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Point Bounce Anyone?

Discussion in 'Early CJ5 and CJ6 Tech' started by Howard Eisenhauer, Sep 10, 2017.

  1. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    So I was headed into work a few weeks ago & since it was a nice day I was taking Tonk. :)

    Decided to take the highway for a change & about 2 minutes into the 60 MPH+ period the engine backfired & died :(

    Coasting off to the shoulder I quickly discovered that the points in my dizzy I bought from Walcks, with all of about 500 miles on it, had busted- the steel tension spring has snapped right at the end.

    Thankfully I had a spare set I bought from Walcks , just in case, at the beginning of summer.

    Got then in, sort of set, & managed to limp home with an engine miss.

    Played with it a bit off & on but I had time today to really dig into it.

    I'm idling very smoothly at around 800 rpm, timing is set to 5 degrees BDTC & dwell is at about 42 degrees.

    When I give it gas the dwell starts dropping & the engine starts missing & will not pass 2000 RPM.

    While the "old" points had a single steel spring, the replacement set have a copper strap with a steel C-clip kind of arraignment that honestly doesn't seem to do much.

    To my un-calibrated fingers there doesn't seem to be much tension on the points, I'm wondering if the little Boogers are bouncing.

    Input anyone?

    Apart from "pertronix"??

    ?
     
  2. Glenn

    Glenn Kinda grumpy old man Staff Member

    Bounce as in lobe action throwing them open past the set gap? Wouldn't surprise me.
     
  3. wheelie

    wheelie beeg dummy 2024 Sponsor 2023 Sponsor

    Whose points is Walck's selling? I'm guessing Omix replacement stuff. Just guessing. I'd look for name brand parts from somewhere.
     
  4. PeteL

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

    In the days of yore, point spring tension was a specification to be checked and adjusted.

    17 to 20 ounces for the F-head.
     
  5. 3b a runnin

    3b a runnin Active Member 2023 Sponsor 2022 Sponsor

    I have a spare set that I tried when I had coil problems and found that the screw that holds the wires for the coil and condenser was hitting the spring on the points when the points were on the lobe of the dist. IIRC Was something to that effect. My memory is gone
     
  6. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Yeah no way there's anywhere near that much tension, I'm wondering if maybe the c clip thingie is supposed to go on the "inside" of the copper strap.

    H.
     
  7. PeteL

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

    Not sure what you mean by a C-clip. Ones I've seen with a 'double layer' strap/spring had the copper loose on the outside of the bend, IIRC.

    [​IMG]
     
  8. Glenn

    Glenn Kinda grumpy old man Staff Member

    Should be only one way it will fit right.
     
  9. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    That's it- iIgot it together backwards :oops:

    Thanks Pete :)

    H.
     
  10. PeteL

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

  11. Glenn

    Glenn Kinda grumpy old man Staff Member

    Glad you got it! Obviously it runs better now.
     
  12. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    I'll get to it tonight, let you know tomorrow.
     
  13. Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

  14. Glenn

    Glenn Kinda grumpy old man Staff Member

    Cool! :)