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Differential / Rear Axle of 240s: Do they wear out? 200

posted by  someone claiming to be Dave of NorCal on  Thu Mar 29 09:28 CST 2007 [RELATED]

Hi Guys,

I'm in the process of making plans for a transplant of an M46 5-speed transmission from an 85 240 (140k miles) into my 82 242 (300k miles). The transmission and rear axle are all that remain in original condition for the 82 242. Eveything else has been rebuilt or replaced.

The question for me is whether I should also consider trading the rear axle/differential over from the 85 240 to my 82 242? Both vehicles have standard Dana rear ends (neither is a limited-slip). This may be worthwhile if I should anticipate problems with the original rear end now that its passed the 300k mileage mark.

As background: my current differential has been running on Redline synthetic differential oil since it got to the 150k mileage mark, or about half its mileage liftime. There are currently no leaks in either rear end or apparent problems.

Thanks for your thoughts.

Regards, Dave








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    Differential / Rear Axle of 240s: Do they wear out? 200

    posted by  Redwood Chair on  Thu Mar 29 09:38 CST 2007
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Tue Feb 25 21:29 CST 2014
    [RELATED]

    I think the gearing form the 85 is higher.
    They are pretty tough my last 245 had
    400 K and no problems.
    Are you still interested in the AT?
    I never heard from you.
    Ken
    --
    69-145-S ; 71-145-S ; 72-145-E ; 72-1800-ES ; 87-245-DL








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      Differential / Rear Axle of 240s: Do they wear out? 200

      posted by  Rule 308 on  Thu Mar 29 11:41 CST 2007
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue May 8 09:20 CST 2012
      [RELATED]

      Yes they do wear out but it is the exception and not the norm. The ones that I have replaced I have done so because they howled badly, you would've sworn there was a fire engine behind you.

      Mark








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        Differential / Rear Axle of 240s: Do they wear out? 200

        posted by  Maxspeed on  Thu Mar 29 19:04 CST 2007
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Mon Jan 20 21:55 CST 2014
        [RELATED]

        Hey Rule; The ones you replaced, did they make noise or vibration? Or both?
        --
        Max..1989 244 DL 5 Spd., V15 Phase II Cam Bilstein HD, Turbo Swaybars, Poly Bushings all round, Turbo Wheels, Black leather interior, Electric mirrors, LED dash and gauge lights and now NEW ECODES with the turn signals, 1992 black 244 next project








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          Differential / Rear Axle of 240s: Do they wear out? 200

          posted by  Cliff Pope on  Thu Mar 29 19:14 CST 2007
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          last visit: Thu Feb 3 05:28 CST 2011
          [RELATED]

          Mine's done 365,000 miles. It hums very slightly on drive, but otherwise is silent.
          I did have to take up a bit float in one of the half-shaft bearings about 50,000 miles ago, but that is an easy job.







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