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Twin Stick

Discussion in 'Early CJ5 and CJ6 Tech' started by jeepstar, Mar 13, 2017.

Page 2 of 2
  1. Mar 15, 2017
    jeepstar

    jeepstar Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sheboygan
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    I don't know what you mean by what flavor
     
    jeepstar, Mar 15, 2017
    #21
  2. Mar 15, 2017
    Jrobz23

    Jrobz23 Member

    Northern, WI
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    There are 3 flavors to my knowledge: Early/little bore/little shaft, mid/little bore/big shaft, late/big bore/big shaft.

    My 61, which has a mid, has a single stick. My 57, also a mid, has twin sticks.
     
    Jrobz23, Mar 15, 2017
    #22
  3. Mar 15, 2017
    jeepstar

    jeepstar Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sheboygan
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    well, shoot. I've got an all original from 1970, so any guess is a good one, without opening it up.
     
    jeepstar, Mar 15, 2017
    #23
  4. Mar 15, 2017
    BJHitson60

    BJHitson60 Member

    San Rafael, CA
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    Nov 20, 2009
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    I definitely prefer the twin stick because they are easier to reach and provide for a more definitive feel. However, if you are running an overdrive, it does get a little "busy" with shifters concentrated within that small area and setting up a boot or boots to seal the all the shifters is not quite as simple as when you run just the overdrive to the right of the transmission shifter.
     
    BJHitson60, Mar 15, 2017
    #24
  5. Mar 15, 2017
    mortten

    mortten I can’t put my finger on it 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Peninsula, Ohio
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    I would imagine a 70 would have a big bore big shaft. Don't know that it makes a difference putting a twin stick on.
     
    mortten, Mar 15, 2017
    #25
  6. Mar 15, 2017
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
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    This from Novak as I believe you have f134: If the jeep was originally an f134 then the D18 would be the mid generation with the smaller sized 3-5/32" bore but with the larger 1-1/4" intermediate shaft.

    Later Civilian, 1955-1971
    In 1955 (this varies by a year or so on some models; no doubt while Willys-Overland was using up its remaining inventory) Jeeps received the Dana 18 with an 1-1/4" intermediate shaft. This improvement was not intended to increase the shear strength of the pin, but to increase the bearing area and the number of bearings. Free needle rollers, then, replaced the earlier and significantly fewer caged needle rollers. The locator bore continued to be the 3-5/32" diameter.

    I believe the large case with 4" bore and 1-1/4" shaft was only found behind the V6 option from 1966-1971. Obviously most of my info comes from Novak here:
    The Novak Guide to the Dana Spicer Model 18 Transfer Case

    Of course, you know best how 'original' your jeep is... stuff gets changed over the years from the PO
     
    FinoCJ, Mar 15, 2017
    #26
  7. Mar 15, 2017
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Twin2, Mar 15, 2017
    #27
  8. Mar 15, 2017
    mortten

    mortten I can’t put my finger on it 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Peninsula, Ohio
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    I took a twin stick off of a 46 D18 small bore and put it on a 69 D18 large bore.
     
    mortten, Mar 15, 2017
    #28
  9. Mar 15, 2017
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    Small, medium, and big bore should only matter to you when installing the overdrive. The shifter mechanisms should be the same for all three.
     
    1960willyscj5, Mar 15, 2017
    #29
    jeepstar likes this.
  10. Mar 18, 2017
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    I've been dealing with this exact problem...I've never really had a satisfactory shift boot for the OD until now.
    I bought a 3 lever boot. Don't really like the look of it but I suppose I'll get used to it, and it does the job. 20170317_200608.jpg 20170317_195507.jpg
     
    colojeepguy, Mar 18, 2017
    #30
  11. Mar 18, 2017
    BJHitson60

    BJHitson60 Member

    San Rafael, CA
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    Pretty cool - I don't think I have ever seen a boot like that...
     
    BJHitson60, Mar 18, 2017
    #31
  12. Mar 18, 2017
    Tom_Hartz

    Tom_Hartz Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    North Carolina
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    That looks clean.
     
    Tom_Hartz, Mar 18, 2017
    #32
  13. Mar 18, 2017
    colojeepguy

    colojeepguy Colorado Springs

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    colojeepguy, Mar 18, 2017
    #33
    Twin2 likes this.
  14. Mar 18, 2017
    mortten

    mortten I can’t put my finger on it 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Peninsula, Ohio
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    Don't think I ever saw a high low lever that short. OD shifter looks familiar though.
     
    mortten, Mar 18, 2017
    #34
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