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What overdrive is this?

Discussion in 'Early CJ5 and CJ6 Tech' started by CJ51962, Oct 30, 2013.

  1. CJ51962

    CJ51962 Member

    Last edited: Oct 30, 2013
    CJ51962, Oct 30, 2013
    #1
  2. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    It looks like an early electric Borg-Warner overdrive that would bolt to the back of a T-89 or similar transmission.

    [​IMG]
    http://www.fordification.com/tech/overdrive.htm

    These were used in a lot of different cars, including Willys apparently. Interesting, but you don't want it.
     
    timgr, Oct 30, 2013
    #2
  3. duffer

    duffer Rodent Power

    My guess from the numbers on the case is that is a R7. Pretty early version of the Borg Warner OD. I believe the units Rancho adapted were R10 or R11's like the one in Tim's picture. It is highly unlikely you could adapt that to a D18, at least not without a lot of custom machine work. I believe Herm still has a few rebuilt Rancho type units available but those do not work in 4x4 like the Warn/Saturn OD's. That said, no reason you couldn't put both in if you have a big engine and room for a rear driveshaft.
     
    duffer, Oct 30, 2013
    #3
  4. CJ51962

    CJ51962 Member

    Well, as always, thank you guys. Guess I won't be making the trip to Tacoma after all!
     
    CJ51962, Oct 30, 2013
    #4
  5. w3srl

    w3srl All-around swell dude Staff Member

    Medium-duty Saginaw 3-speed with OD, not worth crossing the street for in a Jeep application IMHO.


    Sent from my iPad using Tapatalk
     
    w3srl, Oct 30, 2013
    #5
  6. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Picture is from the Fordification site - the OP is looking at a bare R7 overdrive. Just FYI.
     
    timgr, Oct 30, 2013
    #6
  7. nickmil

    nickmil In mothballs.

    Yeah, I don't see a Saginaw 3 speed?


    Sent from my iPhone
     
    nickmil, Oct 30, 2013
    #7
  8. 1960willyscj5

    1960willyscj5 Well-Known Member

    was used in the station wagons and pickups in 2 wheel drive configuration only.
     
    1960willyscj5, Oct 30, 2013
    #8
  9. nickmil

    nickmil In mothballs.

    Was also used in VJ Jeepsters and in Studebakers.


    Sent from my iPhone
     
    nickmil, Oct 30, 2013
    #9
  10. Corveeper

    Corveeper Member

    Right, actually looks a little shorter than the R-10 I used to have.
    Still not worth the effort, IMO.
     
    Corveeper, Oct 31, 2013
    #10