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Rear Diff Swap
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Markmein
 


Member Since: 07 Jul 2012
Location: Chester
Posts: 180

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4
Rear Diff Swap

Can anyone help, will an approx 2010 D4 rear diff (3.54:1 D4 auto) fit a 2005 D3 (3.54:1 auto), has anyone done this?
The D4 unit appears to have some kind of harmonic damper on it but other than that look similar.
Thought it best to see if it’s been done by anyone, before I start taking bits off.
  
Post #220427022nd Jan 2021 12:30 am
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Admirable
 


Member Since: 19 Jul 2015
Location: Fife
Posts: 1007

Ukraine 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

Yes, I've fitted a 2011 D4 diff to my 2007 D3 auto as above, same ratio.

It was cheaper for me to buy a used diff from a breakers than have my original diff reconditioned.
  
Post #220428922nd Jan 2021 7:50 am
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Markmein
 


Member Since: 07 Jul 2012
Location: Chester
Posts: 180

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4

Great I thought they look the same casting shapes, I’ve got a grumbling bearing and loads of backlash and had the same idea, also quicker the swap than take off and have to rebuild the original.
  
Post #220429322nd Jan 2021 8:10 am
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Admirable
 


Member Since: 19 Jul 2015
Location: Fife
Posts: 1007

Ukraine 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

They are very heavy!

There is a thread on here somewhere on removing/replacing a diff.
  
Post #220430722nd Jan 2021 8:42 am
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motorworks
 


Member Since: 14 Nov 2019
Location: Usk
Posts: 401

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

I replaced a rear diff last month, with exhaust in place. I will remove exhaust in future. I weighed the old diff - 48kg. They can be awkward to manouvre, being top heavy and with a round base.

Still much easier to change than front diff which is lighter (32kg) but fits in a very tight space. I made a simple tool to aid removal and refitting. I may share that in another thread.
 Chris  
Post #221266121st Feb 2021 7:03 pm
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