Vehicle & Technical > Defender
Ashcroft transmissions TD5 Gear upgrade
SteveG:
--- Quote from: "thermidorthelobster" ---
The Ashcroft upgrade only affects high ratio. If you changed the tyre size you'd lose your low gearing in low box as well. Which may or may not be important; a 10% change in gearing isn't going to make too much difference at the low end.
--- End quote ---
Running 255/85 16's and no noticeable hindrence in running larger tyres in low. The TD5's appear to have better engine breaking than the TDI's so hasn't been a problem for me. Having said that up until latest one experience has been in various V8 autos so it all seems slow to me now! :wink: :wink:
burgerman With 235/85 16's on you are running about 4% less gearing than me on 255/85 16's. With this tyre size you may find that fitting the Discovery gears upgarde you gear it up by too much. IIRC the upgarde is about 15% increase. Ring Dave at Ashcrofts and ask their opinion about tyre size etc. You'll get no <edit>stuff from rear end of cow<edit> from them.
Cheers
Steve
Mr Bump:
--- Quote from: "smo" ---I had it done on my 110, mainly because i wanted better cruising characteristics. The upgrade is great but dont expect it to be a world apart, its not a masssssive change but is worth it.
I did have an allisport intercooler and chip on mine as well tho :D
--- End quote ---
The cooler and chip aren't there any more and she's wearing 35's :wink: needs a bit more right boot when pulling away but haven't noticed any real increase in top speed - too noisy with the muds on lol
L90OOK:
I had the disco2 high ratio gears in my 90Td5 HT. I was also running 255/85x16 MT. The performance dropped of drastically with this setup & I was having to rev it harder & motorway speed was hard to get to & maintain due to the 15% or so increase in gearing, in high range.
However, I then fitted a Dastek chip, EGR removal & straight through mid exhaust, all supplied by Devon 4x4 & wow what a difference. The torque there from tickover right through the rev range, no turbo lag, the MPG was averaging 27-30 (I do have a heavy right foot :wink: ) & it sounded awesome 8)
I even managed to pull a rather heavy 101 off a dual carriage way with it, in an emergency!! :lol:
Is it worth the money...depends if you do allot of light right footed motorway driving so it pays for itself in increased MPG. Personally i'd go for a chip upgrade to increase the torque & bhp so you can change up a gear sooner & maintain speed when going uphills.
richo:
--- Quote from: "L90OOK" ---I had the disco2 high ratio gears in my 90Td5 HT. I was also running 255/85x16 MT. The performance dropped of drastically with this setup & I was having to rev it harder & motorway speed was hard to get to & maintain due to the 15% or so increase in gearing, in high range.
However, I then fitted a Dastek chip, EGR removal & straight through mid exhaust, all supplied by Devon 4x4 & wow what a difference. The torque there from tickover right through the rev range, no turbo lag, the MPG was averaging 27-30 (I do have a heavy right foot :wink: ) & it sounded awesome 8)
I even managed to pull a rather heavy 101 off a dual carriage way with it, in an emergency!! :lol:
Is it worth the money...depends if you do allot of light right footed motorway driving so it pays for itself in increased MPG. Personally i'd go for a chip upgrade to increase the torque & bhp so you can change up a gear sooner & maintain speed when going uphills.
--- End quote ---
What sort of money we looking at for this up grade mate as i would like it done to my 110csw td5
L90OOK:
The Datek chip, D44 EGR removal & straight through exhaust came to about £600...all fitted by myself easily in one day. From www.devon4x4.com
The high ratio gearing was about £600 fitted...sorry for being so vague but it was about 5 years ago I had it done & I have since sold the 90 along with the bills! ...I have just looked on Ashcroft Transmissions web site & they do the gearing upgrade for £646 fitted... http://www.ashcroft-transmissions.co.uk/part_34.html
Hope this helps.
Cheers
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