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Ps Belt

Discussion in 'Early CJ5 and CJ6 Tech' started by colojeepguy, Jan 16, 2022.

  1. Jan 24, 2022
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
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    Good time to know/discuss which boxes/models/years are fast ratio or slow?
     
  2. Jan 24, 2022
    oldtime

    oldtime oldtime

    St. Charles,...
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    This is the slow ratio Saginaw 800 box to get.
    The genuine JeepCJ box embossed with a big “76”.
    It came in 2 basic versions.
    Pre 1980 with 45* inverted flare nut hose fittings.
    Or the post 1980 with “O” ring hose fittings.
    [​IMG]
    [​IMG]
     
    Fireball, timgr and homersdog like this.
  3. Jan 24, 2022
    Steve's 70-5

    Steve's 70-5 Active Member

    Louisville, Ky
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    I got a 4 plus a little more turn steering gear. I think most of it is, the small size of a CJ. With the Jeep being light weight, the PS has little to no resistance in the system, so there is a quick reaction. Poster on the forum say they drive 65 MPH in there Jeeps. I felt unconfutable at 45 MPH. One more thing, driving a full size pickup or mid size vehicle and then driving the smaller CJ you will notice the steering reaction. I though about taking the PS belt off for around town driving but putting back on when you need it will be a PITA
     
  4. Jan 24, 2022
    oldtime

    oldtime oldtime

    St. Charles,...
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    I installed a short length pitman arm which slows the motion from the steer wheel.
    So I actually have to turn the Saginaw 4 full turns in order to hit both steering stops.
     
  5. Jan 24, 2022
    duffer

    duffer Rodent Power

    Bozeman, MT
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    Sep 17, 2009
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    4,460
    I think the biggest reason people think PS is "twitchy" in a CJ is the short 80 or 81" wheelbase combined with a little slack (ok, more than a little in some cases) in the system. If the steering is properly designed and in good condition, it shouldn't be twitchy no matter what the ratio of the sector box is-unless you go to extremes. My 3B is 3.5 turns lock to lock and I think it's perfect on and off-road.
     
    dnb71R2 likes this.
  6. Jan 25, 2022
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    I'll have to double check but I think mine was about 3 1/4 turns.
     
  7. Jan 26, 2022
    44bz

    44bz Member

    Oregon City OR
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    Jul 30, 2018
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    What pitman arm did you use? I have the arm from a 76 and up CJ I think on my 2a, but I think it's a little longer than I want.
     
  8. Jan 27, 2022
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    Do you know the diameter & spline count on the input of this steering gear?
     
  9. Jan 27, 2022
    oldtime

    oldtime oldtime

    St. Charles,...
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    What pitman arm did you use? I have the arm from a 76 and up CJ I think on my 2a, but I think it's a little longer than I want.

    In this case I reused the factory CJ arm.
    I modified it to fit.

    The factory CJ Saginaw box was not mounted at a right angle to the tie rod.
    My flatfender Saginaw box is at a right angle.
    I took a small 3 point file and cut new notches into the factory pitman arm blind splines.
    This way I was able to re-clock the pitman arm square to the tie rod.
    The Jeep factory arm has excess flat area where the tie rod connects.
    Next I moved the pitman tie rod hole by exactly 3/4” distance. Simple drill a tapered hole into that flat area and reshape/grind the original hole off from the end. The hole to hole spread is 5-3/4”when modified.
    [​IMG]
    Another option is to buy a 1970's GM manual pitman with 1/2" of drop. (GM # ???????)
    This arm is already clocked straight and the hole spread is 5-1/2”.
    [​IMG]
     
    Last edited: Jan 27, 2022
  10. Jan 27, 2022
    oldtime

    oldtime oldtime

    St. Charles,...
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    The CJ manual and CJ power boxes used different input diameters and spline counts.
    If I recall correctly
    Manual = 3/4” at 30 spline
    Power = 13/16” at 36 spline
     
  11. Jan 27, 2022
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    Mine is power, with 3/4 30 spline, but I don't think this is standard. I was surprised to be able to re use the same ujoint that I had on the manual gear.
     
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