Rear axle drum to disc brake upgrade .
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Ian Maycock
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I did mine on my110 200tdi used the ' Diesel Jim method ' was pretty straight forward here's a link for the tech article http://forums.lr4x4.com/index.php?showtopic=11685
Marmaduke
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Just buy one from a scrap discovery with them already on as it's a straightforward swap just swap the drive flange from a three bolt to a four bolt one
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That's what I did, and it gives you time to check / replace bearings, seals etc. The hardest part was removing the disco flange (3 bolt) to 4 bolt. Mine was rusted on, and eventually had to be cut off with an angle grinder. Apparently most are easier than that.
Flossie
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Yep, last 2 posts are correct for a 90. A 110 shouldn't be fitted with a Disco rear axle but can be modified for discs or the whole axle replaced .
dod530d
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Marmaduke
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Can't remember years but search for '24 spline' or '300 tdi' your trailing arms are compatible so don't worry if they're not supplied when you buy one
Litch
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Don't limit yourself to an old Disco 1 axle as even the newest 300TDi one (the type you want) will be 18-years old so could be a worn out heap of rusty steel !
I bought a Disco one for my 1986 90 back in 2004 and after a tidy up (new stub-axles, bearings, discs, calipers, paint-job, fitting of the 24-spline diff & halfshafts out of my original axle) I bolted it on and had 11 years excellent service.
Fast forward to last year and it was starting to show its age (the pan was corroding through and it needed another paint-job) so rather than messing about I picked up a 2-year old TDCi rear axle and bolted that straight on (the only difference was that I needed different bushes for the lower shock mountings).
I bought a Disco one for my 1986 90 back in 2004 and after a tidy up (new stub-axles, bearings, discs, calipers, paint-job, fitting of the 24-spline diff & halfshafts out of my original axle) I bolted it on and had 11 years excellent service.
Fast forward to last year and it was starting to show its age (the pan was corroding through and it needed another paint-job) so rather than messing about I picked up a 2-year old TDCi rear axle and bolted that straight on (the only difference was that I needed different bushes for the lower shock mountings).
IamRobbie
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As above. Tdci will be more expensive but disco 300 tdi will have disc not sure about disco 200tdi however I think they came with disc but they are 10 spline. Newer will be 24 spline. I put one on mine a couple of weeks back. Pretty straight forward
cornish rattler
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That's what i did last year and never looked back, go for it 
