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NP231 input shaft diameter?

Discussion in 'Wrangler TJ (1996-2006)' started by BigBlueZJ, Feb 18, 2017.

  1. Feb 18, 2017 at 6:09 PM
    #1
    BigBlueZJ

    BigBlueZJ [OP] Member

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    07 Rubicon axles, Elockers, 4.5" mid travel lift kit, Rubicon express heavy duty long arms, 4.10 gears, JKS Disconnects, Diff Breathers, Built Driveshafts, NP231 Transfer case swap with slip yoke eliminator kit, ARB Front bumper and custom Rear bumper, Warn 8,500 pound winch, Hid Spot lights, Led light bar.
    I just bought an NP231 from a guy who took it out of a 2005 TJ v6 automatic trans. I can't find anywhere that says what the diameter of the input shaft.
     
  2. Feb 19, 2017 at 6:38 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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  3. Feb 20, 2017 at 12:13 AM
    #3
    BigBlueZJ

    BigBlueZJ [OP] Member

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    Blue 1997 Jeep Grand Cherokee
    07 Rubicon axles, Elockers, 4.5" mid travel lift kit, Rubicon express heavy duty long arms, 4.10 gears, JKS Disconnects, Diff Breathers, Built Driveshafts, NP231 Transfer case swap with slip yoke eliminator kit, ARB Front bumper and custom Rear bumper, Warn 8,500 pound winch, Hid Spot lights, Led light bar.
    Would I be able to run the transfer case with anything less than an SYE kit or will I need a new input shaft. I'm not sure as to the length because on Novak it doesn't have the 42rle listed for input shaft length. I know it is a 23 spline which works but is it the same size?
     
  4. Feb 20, 2017 at 6:19 AM
    #4
    OFFGRID

    OFFGRID Well-Known Member

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    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    Buy a $15 caliper and measure both your old and new Tcase and compare. Also measure the distance from the mounting surface to the end of the input shaft. A= the distance from end of shaft to mounting surface.

    np231 input paint.jpg
     
    BigBlueZJ [OP] and chris4x4 like this.
  5. Feb 20, 2017 at 3:21 PM
    #5
    BigBlueZJ

    BigBlueZJ [OP] Member

    Joined:
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    Messages:
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    Male
    First Name:
    Thomas
    Vehicle:
    Blue 1997 Jeep Grand Cherokee
    07 Rubicon axles, Elockers, 4.5" mid travel lift kit, Rubicon express heavy duty long arms, 4.10 gears, JKS Disconnects, Diff Breathers, Built Driveshafts, NP231 Transfer case swap with slip yoke eliminator kit, ARB Front bumper and custom Rear bumper, Warn 8,500 pound winch, Hid Spot lights, Led light bar.
    Will do man. Thank you
     
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