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Coleman19d



Member Since: 08 Jul 2021
Location: North Lincolnshire
Posts: 5

United Kingdom 2010 Range Rover Sport 3.0 TDV6 HSE Stornoway Grey
Differential Differences

Does anyone know what the differences are between the following rear differentials, if any;

1) 2010 Range Rover Sport
2) 2004 - 2009 Range Rover Sport
3) 2004 - 2009 Discovery 3

Are they the same physical shape, ratios, splines etc?

Thanks for your help in advance

Dan


Last edited by Coleman19d on Fri Sep 10 2021 8:43pm. Edited 1 time in total

Post #617072 Wed Sep 08 2021 5:51am
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8800

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Petrol or diesel?

I think that so long as they're the same fuel, the diffs are the same.

Quote:
V8 petrol engine vehicles use a differential with a final drive ratio of 3.73:1 and TdV6 engine vehicles use a
final drive ratio of 3.54.
 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #617092 Wed Sep 08 2021 9:03pm
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Col



Member Since: 02 Sep 2012
Location: Hawkes Bay NZ
Posts: 4817

New Zealand 2013 Range Rover Sport Supercharged Autobiography Santorini Black

The Supercharged petrol uses the 3.54:1 ratio, the Naturally Aspirated petrol uses the 3.73:1. Later cars with 8 speed box use 3.21:1

Cheers
Col

Post #617094 Wed Sep 08 2021 9:46pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8800

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

I did wonder if the workshop manual was correct as it seems to have info that doesn't agree with itself! Rolling with laughter 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #617100 Wed Sep 08 2021 10:49pm
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Col



Member Since: 02 Sep 2012
Location: Hawkes Bay NZ
Posts: 4817

New Zealand 2013 Range Rover Sport Supercharged Autobiography Santorini Black

Just had another look at different editions of the W/S manuals and they do contradict themselves a bit, found another bit that say's N/A petrol engine if it happens to have the electronic locking diff it is the 3.54:1 ration, so who knows, L/R don't appear to and they build the things. Rolling with laughter

Cheers
Col

Post #617101 Thu Sep 09 2021 2:09am
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Coleman19d



Member Since: 08 Jul 2021
Location: North Lincolnshire
Posts: 5

United Kingdom 2010 Range Rover Sport 3.0 TDV6 HSE Stornoway Grey

Diesel Models in particular.

I have a 2010 3.0TDV6 RRS with non locking Diff.

I’m looking into the options for fitting an ARB air locker. I had one in my old D2 and it made such a difference. The fronts aren’t a problem as they supply a part for it. However the rear diff only has a part for D3 2004 - 2009. Hence my question as to what the differences are.

Post #617106 Thu Sep 09 2021 10:37am
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Buckster



Member Since: 05 Mar 2015
Location: Hampshire
Posts: 1656

England 2013 Range Rover Sport SDV6 HSE Orkney Grey

You will have a Centre diff lock on your Sport. I have never not gotten anywhere that a car with a rear locker as well as the centre locker fitted has gone. Maybe slightly less drama with a rear locker installed, instead of just relying on centre locker and traction control, but you can still get just as far if not quite as graceful Laughing 2003 BMW M5 - 5 Litres of V8 Optimax Slurping Goodness in Carbon Black

2013 SDV6 HSE Black Edition- Orkney Grey with Ebony & Ivory. LR Facelift RAI, Genuine G4 Expedition Rack, 4x Warn SBD-160 Spotlights, Warn 9.5XPS Winch, Mantec Underbody Protection and Sump Guard, Full Easy Lift Suspension Module, LR Light Guards, Light Force HTX230 Hybrid spotlights, 18” Compomotive PD1881 on 265/65/18 BF Goodrich KO2, ARB fridge, TuffTrek awning 😎


Last edited by Buckster on Thu Sep 09 2021 9:37pm. Edited 1 time in total

Post #617116 Thu Sep 09 2021 3:40pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8800

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Someone did retro fit the locking rear diff to a Sport (or Disco?). I remember reading a thread about it somewhere. It was a while ago. A bit of a job to do but perhaps better than an aftermarket one because it works with Terrain Response and the various ECUs in the same way as the centre diff lock.

One thing I'm surprised by is that no one has done a mod for the centre diff. It ought to be simple enough to have a switch that energises the centre diff locking motor to move it to the fully locked position. I guess it would need some control system to ensure it only moved enough to lock the clutch pack without burning the electric motor out. Yes, I know that TR locks it automatically, but sometimes it only partly locks it unless you're in the correct TR setting such as rock crawl.

Having said all of that, I've always managed to get out of whatever it is I'm struggling in - for example mud. Yes, it can get messy, but it gets out. Been close to not doing it a couple of times, admittedly, but never had to be towed that I remember. And that's in 2 different RRS each with only the centre diff lock. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #617126 Thu Sep 09 2021 7:57pm
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