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Rear Diff

posted by  sdodd on  Thu Oct 21 01:51 CST 2004
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last visit: Sat Jan 23 00:38 CST 2010
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Just a quick thought. If you found a rear end from another 740/940 it should bolt in fine. However, pay close attention to the year your car is ('86) and the year the donor is. The tone wheels between different years changed and will result in faulty speedo operation. (and ABS operation if you had it) Over the 14 years the 740/940s were made there were ~5 different tone wheels. Go to your dealer to find precise info, but my best guess is that an '85-'87 740 rear should have the same tone wheel as your car. If the donor car had ABS (780/760/740turbo) then the tone wheel might be different. I'm almost certain that anything newer than '88 you will have a different tone wheel.

Beware as replacing the tone wheel requires differential removal. And FINDING the correct tone wheel can be a real nightmare.

good luck!
-simon






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MESSAGES IN THIS THREAD

New Rear Diff
posted by  Walbum  on Tue Oct 19 04:20 CST 2004 >
  • New Rear Diff
    posted by  Michael Yount  on Tue Oct 19 11:31 CST 2004 >
    • New Rear Diff
      posted by  Walbum  on Wed Oct 20 10:44 CST 2004 >
      • New Rear Diff
        posted by  Michael Yount  on Wed Oct 20 11:17 CST 2004 >
        • New Rear Diff
          posted by  Walbum  on Wed Nov 3 10:28 CST 2004 >
          • New Rear Diff
            posted by  someone claiming to be Michael Yount  on Wed Nov 3 12:46 CST 2004 >
      • New Rear Diff
        posted by  sdodd  on Thu Oct 21 01:51 CST 2004 >
        • New Rear Diff
          posted by  Walbum  on Fri Oct 22 04:08 CST 2004 >
          • New Rear Diff
            posted by  Caveman  on Fri Oct 22 13:42 CST 2004 >


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