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| dnorrishill Member Since: 15 Jul 2011 Location: Hampshire Posts: 612   
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Hi the standard defender box is a 1.4 ratio and there is a label on them to indicate this. I also believe you can use the serial number to workout the gearing.
One thought though - as far as I am aware the transfer box ratios only really effect your take off in first gear and top end. If you are finding you have to change down going up hill, this won't necessarily improve with different ratios. In fact the only negative I have ever heard is that it can be difficult to get away at the lights if you are towing heavy loads with a 1.2 transfer box (and a TDI or non remapped TD5). Let's face it there are/were thousands of 200tdi discos out there that were OK? Are you sure there is not an issue with your engine being down on power? |
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2nd Mar 2014 3:33pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240  
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A Disco transfer box will affect all high range ratios.
Discoverys were fitted with smaller tyres than Defenders to offset the higher gearing. They're also significantly more aerodynamic, which makes a big difference above 50mph or so. Darren 110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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2nd Mar 2014 3:40pm |
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| WelshGas Member Since: 01 Oct 2010 Location: Vale of Glamorgan Posts: 935  
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Are you absolutely sure the engine is running as well as it can? I would suggest checking it out, preferably on a rolling road before changing the drive train ratios. Changing the transfer box ratios is normally done to produce a higher top speed or lower revs for a set speed. It has no effect on engine power output and it would seem in your case either the engine is down on power or the vehicle is overloaded.
 LANDYWATCH
Neighbourhood Watch for Land Rover Owners http://www.landywatch.co.uk/smf2/index.php |
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2nd Mar 2014 4:15pm |
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| big steve Member Since: 24 Dec 2009 Location: hertfordshire Posts: 2456 
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You can get 1.1 1.2 1.4 1.6
Td5 defender run 1.4 standard all pumas run 1.2 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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2nd Mar 2014 4:18pm |
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| dnorrishill Member Since: 15 Jul 2011 Location: Hampshire Posts: 612
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Good point on the disco forgot about wheel sizes...
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2nd Mar 2014 7:25pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5746 
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What is standard Disco tyres? 205/16 or 235 / 16 ? 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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2nd Mar 2014 7:53pm |
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| LandRoverAnorak Member Since: 17 Jul 2011 Location: Surrey Posts: 11240
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Yes to both, depending year / spec. 235's will have a 70 aspect ratio, which is essentialy the same diameter as 205's. Darren
110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak "You came in that thing? You're braver than I thought!" - Princess Leia |
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2nd Mar 2014 8:13pm |
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| sas pinkie Member Since: 14 Feb 2014 Location: Suffolk Posts: 26 |
well if the 110 is overloaded best have a word with land rover special vehicles, they specced and built it. it is currently unloaded and standard camel spec with the addition of a roof tent.
the 110 goes well once on the flat, had it above legal speed, but as soon as a slight incline is reached it just drops off. for this reason I believe the ratio is too high. so a 200tdi has a 1.4 ratio transfer box? is this different to the earlier 2.5 diesel and turbo diesel? does a 90 have a different ratio to a 110? |
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2nd Mar 2014 8:43pm |
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| Lou Sparts Member Since: 15 Apr 2012 Location: Kent Posts: 1501 
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I,ve owned 3 90,s all have had the 1.4 transfer box 1st was a Td, 2nd a 300Tdi,3rd a Td5.
I believe the N/A diesel had the 1.6 box, Once knew a chap who put a 1.2 box in a N/A diesel 110 rendering 5th gear to downhill use only ! 2005 Td5 90 XS Steve |
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2nd Mar 2014 8:51pm |
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| cornish rattler Member Since: 31 Aug 2013 Location: Manchester Posts: 642 
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Could be more of a turbo problem or engine problem
 Graham
1988 Defender 90 county 200tdi ( Beast ) Paul Walker 1973-2013 ( I Almost Had You ) |
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2nd Mar 2014 9:55pm |
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| Anderzander Member Since: 08 Feb 2011 Location: Lancashire Posts: 999
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I think you want the 1.4
A 200tdi doesn't really have the poke to pull a disco box. A friend is taking one out of his 90, to go back to the standard 1.4, for the same reasons. |
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2nd Mar 2014 10:35pm |
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