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Brandnew Cj5 V6 Question.

Discussion in 'Early CJ5 and CJ6 Tech' started by Tomellen, Jun 27, 2019.

  1. Jun 27, 2019
    Tomellen

    Tomellen Member

    Ticonderoga, NY
    Joined:
    Sep 16, 2016
    Messages:
    300
    After studying the Novak Research clutch info I know the importance of the clutch fork RATO in setting up a clutch system. They say one should always try to match the ratio that was originally in the vehicle. So here is my question: What is the ratio of the clutch fork for a Dauntless with a T86 or T60j transmission. I see several suppliers saying their fork will fit the V6 but they don't say what the RATIO is?? I have 3 forks that will fit but with different ratios. I understand all the math and clearances, etc, just don't know the RATO for my application. I have looked but no luck.


    Thanks!!
     
  2. Jun 27, 2019
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
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    322
    The ratio will affect pedal feel, it’s simply a lever the ratio is the leverage basically. I’m sure someone more articulate than I can say it better
     
  3. Jun 27, 2019
    oldtime

    oldtime oldtime

    St. Charles,...
    Joined:
    Aug 14, 2006
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    2,707
    GM #1378486 lever for D-225
     
    Bowbender likes this.
  4. Jun 27, 2019
    tarry99

    tarry99 Member

    Northern California
    Joined:
    Oct 29, 2012
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    3,783
    If you have the original parts............measure them..........normal mechanical ratio for a clutch pedal is about 5.5-6:1............but when it gets to the throw-out fork that ratio normally changes to about 2:1.........If it's greater..... that requires more movement at the tip which equals less travel at the bearing due to space...........Hydraulic clutch systems are a little more temperamental as the slave needs at least 1.00" to 1.50" of travel to net 1/2 that amount of throw out bearing travel + freeplay........( .500 to .750").......Tricky but doable as long as you maintain what you need along the path in either the mechanical since or in bore size and stroke on the hydraulic side...........Novak does have the best slave......and they also sell a neat adjustable throughout bering collar....
     
  5. Jun 28, 2019
    Tomellen

    Tomellen Member

    Ticonderoga, NY
    Joined:
    Sep 16, 2016
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    300
    OLD TIME thanks for answering the question. That's what I needed.
     

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