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jeffersj



Member Since: 23 Jan 2015
Location: Near Preston
Posts: 431

United Kingdom 1996 Defender 90 300 Tdi HT Bronze Green
Not sure, previous owner rebuilt the Defender using Disco1 engine and axes etc but receipts show Td5 transfer box so it may be the same as the Disco box. Jeff
Ex 1968 Series 2A
Ex 90 TD5
Ex D3
Ex D4
Post #604101 23rd Feb 2017 8:12am
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pj2106



Member Since: 20 Dec 2012
Location: Huntingdon AKA The Shire
Posts: 1500

United Kingdom 2008 Defender 110 Puma 2.4 USW Stornoway Grey
Worth considering Syncro Gearboxes as they offer this too and can rebuild with a higher strength I ternals 2008 110 2.4 XS Utility (Hagrid)
2002 90 TD5 Hardtop (Sully) Sold
1998 300TDi D1 (Billy) Sold
Post #604121 23rd Feb 2017 9:32am
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ibexman



Member Since: 13 Dec 2008
Location: kent
Posts: 2871

United Kingdom 
Ashcroft can also build a bullet proof box
Post #604136 23rd Feb 2017 10:38am
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Boost



Member Since: 17 Oct 2014
Location: Gloucestershire
Posts: 198

United Kingdom 1986 Defender 90 200 Tdi SW Arles Blue
I've read a few things saying the higher 5th gear upgrade combined with a 1.2 Disco transfer box makes for awkwardly high gearing.

I've a slightly modified tdi, 140-50hp at a guess, Looking at either Ashcroft or Syncro for a recon 'box.

Would love to have a really tall 5th gear for the motorways Thumbs Up
Post #608433 10th Mar 2017 5:58pm
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MJN110



Member Since: 18 May 2015
Location: North Yorkshire
Posts: 380

United Kingdom 2016 Defender 90 Puma 2.2 Landmark LE Montalcino Red
Hi
I am beginning to think I may keep the standard gearbox ratios but opt for the uprated bearings.
At the same time fit a recon 1.2 transfer box.
Has anybody done this on a 300tdi and are happy with it?
Post #608517 10th Mar 2017 11:59pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4348

United Kingdom 
Hi MJN... This is exactly what I did. Working well so far.
Post #608884 12th Mar 2017 3:40pm
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MJN110



Member Since: 18 May 2015
Location: North Yorkshire
Posts: 380

United Kingdom 2016 Defender 90 Puma 2.2 Landmark LE Montalcino Red
Hi Geobloke

Thanks for your response

is your engine standard and do you have a 90 or 110 ?
Post #609860 16th Mar 2017 3:13pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4348

United Kingdom 
At the moment my engine is quite poorly on account of A) head gasket failure or B) water pump failure... I am very much hoping for the latter. But yes my engine is not entirely standard a TD5 with a remap, egr delete, full size intercooler, hoses, standard turbo (but new) and an uprated exhaust manifold. When she was working (last Sunday) she was absolutley superb and will be again once this little issue has been resolved... I have a 110 CSW, full roll cage, winch out front, a Disco transfer box and standard sized wheels and tyres.

Love her to bits. Which ironically she is her current state Rolling Eyes Whistle
Post #609876 16th Mar 2017 5:29pm
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MuddyChris300tdi



Member Since: 02 Mar 2014
Location: Derby
Posts: 224

United Kingdom 1995 Defender 130 300 Tdi HCPU Alpine White
I've got the v8 fifth gear in my 300tdi 130 with a 1.2 tbox and rolling on 33.12.50.15's. I like it and would advise anyone getting a new box build for a defender to get it fitted. But would think about what sort of driving you do in your defender before fitting a 1.2 transfer box.
Post #615501 9th Apr 2017 10:53am
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MJN110



Member Since: 18 May 2015
Location: North Yorkshire
Posts: 380

United Kingdom 2016 Defender 90 Puma 2.2 Landmark LE Montalcino Red
Hi Muddychris
what a combination I didnt think a v8 fifth gear and a 1.2 transfer box would work on a 130 with its extra weight, I think my 90 will have no problem at all with a standard gearbox and a 1.2 transfer box now.
Is you engine heavily modified?
Post #615791 10th Apr 2017 2:01pm
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MuddyChris300tdi



Member Since: 02 Mar 2014
Location: Derby
Posts: 224

United Kingdom 1995 Defender 130 300 Tdi HCPU Alpine White
it came with a Allisport full size intercooler but I don't know if the fuel had been turned up. It doesn't really smoke. I've got it up for sale but if your anywhere near Derby before it sells your than welcome to have a drive.
Post #615832 10th Apr 2017 5:43pm
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MJN110



Member Since: 18 May 2015
Location: North Yorkshire
Posts: 380

United Kingdom 2016 Defender 90 Puma 2.2 Landmark LE Montalcino Red
I think if somebody has gone to the expense of fitting an allisport intercooler they will have upped the fuel delivery.
So I have still not heard from anybody with a standard 300tdi motor!!
Post #615961 11th Apr 2017 7:01am
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BuckBlu110



Member Since: 19 Apr 2014
Location: in the pub
Posts: 709

United Kingdom 1994 Defender 110 BMW M57 3.0 Diesel CSW Buckingham Blue
I too would be interested in hearing from someone with a standard 300 with the 1.2 box. I've been pondering about this for a while now, I do a fair bit of motorway driving up and down the country, so the quieter ride would make life more pleasant, trouble is I do nearly as much towing as I do motorway work, sometimes bob at the same time, and from what I understand, standard 300s don't like towing with the 1.2 box very much, so in this case would the upgraded intercooler and fueling solve this? Could do with someone who had a standard 300 and fitted both mods to come along and enlighten us.
Post #615968 11th Apr 2017 7:57am
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2062

United Kingdom 1984 Defender 90 200 Tdi HT Pennine Grey
I've had a standard tdi with a 1.2 transfer box on my 90 and I hated it. It's fine on the motorway but anywhere else the gear ratios are all wrong with second and third particularly in the wrong place with regards to speed and being on turbo.
If you do nothing but motorway miles buy a euro box, it'll pay for itself quite quickly compared to your defender.
If you drive round town and country roads you'll hate what it does to the drivability of your Defender.
Thus my advice is leave 1.2 transfer boxes attached to the shopping trollies they came from 😊
Mo The Land Rover 90 - Many are called, few are chosen.
Post #615987 11th Apr 2017 9:57am
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MJN110



Member Since: 18 May 2015
Location: North Yorkshire
Posts: 380

United Kingdom 2016 Defender 90 Puma 2.2 Landmark LE Montalcino Red
Thanks for the latest opinions.
So if it is felt that the 1.2 transfer box is not a good option and the ratios were wrong what was the Discovery 300tdi like to drive and tow with?
I would imagine the Discovery 300tdi would be considerably heavier than a Defender as well or am I missing something here?
Post #616350 12th Apr 2017 4:25pm
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