noise supressor joby due

Interior and Electrical

  1. ZieglerSpeed

    ZieglerSpeed Well-Known Member

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    ...eyelet is attached to coil primary terminal and wire is from cylinder condensor deal with crows foot that goes unnder coil bracket bolt. Static supressor, do I need it? Does it do anything? Thanks
     
  2. Aspen500

    Aspen500 Well-Known Member

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    You don't NEED that capacitor. It's mainly for radio noise suppression, especially on the AM band. Has nothing to do with the ignition function.
     
  3. ZieglerSpeed

    ZieglerSpeed Well-Known Member

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    Does it prevent static on AM- FM? I might need to listen to a football game some day
     
  4. Aspen500

    Aspen500 Well-Known Member

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    It won't PREVENT static on AM but it does reduce the RFI static caused by the ignition system that rises and falls with engine rpm.
     
  5. ZieglerSpeed

    ZieglerSpeed Well-Known Member

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    I wondered if there was a deal to try to cut down potential interference with emergency audio
     
  6. ZieglerSpeed

    ZieglerSpeed Well-Known Member

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    Did all automakers go to a capacitor on the coil 1 day? IDK
     
  7. Mikes5thAve

    Mikes5thAve Well-Known Member

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    It was only to filter out annoying noises, nothing to do with emergency broadcasts.
     
  8. Aspen500

    Aspen500 Well-Known Member

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    The condensor serves the same purpose as resistor spark plugs and carbon core plug wires, to reduce or eliminate radio frequency interference which will cause static, buzzing, humming, and all sorts of annoying noises from the radio. I've even ran into alternators that made a whining type sound over the speakers even with the radio turned off. That RFI can mess with electronics too but that's not much of an issue with 40 year old cars.
     
    toolmanmike likes this.
  9. ZieglerSpeed

    ZieglerSpeed Well-Known Member

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    Solid copper plug wires are frowned on for street use as they will interfere with TV also
     
  10. BudW

    BudW Moderator Staff Member

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    Radio suppresor.jpg
    That little condenser does wonders for radio reception and unwanted noise in your radio. They also put one one on the alternator (or voltage regulator). They also need to put one on wipers – but I've yet to see one there (yet).

    High end cars (of our era) also have mini transformers just before power wire(s) go into the radio, to also help combat electrical noise.

    Are the condensers needed? That depends if you prefer to hear the engine or to hear the radio. I prefer the later.
    BudW
     
  11. ZieglerSpeed

    ZieglerSpeed Well-Known Member

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    Thanks Bud. Who has them?
     
  12. Mikes5thAve

    Mikes5thAve Well-Known Member

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    Any place that sells parts. Usually called something like radio capacitor, ignition radio capacitor, radio noise suppressor.
     
  13. ZieglerSpeed

    ZieglerSpeed Well-Known Member

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    I cannot find a noise capacitor like that pic, anywhere. My capacitor that I wrecked has an 8 inch lead wire. Napa is trying to sell me a points condensor, or a capacitor I have to change the male bullit terminal, or I have to lengthen the lead wire