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No More Bad Condensors

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

  1. Oct 18, 2019
    timgr

    timgr Jeepin' Nerd Sponsor 2019 Sponsor

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    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.
     
    Glenn likes this.
  2. Oct 18, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    Stock capacitors are undoubtedly good for at least a few hundred volts.
     
    Glenn likes this.
  3. Oct 18, 2019
    timgr

    timgr Jeepin' Nerd Sponsor 2019 Sponsor

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    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
     
    Jrobz23, ITLKSEZ, 47v6 and 1 other person like this.
  4. Oct 18, 2019
    47v6

    47v6 junk wrecker! Sponsor

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    Learn even more. Thanks!
     
  5. Oct 18, 2019
    colojeepguy

    colojeepguy Colorado Springs Sponsor 2019 Sponsor

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    This is a great idea but it's a damm shame that replacement parts quality has deteriorated so much that it's nessecary.
     
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  6. Oct 18, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

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    No argument about that from me.
     
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  7. Oct 18, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    I've used it up to 220 volts, it's not conductive.
     
  8. Oct 18, 2019
    Mcruff

    Mcruff Earlycj5 Machinist Sponsor

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    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. Oct 19, 2019
    Rick Whitson

    Rick Whitson Detroit Area Sponsor 2019 Sponsor

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    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. Oct 19, 2019
    garage gnome

    garage gnome Rust polisher Sponsor

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    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. Oct 19, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    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. Oct 19, 2019
    Greevesman

    Greevesman Sponsor Sponsor

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    So will you make me one for say $25? Using the Black Encapsulating Epoxy?
     
  13. Oct 19, 2019
    dane71

    dane71 Member 2019 Sponsor

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    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. Oct 19, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

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    It stops running when the condensor goes bad.
     
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  15. Oct 19, 2019
    termin8ed

    termin8ed I didn't do it Staff Member Sponsor

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    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. Oct 19, 2019
    PeteL

    PeteL Member Sponsor 2019 Sponsor

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    Or... the points crud up rapidly due to excess arc-ing. The engine will run badly.
     
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  17. Oct 19, 2019
    Greevesman

    Greevesman Sponsor Sponsor

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    Thirty five bucks!
     
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  18. Oct 20, 2019
    65CJ5 SRD

    65CJ5 SRD Member

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    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. Oct 20, 2019
    Alan28

    Alan28 Well-Known Member Sponsor 2019 Sponsor

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    Am I able/allowed to answer to this idea?
     
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  20. Oct 20, 2019
    PeteL

    PeteL Member Sponsor 2019 Sponsor

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    :clap:
     

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