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No More Bad Condensors

Discussion in 'Early CJ5 and CJ6 Tech' started by 1967 CJ5A, Oct 18, 2019.

  1. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    They have a voltage rating which must not be exceeded. As the voltage rating goes up, size and cost do too. You can use a 1000V part for a 100V application, but not vice-versa.

    Overlooked the answer above - sorry.
     
    dozerjim and Glenn like this.
  2. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Stock capacitors are undoubtedly good for at least a few hundred volts.
     
    Glenn likes this.
  3. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Comment about above - my understanding is that JB Weld is metal filled epoxy. I'd think epoxy is fine as a potting compound, but the metal filler would seem less than ideal for an electrical application. Silicone/RTV is bad too because it contains acetic acid that is released when the material cures. This will corrode your wiring. You're better off with the generic 2-part epoxy from the hardware store, with no metal filler, or an actual potting compound for electronics. MG Chemicals 832HD-25ML - Black Encapsulating Epoxy, 25ml
     
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  4. 47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    Learn even more. Thanks!
     
  5. colojeepguy

    colojeepguy Colorado Springs

    This is a great idea but it's a damm shame that replacement parts quality has deteriorated so much that it's nessecary.
     
    fhoehle, dozerjim, ITLKSEZ and 3 others like this.
  6. Glenn

    Glenn Kinda grumpy old man Staff Member

    No argument about that from me.
     
    dozerjim and 65CJ5 SRD like this.
  7. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    I've used it up to 220 volts, it's not conductive.
     
  8. Mcruff

    Mcruff Earlycj5 Machinist

    When you say JB weld you have to specify, they make a dozen epoxy's or more and not all of them have metal in them.
     
  9. Rick Whitson

    Rick Whitson Detroit Area 2024 Sponsor 2022 Sponsor

    You Guys Amaze me, I have never had a bad condenser, like Pete says, but I don't have any new ones earthier. I have three distributors, and three or four old condensers, so I have not given it a thought. I keep a set of points and a condenser in my tool box, but as of yet never needed it. With all the problems you are talking about I am thinking about buying an electronic just in case I can't get a good condenser. I would like to have one like CJ 5A made for back up. Good Luck
     
  10. garage gnome

    garage gnome ECJ5 welder

    Bookmarked this thread for later use.

    The original condenser still works in my 1918 Titan tractor. But if it gets wet, forget it. I have the same capacitors for the mag and one day I'll replace it. But for now, it works.
     
    Last edited: Oct 19, 2019
  11. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    In my case it was the black metal filled- it may be metal but it appears the epoxy fully coats the particles preventing conduction between them.
     
  12. Greevesman

    Greevesman Member

    So will you make me one for say $25? Using the Black Encapsulating Epoxy?
     
    dozerjim likes this.
  13. dane71

    dane71 Member

    Will things not run right when the condenser goes bad? Or will it just ruin the points faster?

    I'm new to the points thing and am gonna be putting on some miles next year!
     
  14. FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    It stops running when the condensor goes bad.
     
    dane71 likes this.
  15. termin8ed

    termin8ed I didn't do it Staff Member

    Years ago when i was taking electronic classes i put too much voltage on a small capacitor. It sounded like a 22 going off in my room. The dielectric "fuzz" was floating around after that:whistle:
     
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  16. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Or... the points crud up rapidly due to excess arc-ing. The engine will run badly.
     
    65CJ5 SRD likes this.
  17. Greevesman

    Greevesman Member

    Thirty five bucks!
     
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  18. 65CJ5 SRD

    65CJ5 SRD Member

    Went with Pertronix on my cj. Only failure I had with that was the little donut thing came apart one time due to centrifugal force. Pertronix sent a new part and no problem since then. I also wrapped the new donut in electrical tape just in case. Never liked points. My dad's 65 Chevy wagon had little problem with them but my wife's Pinto ate them like candy. That Pinto crapped out constantly due to bad points. And my Jeep had terrible point slap at high revs. No more points for me as long as I have any alternative.
     
  19. Alan28

    Alan28 Well-Known Member 2022 Sponsor

    Am I able/allowed to answer to this idea?
     
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  20. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    :clap: