AuthorTopic: Ashcroft transmissions TD5 Gear upgrade  (Read 1587 times)

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Offline burgerman

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Ashcroft transmissions TD5 Gear upgrade
« on: April 28, 2007, 22:17:47 »
Howdy   Swmbo has a 2001 TD5 90 and is thinking of doing the ratio upgrade to "disco 2 " from ashcroft transmissions, From what i gather  we are pretty happy with there work, But was wondering if anyone has had this done and whats it like in the real world ??  Ie - - does it stilll pull ok, any mpg difference??      Mainly getting it for a more relaxed cruising revs, not overall speed

  Possibly got a european road trip coming soon (ish) so might make things a tad more "drivable"  Many thanks for any help
TD5 with a few Tweaks ;o)
a bit more fuel friendly than the V8

Offline smo

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« Reply #1 on: April 29, 2007, 08:15:14 »
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
'04 90 TD5 - Written off :(

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Offline SteveG

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Ashcroft transmissions TD5 Gear upgrade
« Reply #2 on: April 29, 2007, 20:55:00 »
You could always fit larger tyres and get same effect. If you don't like it you can go back to smaller diameter tyres.

Cheers

Steve

Offline thermidorthelobster

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« Reply #3 on: April 29, 2007, 22:21:43 »
Quote from: "SteveG"
You could always fit larger tyres and get same effect.

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.
David French
Tree-hugging communist
1999 Discovery II TD5 Manual
Patriot roof rack, QT Services diff guards front & rear, DiscoParts steering guard[/url], Autologic ECU upgrade, 2" Old Man Emu lift, 235/85R16 BF Goodrich All Terrains, Safari snorkel, DiscoParts jackable sills, Warn Tabor 9000

Ex Disco 200TDI, P38a 4.6HSE and 101FC 6x6 Camper.  Africa Trip Blog

Offline burgerman

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« Reply #4 on: April 30, 2007, 08:25:11 »
she runs 235/85/16 at the moment , but im wondering if its worth the money for the gain ??  anyone localish to hampshire/berkshire currently using this set up ???
TD5 with a few Tweaks ;o)
a bit more fuel friendly than the V8

Offline SteveG

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« Reply #5 on: April 30, 2007, 09:26:34 »
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.


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

Offline Mr Bump

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Ashcroft transmissions TD5 Gear upgrade
« Reply #6 on: May 30, 2007, 11:53:33 »
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


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

Offline L90OOK

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« Reply #7 on: May 30, 2007, 17:20:07 »
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.
Did everyone see that?  Because I will NOT be doing it again!

 

Offline richo

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« Reply #8 on: May 31, 2007, 20:35:42 »
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.



What sort of money we looking at for this up grade mate as i would like it done to my 110csw td5
Jesus was a carpenter but god was a plasterer.

Offline L90OOK

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« Reply #9 on: May 31, 2007, 20:49:41 »
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
Did everyone see that?  Because I will NOT be doing it again!

 

 






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