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Destroyed Dana 70 rear end...

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So, when back in my home town on some R&R/family time, I decided to do a simple quick, 5 sec burnout just for kicks and grins... right in front of my folks place just like old times.  The turbo began to spool all normal, and BANG, followed by some minor crunchy sounds.  

 

No pictures as of yet, but upon removing what used to be the cap on the axle, out fell several one inch triangles of axle, metal chips, and the bearing adjusting nut that formerly held the bearings.  Near as I can tell, the axle broke and wedged itself in there and pushed the hub off about a half inch or so, breaking the nut as it came off. 

 

The hub won't even come off as the bearings are wedged in there.  They move slightly, but won't make it past the messed up tube and threads.  

Edited by CSM

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  • Me78569
    Me78569

    I would guess it it was hanging on by a string and Mike just pushed it over the limit.   Maybe we should all do burnouts before leaving to ensure that everything is good..

  • Wild and Free
    Wild and Free

    At least it happened where and how it did, was most likely already broke and this was the icing, could have snapped with a loaded trailer going down the open road then you would have had a lot worse t

  • hex0rz
    hex0rz

    I try not to be mean about it, but pics!

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1 hour ago, CSM said:

 

You've got a dana 80.  Much beefier unit than mine.

I was more worried about the ujoints than anything.

  • Author
1 hour ago, dripley said:

I was more worried about the ujoints than anything.

I was too... which is why I redid my driveshaft.  I never thought I'd kill a dana 60 or 70.  I really think it was badly abused by the previous owner.  

 

It does look like if I can get the torn up hub off and broken shaft out that I will be able to chase the threads and reassemble.  I am just worried that the force that pushed the hub off bent or damaged the differential or center section bearings.  

 

If I can't get the shaft out of the tube I'm going to need to totally disassemble it and push it out backwards.

3 hours ago, notlimah said:

So it putting an 80 in not a straight swap?

Need to shorten the driveshaft 1 inch or buy one for a Dana 80 rig and the u-bolts need to be changed as the axle tube diameter is bigger on the D80 and along with that comes with the matching u-bolt saddle & plates upper and lower to match the bigger diameter of the tubes. Not bad at all, I did the swap on my 02. 

    • Like 1
    1 hour ago, CSM said:

    I was too... which is why I redid my driveshaft.  I never thought I'd kill a dana 60 or 70.  I really think it was badly abused by the previous owner.  

     

    It does look like if I can get the torn up hub off and broken shaft out that I will be able to chase the threads and reassemble.  I am just worried that the force that pushed the hub off bent or damaged the differential or center section bearings.  

     

    If I can't get the shaft out of the tube I'm going to need to totally disassemble it and push it out backwards.

    My drive shaft rebuild is coming soon. I think at 370k i got my moneys worth out of it. Plus I have a small vibration that I believe is in the carrier bearing or the balance is off. Might as well do the whole shaft. 

    1 hour ago, Wild and Free said:

    Need to shorten the driveshaft 1 inch or buy one for a Dana 80 rig and the u-bolts need to be changed as the axle tube diameter is bigger on the D80 and along with that comes with the matching u-bolt saddle & plates upper and lower to match the bigger diameter of the tubes. Not bad at all, I did the swap on my 02. 

     

    Ahh ok, so basically just find a whole 80 for sale, driveshaft and all and your good to go!

    • Like 1

    Yes sir. Just make sure it is a 2500 D80 and not a 3500 dually D80, bit different width of axle tubes.

    Edited by Wild and Free

    • Author
    1 hour ago, Wild and Free said:

    Yes sir. Just make sure it is a 2500 D80 and not a 3500 dually D80, bit different width of axle tubes.

     

    Or... just buy a 3rd gen and don't do crazy mods?  haha.  

    • Like 1

    If I understand this right, d80 for 2500 is a hybrid,  d80 pumpkin and d70 wheel hubs. And d80 in 1 ton has bigger hubs and bearings. Not sure if axles shafts are same or not, I would think they are why else would you just put bigger pumpkin.:think:

    17 minutes ago, CSM said:

     

    Or... just buy a 3rd gen and don't do crazy mods?  haha.  

    The 11.5" AAM is just flat out better and beefier than the D80 overall and much easier to work on and repair hands down.

    • Author

    Is there any markings on the axle to make certain what I have?  I am going to pull the remaining good axle and check the splines, but how do we tell a 70U from a 70?  

    I've never heard of anyone swapping a 3rd gen rear axle in. I'll have to look more into that.

    Ahhh ok! Thanks for saving me the time of looking up a non existent post! Haha

    • Staff
    1 hour ago, Wild and Free said:

    IIRC the 2nd gens ran a 70U with 32 spline axle shafts.

    Right.  Dana 70U axles have 32 splines and were fitted in most 2ed gens.  A Dana 70 has 35 spline axles.   

    • Like 1
    • Author

    I'm looking for a 01.5 to 02 dana 80... if anybody has one...

    • Staff
    1 hour ago, CSM said:

    I'm looking for a 01.5 to 02 dana 80... if anybody has one...

                              I found one on E-BAY but it may be for drum brakes. 

    http://www.ebay.com/itm/2000-2001-Dodge-Ram-2500-Diesel-Spicer-Dana-80-Rear-Axle-limited-slip-New-Oem-/121937623247

     

    Edited by IBMobile

    • Staff

    If it is a drum axle you would need an EGR rear brake conversion kit.  An added pita, I don't think it's worth it .

    • Like 1
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