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Dauntless Idle Speed

Discussion in 'Early CJ5 and CJ6 Tech' started by homersdog, May 12, 2012.

  1. May 12, 2012
    homersdog

    homersdog Tulsa, Ok 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Tulsa, OK
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    Just throwing this out there for opinions/feedback.

    What do you set your Dauntless' idle speed at?

    Why are there different specs for different model years? Was it because of the pollution stuff they put on the later years (70-71)?

    My spec sticker says 650-700 rpm, I have always used that speed until recently. There is a link to a company that makes reproduction spec stickers, and I saw one for the old v6's. I saw that some V6's were factory set 700-750.

    A few weeks ago I set mine up to that and I like it. It warms up faster, sounds better, idles smoother and the engine responds better when starting out from a stop.

    I still use 650-700 when setting my timing and dwell, but boost it to 725 for operation. I Like it.
     
  2. May 12, 2012
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    Mine's about 750.
     
  3. May 12, 2012
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    I always ran mine at 600-650
     
  4. May 12, 2012
    oldtime

    oldtime oldtime

    St. Charles,...
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    The early standard was 550 RPM.
    If you have a vehicle with automatic transmission the RPM is always set higher.
    Same thing after the introduction of the air/smog pump.
     
  5. May 12, 2012
    piffey263

    piffey263 Active Member

    Medford, OR
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    Chiltons manual says 550, but I run mine like 650-700. I might lower it to see how it runs.
    Originally my idle was really low probably around 600 sounded good but just sounded like its going to die or something when its that low...
     
  6. May 13, 2012
    noahlon

    noahlon Old Fart

    Pine Ridge, AR
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    Dec 22, 2010
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    Mine is sitting right on 500. HEI is 15, plugs at 45, electric fuel pump. It will idle along in first gear with no problem.
     
    Last edited: May 13, 2012
  7. May 13, 2012
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    Personal preference thing. I always set my engines at a grand. I just like it best.
     
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