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D18 twin stick conversion

Discussion in 'Early CJ5 and CJ6 Tech' started by sailorjeeper, Jan 20, 2013.

  1. Jan 20, 2013
    sailorjeeper

    sailorjeeper What... me worry?

    Spiro, OK
    Joined:
    Oct 6, 2010
    Messages:
    29
    I vaguely remember someone on here talking about a possible catastrophic result from leaving out the "pill" which goes between the shift rails but I can't remember enough detail to find the original thread. Can someone please help my feeble memory before I shoot myself in the foot?
     
  2. Jan 20, 2013
    piffey263

    piffey263 Active Member

    Medford, OR
    Joined:
    Oct 16, 2008
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    1,214
    2wd low can break stuff if you are not careful (allot of torque), also sometimes the transfer case can pop out of gear.
     
  3. Jan 20, 2013
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
    Joined:
    Aug 15, 2009
    Messages:
    800
    I love my 2 low......I do most of my wheeling in 2 low, until it get really cranky. I never had any issues of it jumping out of gear.
     
  4. Jan 20, 2013
    chuck123wapati

    chuck123wapati Member

    wyoming
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    Jun 18, 2008
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    761
     
  5. Jan 20, 2013
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
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    Aug 7, 2003
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    4,541
     
  6. Jan 20, 2013
    68BuickV6

    68BuickV6 Well-Known Member

    Hesperia, CA.
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    Mar 12, 2012
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    2,160
    Don't really like 2 wheel low, but I've used it once or twice.

    You shouldn't have any real issues as long as everything is in working order, just keep in mind it's extra torquey.
     
  7. Jan 20, 2013
    noahlon

    noahlon Old Fart

    Pine Ridge, AR
    Joined:
    Dec 22, 2010
    Messages:
    206
    I did the conversion and left the pill out so I could get true twin stick operation. Love it!!!!!!!!
    [​IMG]
     
  8. Jan 20, 2013
    duffer

    duffer Rodent Power

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    4,552
    No issues here either leaving it out and it's been out of the 3B cases for 25 to 30 years. I can't see what difference in rear axle torque it would really make unless you never have wheel spin.
     
  9. Jan 20, 2013
    aallison

    aallison 74 cj6, 76 cj5. Has anyone seen my screwdriver?

    Green Cove...
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    Nov 24, 2006
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    With the pill in, you cant get the transfer case in a Hi-Lo situation were one output shaft is in low range and the other axle is in high range. If the interlock pill is removed, you can shift into a Hi-Lo if you are not paying attention. If this happens, bad things can happen because your rear axle will be turning in low range and your front axle will be in high range (or the other way around, depending on the postiion of the sticks).

    The real benifit is you can be in rear low only or you can shift the rear into neutral and put the front in either high or low and do what is called a front dig. If you use cutting brakes (2 rear parking brakes, one on each rear wheel you can use independantly), and do a front dig, it turns very sharply.

    Those that use them love them but you have to be careful.
     
  10. Jan 20, 2013
    chuck123wapati

    chuck123wapati Member

    wyoming
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    i cant wrap my head around this? if your hi/low is in neutral nothing works front or back ?
     
  11. Jan 20, 2013
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
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    Aug 15, 2009
    Messages:
    800
    This doesn't work with the dana 18......only with the dana 300, not sure about the dana 20 but don't think you can do front digs with the dana 20 either


    Dana 18 is 2 hi 2 low 4 hi 4 low or n
     
  12. Jan 20, 2013
    hudsonhawk

    hudsonhawk Well-Known Member

    North Texas...
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    Feb 4, 2005
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    A Dana 20 will allow you to control each axle independent of the other if you remove the detent pill. I had mine set up this way. Loved it.
     
  13. Jan 20, 2013
    Jamco6000

    Jamco6000 Member

    Baton Rouge, LA
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    Apr 14, 2012
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    Think you're thinking of the 300? Only one (other than atlas) that I know can dig.
     
  14. Jan 20, 2013
    hudsonhawk

    hudsonhawk Well-Known Member

    North Texas...
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    Feb 4, 2005
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    The Dana 20 can be set up that way too.
     
  15. Jan 20, 2013
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    Sep 23, 2002
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    Dana 18 cannot get front and rear in different ranges period.
    Dana 20 and 300 can if the interlock pill has been removed on a stock transfer case. With some shift rail mods you can leave the interlock pills in and get front only high and low range, rear only hi and low range, front an rear low and high range, but not rear low and front hi, and vice verse.
    Done it on a bunch of 300's. lots of writeups on the net on the 300. Recently prototyped a setup on a 20 and it worked awesome with a twin stick conversion. Will not work on a single stick setup.


    Sent from my iPhone
     
  16. Jan 21, 2013
    aallison

    aallison 74 cj6, 76 cj5. Has anyone seen my screwdriver?

    Green Cove...
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    Nov 24, 2006
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    Oh. Never mind me then. I always thought the D18 would do the same as the D20 with the pills removed. I guess you can put that in the back of your mind in case you ever want to use a later Dana transfercase. Learned a little something new.....
     
  17. Jan 21, 2013
    04sd2

    04sd2 Member

    Lehigh Valley, PA
    Joined:
    May 30, 2011
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    111
    2wd low range is especially useful when you have front and rear lockers, makes it a lot easier to steer on trails where you don't need the 4wd.
     
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