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T90 Part Confusion

Discussion in 'Flat Fender Tech' started by EMA, Feb 20, 2019.

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  1. Feb 26, 2019
    70cj5134f

    70cj5134f Member

    East Tn
    Joined:
    Aug 18, 2018
    Messages:
    660
    If your town still has an independent auto parts that has benn around a while,(we still have 2),
    Show them your old oil soaked disc, they'll be able to match it up. Usually old parts stores have old parts store guys, nothing a computer can do is as valuable as experiance!
     
  2. Feb 26, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    59
    Won't mention the "Chain Stores" all around me... o_O
    Great bunch of guys, but all they have are catalogs.
    Last one of the older stores closed here about six years ago.
    Now the funny part about going to a "rebuilder".... It is about 2-hours to Los Angeles from here.
    I found it on the Web.... Packed up the wife and disc.
    When we got there, wanted what vehicle it was off so he could make sure it was correct for torque & horsepower of my vehicle.
    I tried to explain, but he was not having it.
    Wife & I went to some shops here where her friends frequent so it was not a total loss of a day.
    Gone are the Ol' Speed Shops of the 70's I used to build engines for...
    Really miss those days!

    Thanks,

    George
     
  3. Feb 26, 2019
    70cj5134f

    70cj5134f Member

    East Tn
    Joined:
    Aug 18, 2018
    Messages:
    660
    We still got a real speed shop, he supplies our local dirt, and drag track bunch.
    Also got s regular parts store, both been their since the late 60s.
    2nd gen owners now, he'll their in their 60s?
    Just lucky I guess?
    Morristown TN, not a big town?
     
  4. Feb 27, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    59
    You folks have all the fun :bananatool:
     
  5. Feb 27, 2019
    Keys5a

    Keys5a Sponsor Sponsor

    Joined:
    Jan 23, 2014
    Messages:
    2,097
    The 9 1/4" clutch disc with the 1 1/8"-10 spline is used on the Willys wagons/trucks with the 226 flathead six.
    -Donny
     
  6. Feb 28, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
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    59
    Got one coming...thanks..!
    George
     
  7. Mar 12, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    59
    Have some confusion again related to this crazy trans "rebuild"...
    Have the case all cleaned and prepped... New Counter-gear installed with all new bearings & spacers.
    Assembled the Main-Shaft with all new.
    Started to "prep" the new Input-shaft with new bearing...That went well.
    Was installing the shaft seal into the front bearing retainer housing when I realized it was not going to fit..?
    The p/n ( Omix ) 1888.45 or Novak p/n 12363 won't fit..... ( SKF box: 12363 )
    The housing casting number is T86AA-6A..????
    Bore Diameter measures: 1.610"
    Input Shaft is the Omix p/n: 18880.09 ( 11-1/2" x 1.125" Shaft ( They refer to this shaft as: V8-GM Conversion )
    Is it possible to have a T86 housing on a T90A trans..?
    If so.... Looking for this seal...???

    George
     
  8. Mar 12, 2019
    oldtime

    oldtime oldtime

    St. Charles,...
    Joined:
    Aug 14, 2006
    Messages:
    2,646
    Yes you could Have T90 -J guts inside a T86AA transmission case.
    I imajine that the correct input seal must be the one used with the T86AA bearing retainer...
     
  9. Mar 12, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    59
    Did some research on the T86 on the Crown site... Turns out the seal they call out, p/n 83300041 looks to fit the bearing retainer housing I have?
    There are no dimensions given but by looking at the seal picture they offer...looks to be like the one I destroyed getting out during teardown.
    Have also finished machining up a correct adapter to take the place of the crap that was there that caused all the damage.
    The seal will take a couple days to get here...meantime will get the rest put together tomorrow.
    Hope I am past all the "weird" stuff.
    What is funny.... Years ago I remember our friend driving this around...even went for a ride in with him.
    No weird sounds or grinding I remembered then.... but WOW..!
    With no regard to trans to engine alignment...totally destroyed EVERY part in the trans + the case was split with a crack in it as well.
    The only parts salvaged: Input Shaft Retainer Housing.
    Used only the case, Reverse Idler Gear & shaft from the other T90 ( IH version ) that I purchased for parts.
    Turned out.... Everything else in the ( IH ) T90 was a little different, ( mainly the Main-shaft & 2nd gear. )

    George
     
  10. Mar 13, 2019
    Warloch

    Warloch Did you say Flattie??? Staff Member Sponsor

    Falcon, CO
    Joined:
    Mar 4, 2003
    Messages:
    4,417
    FWIW - the only IH T90 I had and took apart had T90J parts in it. The lower cluster has different tooth counts and while it can be put together with standard T90 parts - it will explode in time.
     
  11. Mar 15, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    59
    Yeah... The " IH " trans, markings on the case were T90A-1...used an input shaft that had the other tooth count of 16-teeth...matched to the Cluster correctly. The real difference between the " IH " internals were the Main-shaft, 2nd gear, and the Input Shaft. The Main-shaft diameter where the 2nd gear is located is of a larger diameter....and the portion of the shaft where it goes into the end of the Input-shaft is also larger.
    I plan to assemble the remaining T90 trans with these remaining "matched" parts with new bearings to get another working T90 which I will eventually sell to offset the rebuild cost of the trans going back in. I can't use this as a backup as the Input-shaft is not right for my setup, ( GM style 11" Input-shaft ).
    For such a "simple" and very "basic" transmission which I see could be field-stripped out in the field by any G.I. with very few tools makes sense..!!!
    back years ago I used to Race-Prep Muncies, Borg Warner's & Lenco's for a local speed shop back in the 70'S... :)
    What ever happened to SIMPLE..?
     
  12. Mar 15, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    59
    BTW.....
    Can anyone steer me in finding the Drive-shaft Brake Assembly that would bolt up ( factory ) to a Ford T98 ( 1958-62 vintage )…?
    I put back together a 3/4T Four-wheel drive truck that has this trans... When I was putting back together the drivetrain...I removed this as the rear axle I changed out for a Currie unit that had drum brakes with the E-Brake cables.
    On occasion I have found that if I was sliding down a hill a "drivetrain brake would help hold all four corners rather than just the rear.
    The setup I have is the T98 transmission with the "divorced " version of the D20 about a foot + located further back with a short driveshaft connecting the two.
    Was not thinking this through when I removed it.

    George
     
  13. Apr 23, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    59
    Just an update...
    Have the trans / D18 back onto the engine, and buttoned up.
    Still on the stand so I decided to run the valves and test fire before putting back in the Jeep.
    Runs good....
    I did however.... re-install the missing E-Brake assembly on the D18.....
    Thanks to Bruce...!
    He sold me the needed parts needed to complete the assembly.
    Since the brake drum requires a different U-Joint connection...I am stalled again trying to locate this part.
    If anyone out there has spares.... And would be willing to part with... let me know please.
    All I really need is the four-bolt flange that fits the 1310 series joint...
    BTW...Will need a front driveshaft once I get this in the Jeep and get a length.
    Thanks for all the information.
    Then it is onto the axles.... :)
     

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