 | Home > Maintenance & Modifications > 3 LSDs |
 
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| ChrisWoods Member Since: 29 Dec 2016 Location: Spreyton Posts: 164   
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Does anyone on the forum have three LSDs installed, ie. Front rear and centre. I'm considering this setup instead of air lockers. Would be pretty much the same as quattro/4motion.
Traction control would also help it out if you got a wheel hanging. 2009 2.4TDCi XS Utility Wagon. |
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4th May 2017 8:26pm |
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| Kit Member Since: 12 Feb 2016 Location: Shropshire Posts: 1110 
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Why do you want a center LSD? 1993 200 Tdi 90 CSW
1956 Series 1 Hard-top 1958 Series 1 Soft-top |
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4th May 2017 8:32pm |
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| ChrisWoods Member Since: 29 Dec 2016 Location: Spreyton Posts: 164
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The centre diff in an LT230 box has a weak differential. Locked it can actually make you break traction by forcing both axles to go the same speed. But a 60/40 split let's the wheels track with no slip. 2009 2.4TDCi XS Utility Wagon.
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4th May 2017 8:48pm |
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| ChrisWoods Member Since: 29 Dec 2016 Location: Spreyton Posts: 164
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I would too. I think the traction control is a bit aggressive, shock loading all the small gears in the diff. I'm hoping it should hardly kick in once the diff's are done.
Wait for someone with this setup to speak up. 2009 2.4TDCi XS Utility Wagon. |
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5th May 2017 6:10am |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6301  
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Hope to have centre and rear fitted within a few weeks from now.
Will be happy to let you know I get on. I believe hope the centre not only being stronger also helps reduce overall slack in the transmission. Here's to hoping to having a nice transmission (new gearbox, transferbox and rear diff) 
Just need to get started on sorting all the rust out 
Lastest version of Oxford dictionary has 'Defender' in there defined as 'on going engineering project' (?). |
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5th May 2017 6:17am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17453 
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What do you want to know?
I don't have TC on my Defender (thank goodness, one less thing to go wrong!) but find that the ATB set-up works extremely well. Left foot braking will sort you out in the event that you have a wheel with negligible traction (TC will do this for you if you have it). I have had my 110 stalled at tickover on a steep grassy slope with all four four wheels rotating at exactly the same speed, which is quite impressive with unlocked diffs and a good demonstration of ATBs at work. |
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5th May 2017 7:57am |
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| ChrisWoods Member Since: 29 Dec 2016 Location: Spreyton Posts: 164
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Sounds good! Did you find the atbs got rid of any slop in the driveline? They still tight as they were when I fitted them? 2009 2.4TDCi XS Utility Wagon.
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5th May 2017 8:13am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17453
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When I fitted the ATBs I also fitted HD halfshafts, drive flanges, and CV joints, and there was an immediate and very significant reduction in driveline slop. It is, of course, not really possible to say which of the old components were "sloppy". The rear diff seemed OK, the front diff had disintegrated and was scrap, and I replaced the transfer box due to the whining noise from the old one. I suspect that the biggest single source of slop generally is the halfshaft/drvieflange interface, and it has to be said that now, probably some 100,000 miles after fitting this lot, the slop is back, although perhaps not surprising after this mileage.
Actually it is also worth noting that the Ashcroft shafts and flanges have lasted as long now as the last three sets of genuine LR shafts and flanges did. At some stage this year I will need to replace the clutch (it's getting rattley again - it's been in for about 60k miles now so not surprising) and I will probably "refresh" the driveline at the same time. It is quite likely that a significant amount of the current slop is coming from the clutch drive plate itself. I have found that the slop issue is seldom one single worn part, rather the result of an agglomeration of wear throughout the driveline. It is highly likely that when I next need to replace the rear axle halfshafts and flanges I will try a set of the one-piece shafts fitted as OE to the last Defenders. I have no particular concerns about the diffs themselves, and they certainly seem to be lasting better than the originals. |
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5th May 2017 9:20am |
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| JOW240725 Member Since: 04 May 2015 Location: Suffolk Posts: 7907 
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Might be of interest if you haven't seen, last pages mention central lsd. http://www.defender2.net/forum/topic13545.html James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641 MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557 Instagram @suffolk_rovers |
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5th May 2017 2:07pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2183 
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Might sound a bit stupid, but I was put off the idea of a central LSD as if for any reason a wheel bearing, drive shaft or flange fails you may well just keep going without knowing anything has broken! Potentially doing more damage along the way
You can get an HD cross pin that lowers the risk of breaking the CDL |
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8th May 2017 1:49pm |
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| diduan Member Since: 13 Oct 2016 Location: Central Balkan Posts: 260 
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Be aware that if your central differential is LSD, your vehicle can not be brake tested on rollers with a LSD in the front or rear differential. This is an issue where i live. Defender 110 SW MY2011 2.4tdci decat, no EGR
Jeep Wrangler YJ 1990 4.0. Front 78' Dana 60, Rear CUCV 14 bolt Last edited by diduan on 8th May 2017 3:01pm. Edited 1 time in total |
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8th May 2017 2:59pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17453
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Why do you think that?
If a wheelbearing fails, you know when you shoot across or off the road, and there'll be no difference whtever kind of diff or diffs you have. If a halfshaft or flange fails, you'll know because the diffs are torque-biasing not full lockers so you'll lose drive, just as you do with an open diff. Fitting an ATB in the centre is, I agree, more a matter of preference than necessity, since used correctly (which so many are not) the standard centre diff is on the whole entirely adequate. It remains, however, an item prone to wear and a significant contributor to driveline backlash and poor drivability issues. Upgrading the crosspin assembly doesn't cure this, it still wears. The attraction, to me at any rate, of the ATB upgrade is that the diff itself appears to be a stronger and more durable unit, especially for a TDCi-engined vehicle which is known to be a bit of a transmission-eater. |
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8th May 2017 3:01pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17453
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I would not allow the tester to attempt to test any LT230-fitted vehicle of mine on rollers. Fortunately my local MOT test station doesn't anyway. |
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8th May 2017 3:02pm |
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| bankz5152 Member Since: 02 Feb 2017 Location: South London/North Kent Posts: 2183
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 Thanks for clearing that up, was just a quick thought. I had a drive shaft sheer and wheel bearing fail while doing 60 on the A2, nothing but a small pop then loss of drive and poor braking. Which made me think, if I had LSDs I would have though they would lock up to a degree and keep drive. I guess not!
I'll reconsider one after this haha |
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8th May 2017 3:18pm |
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