth a try, with the swap.
              Reluctor is installed correctly.
               
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