 | Home > Technical > LT230 Differential question |
 
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2416   
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Thats news to me. Maybe cheaper to build.
Std design were prone to break the pins. At least have seen a couple. Puma 110" SW ............................................................. Earth first. Other planets later |
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25th May 2019 8:39pm |
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| ibexman Member Since: 13 Dec 2008 Location: Essex Posts: 2945 
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Is that a 2 pin unit
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25th May 2019 8:46pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17390 
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Yes, it's a two gear (single cross pin) centre diff. It has me puzzled because I'd never seen one before.
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25th May 2019 9:32pm |
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| ibexman Member Since: 13 Dec 2008 Location: Essex Posts: 2945
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Not very strong then
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25th May 2019 10:25pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17390
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Apparently this type was used on the final production vehicles, which raises some interesting questions. Did JLR run out of normal diffs and get these made on the cheap, or were these a redesign to beef up the diff (with bigger gears) for the 70th V8 specials? The mystery deepens.
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28th May 2019 8:51pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2416
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I imagine machining the 2 piece "usual" diff costs more than casting one piece. And I also imagine the new Defender does not come with the LT230
 Puma 110" SW
............................................................. Earth first. Other planets later |
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28th May 2019 9:01pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298  
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I think the 70th editions come with the Ashcroft atb diff.
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28th May 2019 9:05pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5846 
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I think the top one is an Ashcroft centre ATB 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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29th May 2019 8:10am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17390
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No, the top one is a standard diff out of any standard LT230 transfer box (any except for ones with a diff like the lower one anyway).
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29th May 2019 4:40pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2638  
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I agree with excossak, that top one is definitely not an LR one but an Ashcroft one --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged 
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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29th May 2019 8:05pm |
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| rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2229 
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I assure you that the top one is a normal open differential for the LT230 as fitted to pretty much every LT230 (with the exception Blackwolf has noted) as stated by the OP.
From the LT230 manual: Click image to enlarge 02' 110 TD5 Double Cab Rebuild Thread |
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29th May 2019 8:30pm |
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| diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6093 
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^^ agree
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29th May 2019 8:43pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17390
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There is no doubt whatsoever about the top one, the top one isn't in question. It's the second one that's the mystery.
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29th May 2019 9:06pm |
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| ashtrans Site Sponsor Member Since: 08 Nov 2008 Location: Harpenden Posts: 257
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Hi,
the top one is stock used on most LT230's the lower one is the very late TDCi stock open diff, open 2 pin design used for approx last 2 years of production, major step backwards, making the weak link even weaker !! I guess just a cost saving exercise, certainly not an improvement, Dave |
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30th May 2019 9:33am |
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