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portal pat



Member Since: 05 Jan 2015
Location: South. Very south.
Posts: 32

Australia 2001 Defender 110 Td5 SW Fuji White
CDL.
Just an observation. Wished I'd known earlier how inadequate the factory TD5 CDL is. Been steadily modding my 2001 110 and have gone through 2 of these units now. Have now fitted an Ashcroft unit which will hopefully take the power and extra load better. Everything else is upgraded without issue. Nothing suggests poor workmanship like wrinkles in the duct tape.
Post #979499 24th Jan 2023 12:19am
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Chicken Drumstick



Member Since: 17 Aug 2020
Location: Near MK
Posts: 126

United Kingdom 
Eh?
Post #979509 24th Jan 2023 8:41am
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2225

Scotland 
I can only assume he is talking about the transfer box. Which is odd as it’s generally held to be the most robust bit of transmission that LR ever made.
Post #979511 24th Jan 2023 9:00am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2066

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Post #979516 24th Jan 2023 9:38am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2477

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Re: CDL.
portal pat wrote:
Just an observation. Wished I'd known earlier how inadequate the factory TD5 CDL is. Been steadily modding my 2001 110 and have gone through 2 of these units now. Have now fitted an Ashcroft unit which will hopefully take the power and extra load better. Everything else is upgraded without issue.



what now?

I don't think I've ever hard of a CDL failing on a Defender, UNLESS there was PEBKAC involved Whistle --
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
Post #979517 24th Jan 2023 9:46am
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portal pat



Member Since: 05 Jan 2015
Location: South. Very south.
Posts: 32

Australia 2001 Defender 110 Td5 SW Fuji White
Yes, I am talking about the centre diff. lock. Probably OK with everything stock, but inadequate with much increased torque loads. Nothing suggests poor workmanship like wrinkles in the duct tape.
Post #979529 24th Jan 2023 11:16am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2477

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
I highly doubt that, I've been running BAS remap on mine since 2010 and done loads of off-roading since then with zero issues.

We did a 5-week trip in Namibia a while ago where the CDL stayed locked for +-4 weeks on all sorts of gravel roads.

I call PEBKAC --
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
Post #979531 24th Jan 2023 11:24am
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2066

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
The two piece cross pins break don't they where they cross one another as they half diameter at that point. Ashcroft do a one piece HD upgraded cross pin https://ashcroft-transmissions.co.uk/product/hd-cross-pin/

The planet gears friction weld themselves to the crosspin too where the open diff is subject to wheelspin. > 110 XS Double Cab
> Instagram @simonlanemind
Post #979532 24th Jan 2023 11:47am
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Chicken Drumstick



Member Since: 17 Aug 2020
Location: Near MK
Posts: 126

United Kingdom 
portal pat wrote:
Yes, I am talking about the centre diff. lock. Probably OK with everything stock, but inadequate with much increased torque loads.

The linkage, locking mechanism or the actual diff?

The LT230 is generally quite proven, many have been used completely standard pushing 450+bhp in racing environments.

If you don't lock the centre diff and constantly spin the open diff with high load differentials, e.g. on slippery surfaces such as sand and things. Then yes, you can break/wear them. But that is more abuse than anything. With the diff in the locked position they should be fine for this kind of use.
Post #979546 24th Jan 2023 12:59pm
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geobloke



Member Since: 06 Nov 2012
Location: North Wales, UK
Posts: 2952

United Kingdom 
hank wrote:
The two piece cross pins break don't they where they cross one another as they half diameter at that point. Ashcroft do a one piece HD upgraded cross pin https://ashcroft-transmissions.co.uk/product/hd-cross-pin/

The planet gears friction weld themselves to the crosspin too where the open diff is subject to wheelspin.


Those are the weak points, along with the intermediate gear shaft which can stretch the holes in the casing. Hence the frequent leaks from that region.

But apart from those the LT230 is a great gearbox Thumbs Up
Post #979550 24th Jan 2023 1:09pm
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portal pat



Member Since: 05 Jan 2015
Location: South. Very south.
Posts: 32

Australia 2001 Defender 110 Td5 SW Fuji White
Chicken Drumstick wrote:
portal pat wrote:
Yes, I am talking about the centre diff. lock. Probably OK with everything stock, but inadequate with much increased torque loads.

The linkage, locking mechanism or the actual diff?

The LT230 is generally quite proven, many have been used completely standard pushing 450+bhp in racing environments.

If you don't lock the centre diff and constantly spin the open diff with high load differentials, e.g. on slippery surfaces such as sand and things. Then yes, you can break/wear them. But that is more abuse than anything. With the diff in the locked position they should be fine for this kind of use.


No issues with the transfer case. Always lock the CDL when necessary, but on ashphalt and dirt roads 200 HP, 35s and lockers take a toll! Thrust washers shredded etc. Nothing suggests poor workmanship like wrinkles in the duct tape.
Post #979666 24th Jan 2023 11:52pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 15306

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
So you're complaining about the centre diff itself, not the centre diff lock as per the thread title. No wonder there has been confusion!

The diffs fail quickly if wheels are spun unlocked, they're tough as hell when locked. Best bet is to fit an Ashcroft ATB centre diff.

The last LR centre diffs with the value-engineered centre are horrible and should be avoided!
Post #979677 25th Jan 2023 7:38am
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portal pat



Member Since: 05 Jan 2015
Location: South. Very south.
Posts: 32

Australia 2001 Defender 110 Td5 SW Fuji White
Sorry. Out here we call it a centre diff lock unit. Agree, it works well locked, just unsatisfactory when open and trying to handle bulk torque. Nothing suggests poor workmanship like wrinkles in the duct tape.
Post #979721 25th Jan 2023 11:52am
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