 | Home > Maintenance & Modifications > Td5 auto |
 
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| ibexman Member Since: 13 Dec 2008 Location: Essex Posts: 2945  
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Ashcroft do a kit give them a call
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3rd Jan 2014 5:32am |
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| 993porky Member Since: 01 May 2011 Location: sunderland Posts: 171 
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Cheers for reply Ibexman but Ashcroft charge best part of a £1000 for compushift that's what I was trying to avoid like the bloke has done in the to videos it can be done,but how?
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3rd Jan 2014 8:29am |
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| ibexman Member Since: 13 Dec 2008 Location: Essex Posts: 2945
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I don't think you will be satisfied with the stock gear changes I drove one a while back and it was awful, at least with compushift you can tailor the autobox when you want it to change . iwould drive a couple of cars first
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5th Jan 2014 5:42am |
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| Pam W Member Since: 25 Oct 2011 Location: North Yorkshire Posts: 1169  
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I'd agree with Ibexman. Have a compushift on mine and we tweaked the ratios several times before finding the sweet spot. When we then added roll-cage, winch and a lift we tweaked it again to compensate for the the extra weight and handling differences. More recently I had a problem where it wouldn't accelerate over 32mph, plugged in the compushift box and diagnosed it was thinking it was in low box - due to a trapped wire as it turned out.
If you can stretch to it financially, do it all first time round, and include the Compushift. If you want any help with it have a chat to Patrick Smart at Maddison4x4 in Thirsk (not as far for you to travel as Ashcrofts!!). Patrick was the person who first imported and developed the Compushift stuff in the UK for use with Land Rover , before it passed to Ashcrofts, so knows his stuff. (In fact I got mine from Pat as he had one last one gathering dust on the shelf! ) Our blog - http://landytravels.com/ Yorkshire Off Road Club - http://www.yorkshireoffroadclub.net |
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5th Jan 2014 12:50pm |
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| 993porky Member Since: 01 May 2011 Location: sunderland Posts: 171
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Pam W
Thanks for advice,so I'm I right in thinking if I've already got my td5 auto box then all I need is the compushift ? Also once set up is the compushift unplugged and basically put in the cupboard until any tech probs ? If so a much better option as it could be used in the conversion of several auto conversions |
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5th Jan 2014 4:37pm |
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| ibexman Member Since: 13 Dec 2008 Location: Essex Posts: 2945
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I think it's a permanent. Install
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5th Jan 2014 4:43pm |
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| davew Member Since: 02 Jan 2012 Location: North Yorkshire Posts: 888 
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The Compushift ECU is permanently installed. Pam was referring to the display unit which is a separate module that you can plug into the compushift to make adjustments, for diagnostics or just so you can see what's going on as it tells you all sorts of bits of info including RPM, MPH, what gear you are in, throttle position and so on.
Potentially there is a cheaper option than the Compushift but it's still very much "bleeding edge" and will take a fair bit of experimentation to get it right. It is a spin off of the MegaSquirt open source hardware and software project called MegaShift that will control the ZF auto and can be adjusted using a PC. Hardware cost is less than £200 but you'll need to put a lot of time into it and not be scared of the technical aspects. The finished item should be better than the Compushift though. I intend to build a couple to replace the Compushifts in our vehicles at some point in the next year or so. It's been used successfully with the main GM autos but as far as I know it's use with a ZF has yet to be documented - if it's not done before I do mine then I will document it so it will become easier for others. You can use the Discovery loom and ECU but you can't compensate for the different gearing and driving style of the Defender and you end up with something that works after a fashion but doesn't give the best drive. It can also be a bit of a challenge to get it working in the first place ! http://www.yorkshireoffroadclub.net/ |
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5th Jan 2014 5:24pm |
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| 993porky Member Since: 01 May 2011 Location: sunderland Posts: 171
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davew
Thanks information would appreciate any more info you have regarding Megashift,who deals in them etc. Also keep it posted if you do get round to doing it as I fir one would be very interested in it
Like compushift idea but it's £1000'whats a bit off putting  I suppose if I drove one then maybe I'd be more convinced,would I be wrong to expect defender td5 auto to drive (gear changes I mean)like a discovery td5 auto which I did own for several years.
Cheers Paul |
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5th Jan 2014 6:44pm |
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| 993porky Member Since: 01 May 2011 Location: sunderland Posts: 171
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ibexman What did you drive with "stock gear changes" was It a td5 defender if so how would that be done with out compushift ? Would it have been someone's own DIY job like the YouTube links I posted earlier? Cheers Paul |
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5th Jan 2014 6:48pm |
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| ibexman Member Since: 13 Dec 2008 Location: Essex Posts: 2945
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I drove a part ex td5 which was for sale around a year ago from my local land rover dealer , it was an awful drive taking too long to change up too much over revving , think it was a JE conversion it was set up all wrong Do it right with Compushift cheers Chris
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5th Jan 2014 8:14pm |
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| 993porky Member Since: 01 May 2011 Location: sunderland Posts: 171
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ibexman
Thanks for insight,appreciated |
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5th Jan 2014 8:50pm |
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| davew Member Since: 02 Jan 2012 Location: North Yorkshire Posts: 888
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There's some info on it here... http://www.msgpio.com/manuals/mshift/4L60e.html Bear in mind this is not "plug and play" for the ZF but will need a lot of research and trial and error to get it working although there are a growing number of people working on the project to get it working with ZF boxes. If you want something that you just connect up and it will run, Compushift is still your best bet at the moment. MegaSquirt used to be very similar, getting a Rover V8 running with it 10 years ago was a real challenge as you had to do everything yourself but nowadays a lot of people fit them with no or little knowledge of what they are doing. MegaShift will almost certainly be the same in the next couple of years. The reason a Discovery setup will not work properly on a Defender falls into 3 main areas: 1) Final transmission gear ratios are different, a Discovery runs on smaller wheels than a Defender and even the different transfer box ratio doesn't cancel that out. As a result the Defender needs to change gear at different points to optimise the gear changes. 2) The Discovery is far more aerodynamically efficient than the Defender and the increased drag of the defender over 40MPH again means that the gearbox has to change up later to avoid bogging the engine down below the turbo boost level. 3) The Discovery TD5 has a different engine fuelling map which gives it more power and a different drive characteristic, in part to allow for the above 2 items. With a manual box you can get away with different gear ratios simply by changing the points at which you shift. With an auto box having a box that changes gear or locks up at the wrong time can make the vehicle really painful to drive. Auto boxes are also far more sensitive to "bad" final drive ratios, such as running 32 inch + tyres with a 1.2 transfer box. With Compushift or other controllers that allow you to modify the shift points you can adapt the auto shifts in the same way as you would for a manual. http://www.yorkshireoffroadclub.net/ |
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6th Jan 2014 12:11am |
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| Mdm Member Since: 11 Sep 2013 Location: Sunny Lancashire Posts: 1594
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We use an Ashcroft auto box built to take both the power and torque of a tuned td5 and it's use in competitions.ratios and spec to suit the car and it's intended use.
Dead reliable I've also done a fair few miles in a road going version of the above. Correct cooling is critical as is tyres size. Both had manual valve bodies and drove as expected. The compushift one I drove was a lot better. A standard disco set up will not last long in a 90 I'm afraid |
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6th Jan 2014 8:06pm |
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| 993porky Member Since: 01 May 2011 Location: sunderland Posts: 171
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Thanks everyone for replies I think my best bet is probably the compushift,sounds good if set up properly
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6th Jan 2014 9:50pm |
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