1. Evan Dutch

    Evan Dutch Well-Known Member

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    Engine bay of my 1980 d100.
    I know, it’s not an abody but can someone tell me exactly what these are? Leanburn setup maybe?

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  2. gregpurcell

    gregpurcell Greg Purcell

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    The top pic is the voltage regulator. T THINK the bottom ones control the idle settings
     
  3. 540slant6

    540slant6 Mopar SB Ripper

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    Fire wall mounted is definitely the voltage regulator.
     
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    • Hellrats

      Hellrats Still wrenching after all these years FABO Gold Member

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      The voltage regulator is on the firewall. The two on the fender are emission timers, one was for the EGR and the other is timing delay.
       
      Last edited: Oct 7, 2018
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      • Evan Dutch

        Evan Dutch Well-Known Member

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        Thanks guys, it was a slant six truck. Just put a 318 in it the other day.
         
      • BillGrissom

        BillGrissom Well-Known Member

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        Hardly an expert, but I don't think "lean burn". I see a Mopar ECU for spark under the steering column. I think "lean burn" was essentially the same "Spark Computer Box" in my 1982 Dodge Aries. That was mounted on the inner fender, but a similar box w/ "Lean Burn" label was mounted on the air cleaner in small-block engines, at least from what I have seen in junkyards (usually bigger cars). This box had a vacuum sensor that looked like a vacuum advance pod on the side. The distributor had no weights or vacuum advance since those adjustments were done in the box via electronics. It had a 3-wire Hall-effect pickup w/ a metal shutter wheel. Replacement spark boxes were pricey. I bought one once, though the problem turned out to be the crappy Molex-type connector they used on the box. Thank god for the later Weatherpack and Metri-pak connectors.
         
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