 | Home > Td5 > Has anyone fitted a 6 speed box to a td5 engine |
 
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5849   
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I think Ashcrofts were, at some point looking at a Puma 6 speed to TD5 conversion. Not sure if it ever happened. Maybe worth giving them a buzz? 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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26th Nov 2013 4:19pm |
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| Defender_mad1990 Member Since: 14 Oct 2013 Location: Tipton Posts: 4  
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Will give them a bell tomorrow mate
Cheers phil |
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26th Nov 2013 5:18pm |
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| diesel_jim Member Since: 13 Oct 2008 Location: hiding Posts: 6093 
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Failing that, unless it's already got one, a 1.2:1 transfer box will increase the leg length a bit.
I've got one in my (Td5) 110, made a huge difference. |
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26th Nov 2013 6:53pm |
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| epictrail Member Since: 20 Sep 2013 Location: High Wycombe Posts: 395 
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Which vehicle is that transfer box if that from?
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26th Nov 2013 7:30pm |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015  
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Or go for a Ashcroft transmissions 1:1 Transfer box?
Glyn   |
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26th Nov 2013 7:32pm |
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| dnorrishill Member Since: 15 Jul 2011 Location: Hampshire Posts: 615 
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Generally speaking the preferred option to improve a TD5's road performance is to fit the 1.2 transfer box and get a decent engine map.
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26th Nov 2013 7:33pm |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015
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I agree with the 1.2 box- but depends on what your desired choice in tyre size is. Anything less than 33s (265/75/16) and you will still be sat at 2500-2600rpm at 70. Going from my Puma Defender to the gf's Discovery Td5 I feel like I am revving the t***s off it when on the motorway at 65mph.
1.2 box is so popular because there are hundreds of them floating around from broken Discoverys (normally fetch about £100) where the 1:1 box will need to be bought from somewhere like Ashcrofts (£550). Handy link from the Ashcroft site: http://www.ashcroft-transmissions.co.uk/calc/ratio_calc.html. Glyn |
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26th Nov 2013 7:44pm |
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| epictrail Member Since: 20 Sep 2013 Location: High Wycombe Posts: 395
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How difficult is it to swap the box's?
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26th Nov 2013 8:11pm |
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| Glynparry25 Member Since: 16 Feb 2009 Location: Miserable Midlands Posts: 3015
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Couple of hours work..... just need to disconnect drive shafts, disconnect linkage unbolt from the gearbox and then do the same in reverse to fit
Glyn |
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26th Nov 2013 8:18pm |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4785 
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I believe that the 6 speed MT85 out of Aston martins/corvettes etc can be made to fit, read somewhere that a guy in America fitted one to a range rover classic so, similar transfer box with an adaptor plate?
 2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton Last edited by grafty99 on 26th Nov 2013 9:14pm. Edited 1 time in total |
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26th Nov 2013 8:40pm |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4785
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just looked and used the Ashcroft ratio calculator the MT85 only drops the 70mph RPM by ~ 100RPM 2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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26th Nov 2013 8:49pm |
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| achuakh Member Since: 12 Apr 2012 Location: Singapore Posts: 158  
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yeah, a 1.2 box is the way to go.
It's really a fuel saver and ear saver on a long trip. epsecially when you are doing 110 to 120km/h, you'll appreciate it. the lt230 is the same fitting, so you don't need to worry about it not matching. so it's a 1.41 box out drop it and drop in the 1.222 and you're done. it's purely a mechanical exercise, physically. do bear in mind, if you had cruise control via the ecu, it will now only work in gear 4. so a 'speedo healer' can be fitted or you can get a cruise control kit. pulling away in gear 2 might not be so easy now, if you are used to that. but anything on a slight decline slope, you'll pull away great in 2 and make good acceleration. From the land of the most expensive land rover defenders on planet earth. At �125k for a XS 110 csw and you get to own it only for 10yrs! Please find me a good reason to stay on this island. |
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27th Nov 2013 7:07am |
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| m_plewes Member Since: 17 Feb 2011 Location: Thirsk Posts: 11
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That's because the 6speed box is fitted with the 1.2 transfer box. Just fitting the 6 speed box with 1.4 transfer box would make hardly any difference. The gain from the 6 speed is still having a low 1st gear. 1.2 transfer box on a tdi or td5 isn't great for setting off fully laden or towing. |
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27th Nov 2013 2:24pm |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4785
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I believe the MT85 is different to the MT82 fitted to the puma
2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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28th Nov 2013 12:13am |
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