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T-90 inputs????

Discussion in 'Early CJ5 and CJ6 Tech' started by jasonjp62, Jul 10, 2013.

  1. Jul 10, 2013
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
    Joined:
    Aug 15, 2009
    Messages:
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    [​IMG]


    Hey guys,

    Have you ever seen this? I was starting my t-90c conversion on my 62. the longer input is the one I just took out of my t-90a the shorter one is the t-90c input. Why is the t-90c input shorter than the t-90a input? never seen this before. Any ideas?
     
    Last edited: Jul 10, 2013
    jasonjp62, Jul 10, 2013
    #1
  2. Jul 10, 2013
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    Probably from an International Scout 80.


    Sent from my iPhone
     
    nickmil, Jul 10, 2013
    #2
  3. Jul 10, 2013
    jasonjp62

    jasonjp62 Member

    Pennsboro WV.
    Joined:
    Aug 15, 2009
    Messages:
    799
     
    jasonjp62, Jul 10, 2013
    #3
  4. Jul 11, 2013
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
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    I'm the one that sold that to Jason and didn't know it was different (not much of a Scout person) along with the bottom gear cluster it mates with. Always had it off the side so I never dawned on me to check the length.

    Nick - the rest should be fine?

    I'll have to help Jason find one since I got him in this mess :( I stopped looking at the T90C stuff years ago when I changed directions for my builds.
     
    Warloch, Jul 11, 2013
    #4
  5. Jul 11, 2013
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
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    12,529
    Look at the teeth and make sure they are cut the same direction as Jeep. Some IH T-90's are cut backwards. If cut the same way then you should just need a main drive gear and front bearing retainer to match. Assuming the tooth counts are the same which I "think" (going from memory here) they should be.


    Sent from my iPhone
     
    nickmil, Jul 11, 2013
    #5
  6. Jul 11, 2013
    oldtime

    oldtime oldtime

    St. Charles,...
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    Aug 14, 2006
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    The desired maindrive gear must be used with the appropriate countershaft gear.

    The T90 A has 18 driving teeth on the maindrive gear and 33 on the driven counterstaft.
    The T90 C has 16 driving teeth on the maindrive gear and 35 on the driven counterstaft.

    The Jeep T90 C maindrive gear is about 1/8" longer than the Jeep T 90 A maindrive gear.
     
    oldtime, Jul 11, 2013
    #6
  7. Jul 12, 2013
    duffer

    duffer Rodent Power

    Bozeman, MT
    Joined:
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    4,519
    Judging by the teeth spacing on the photo, it does appear the teeth count is different on those, along with the length difference.
     
    duffer, Jul 12, 2013
    #7
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