DISCO3.CO.UK - View topic - Rear lock diff retrofit for D3 and D4

dsm02c

Member Since: 09 Jun 2015
Location: Dallas, TX
Posts: 1

Can you supply some further detail as to how you were able to create the rear locker "on/off" circuitry?

21st Jun 2015 3:51 am

Dr LC8

Member Since: 31 Jul 2015
Location: Manchester but from Rome
Posts: 164

2012 Discovery 4 3.0 SDV6 GS Auto Nara Bronze

Hi all,

Is anyone aware if there is a ready kit to fit a rear diff lock?

Thanks

Nic

15th Oct 2015 7:24 pm

caverD3

Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922

2012 Discovery 4 3.0 SDV6 SE Auto Fuji White

ARB do one. â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.

16th Oct 2015 1:56 am

kp

Member Since: 27 May 2011
Location: Sticking the Ex back in the skanks bin
Posts: 2824

Why not speak to Quaife or someone about an air locker of some sort?

That would be easier to do and could get a front one as well then.
Plumb them both into the same line and then when pressure is activated both front and rear lock which is kinda what you need when your off road and think you'll get some slippage

Would the locking diff setup from a sport or FF not do the job as well? FFRR Owner, very nearly became a D3 owner

Test piloted a new D4 XS SDV6.. Gone and being forgotten i hope!!
D4 HSE 10MY
D4 XS 11MY
SSRR Destroyer *2

16th Oct 2015 1:49 pm

Dr LC8

Member Since: 31 Jul 2015
Location: Manchester but from Rome
Posts: 164

caverD3 wrote:
ARB do one.

Hi,

I belive is a front one...correct?

Nic

16th Oct 2015 2:11 pm

caverD3

Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922

I think they do rear but only for D3? â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.

17th Oct 2015 12:26 am

parrafin23

Member Since: 04 Dec 2011
Location: Buskeud
Posts: 678

2005 Discovery 3 TDV6 Commercial Auto Java Black

With the arb system, is it possible to tap in to the air res. that is allready on the D3 to get the locks to work?

Mr.P

17th Oct 2015 9:32 am

caverD3

Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922

You should be able to but use a regulator to reduce the pressure.

â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.

17th Oct 2015 1:15 pm

Dr LC8

Member Since: 31 Jul 2015
Location: Manchester but from Rome
Posts: 164

parrafin23 wrote:
With the arb system, is it possible to tap in to the air res. that is allready on the D3 to get the locks to work?

Mr.P

Can you please explain? I am trying to get my head around this.

Thanks

Nic

18th Oct 2015 12:22 pm

caverD3

Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922

The ARB locker is air actuated and uses an air compressor to supply the air pressure.
You should be able to run a line from the tank on a D3 or the line on a D4. The air suspension on a disco works at 240 psi which will likely be too much for the seals on the ARB diff. Putting a regulator in the line will reduce the pressure. The switch will lose very little air so will not affect the compressor. â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.

19th Oct 2015 1:24 am

Dr LC8

Member Since: 31 Jul 2015
Location: Manchester but from Rome
Posts: 164

Still...we are talking about the front, isn't it?

N

19th Oct 2015 12:27 pm

caverD3

Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922

looks like just front for D4

http://www.aulro.com/afvb/d3-d4-rrs/184921...ks-d4.html

http://www.aulro.com/afvb/d3-d4-rrs/202861...d3-d4.html

"Unfortunately, the experience is only half complete, as only the front locker has been installed. The rear was incompatible with 2010 and later LR4s, due to a bearing size change. I know that ARB is working on it, and I hope to have an update soon."

You will need to ask ARB where they are up to.

â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.

20th Oct 2015 3:09 am

Dr LC8

Member Since: 31 Jul 2015
Location: Manchester but from Rome
Posts: 164

Thanks

Nic

20th Oct 2015 8:14 pm

Dr LC8

Member Since: 31 Jul 2015
Location: Manchester but from Rome
Posts: 164

marcap599 wrote:
Well, after a long time I now have my e-diff fitted in the D4.
Actually need to plug the electronic module but all the mechanics job are done.
I can confirm that no half-shafts replacement is required.

Befor to plug-in my electronic control prototype I'm looking for the plug for the temperature sensor, I wish to add this control on the board.

Hi Marcap599, Hi All,

I am back on this topic as I have been looking at different solutions to fit a rear diff lock.
I am exploring the option of retrofitting one without connecting it with the terrain response.

My question for you is: can you retrofit one keeping it disconnected from the terrain respond?
Ideally activated and dis-activated with a button. The thing to understand is: how will it work in synergy with Electronic Traction Control and Terrain Response?
I would guess in the same way the ARB does on the Disco 3.

Can anyone comment and share experience if any?

Many thanks

Nic

13th Jul 2016 3:43 pm

Dr LC8

Member Since: 31 Jul 2015
Location: Manchester but from Rome
Posts: 164

Any news on this front?

Thanks

Nic

31st Dec 2016 1:42 am