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| big steve Member Since: 24 Dec 2009 Location: hertfordshire Posts: 2456   
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im pretty sure only some 110s and 130s had the 1.6 box ?
steve 2015 2.2 tdci hardtop xs 3.2 conversion DONE 238bhp and 707nm torque and thats just the start ;-P hybrid turbo in build -done ready to fit ashcroft atb in transfer box 6 speed auto in build |
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12th Aug 2014 12:33am |
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| cornish rattler Member Since: 31 Aug 2013 Location: Manchester Posts: 642 
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Just googled land rover 90 transfer box's and it came up with the differences of transfer box's used from early 90/110's to late td5's and it looks like all early 4 cyl none TDI used the 1:1.6 transfer box which answer's my question so not entirely sure wether to go for a 1:1.4 or a 1:1.2 discovery transfer box
 Graham
1988 Defender 90 county 200tdi ( Beast ) Paul Walker 1973-2013 ( I Almost Had You ) |
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12th Aug 2014 9:16am |
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| Nidge Member Since: 27 Jan 2008 Location: Kildare Ireland Posts: 810  
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Graham you can tell from the serial number which ratio you have...check out ashcroft site for number location and specs.
http://www.ashcroft-transmissions.co.uk/in...oductId=45 As for which ratio to run...will pend on tyre size too... a tdi is likely to struggle with 1.2 disco box and say 285 tyres. N. |
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12th Aug 2014 10:38am |
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| cornish rattler Member Since: 31 Aug 2013 Location: Manchester Posts: 642
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Ok cheer's nidge but would it be ok with 265 tyres which i have
 Graham
1988 Defender 90 county 200tdi ( Beast ) Paul Walker 1973-2013 ( I Almost Had You ) |
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13th Aug 2014 8:33am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5425 
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You will know if you have a 1.6 box as at 60 mph it's screaming. Not a standard fit for yours. 265 and a 1.2 box depends on a few things. If you tow don't do it, if you have played or are willing to play with pump, and possibly bigger intercooler it will be ok. Got to question miles you drive, quality of existing box, cost of replacement box. It won't save you any money fuel economy wise.
Andy |
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13th Aug 2014 8:40am |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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If the box is in good shape I would go for bigger tires.
 Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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13th Aug 2014 8:58am |
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| Nidge Member Since: 27 Jan 2008 Location: Kildare Ireland Posts: 810
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^^^^
As Andy says, 265s with bigger intercooler and pump tweak, will sit nicely at motorway speeds.... Maybe nicely is the wrong word, as it is a 200tdi after all.. 
N. |
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13th Aug 2014 9:01am |
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| Lou Sparts Member Since: 15 Apr 2012 Location: Kent Posts: 1501 
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There should be a sticker on your transfer box with the ratio on it, it's my understanding that the 1.4/1 transfer box was used from the Turbo Diesel onwards, 1.6/1 was used on normally aspirated defenders prior to that. 2005 Td5 90 XS
Steve |
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13th Aug 2014 7:29pm |
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| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3346 
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I think the word you are looking for is Agreeably. I have a standard 1:4 box and 265/75/16 and I usually cruise quite happily between 50 and 60 on motorways. I anything over 60 and the noise and MPG is awful, at the moment I'm returning around 33-34MPG. Cornish, if you look on the back of your T'box next to the handbrake drum there should be a sticker which will show if you have a 1:6 or 1:4 ratio box. Personally, with your tyres I wouldn't want to go faster than 50mph anyway due to the noise and the grip on road. Remember, its not how fast you can go, its how fast you can stop! |
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13th Aug 2014 8:02pm |
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| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3346
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Looks like this
 Click image to enlarge |
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13th Aug 2014 8:10pm |
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| cornish rattler Member Since: 31 Aug 2013 Location: Manchester Posts: 642
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Right ok shaggy looking at your pic i can defo say i don't have that sticker on mine so if the weather is ok tomorrow i may go and have a look at the serial number on the transfer box and see if i can work out which one i have
Graham
1988 Defender 90 county 200tdi ( Beast ) Paul Walker 1973-2013 ( I Almost Had You ) |
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13th Aug 2014 11:47pm |
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| cornish rattler Member Since: 31 Aug 2013 Location: Manchester Posts: 642
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Right i have had a look under the landy for the serial number but couldn't find it so i will have another look on Saturday when i have more time
 Graham
1988 Defender 90 county 200tdi ( Beast ) Paul Walker 1973-2013 ( I Almost Had You ) |
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14th Aug 2014 10:52am |
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| cornish rattler Member Since: 31 Aug 2013 Location: Manchester Posts: 642
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Ok just googled it and found the s/n is right next to where the sticker should be so i was looking in the right place but after cleaning it down where the s/n should be stamped is just blank but as i say will have a better look on Saturday
Graham
1988 Defender 90 county 200tdi ( Beast ) Paul Walker 1973-2013 ( I Almost Had You ) |
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14th Aug 2014 11:00am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6486 
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You can see the end of the serial number in that photo above, just to right of bottom left, it ends 14D on that box.
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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14th Aug 2014 11:10am |
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