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Christophe2009
Member Since: 03 May 2024
Location: East Sussex
Posts: 2
  
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Hi all,
I have a Discovery 3 6 speed auto,
While i'm more than happy with it, i've had it 10 years and has never let me down.
I am often asked why don't i get a newer car as i've had it so long ?
Honestly there's nothing i'd want to change it for except possibly and 8sp D4.
So my question is has anyone been silly enough to swap out the 6 speed for an 8HP one ?
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 3rd May 2024 2:09 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10376
 
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Why?
I got an 8 spd jag and as you pull away slowly, it spends most of its time shifting up the gears until it gets to 4th at 30 mph
Well seams like it anyway. 
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| 3rd May 2024 2:56 pm |
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DIY Ace
Member Since: 06 Feb 2019
Location: Hampshire
Posts: 899
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There are a lot of us silly people on this forum, but I doubt any so silly as to try that
..!
That said, someone always needs to go first, so do let us know how you get on  2022 BMW i4 M50. Bought Oct 2022. 10,200 miles and counting...
2014 BMW 435d convertible. Bought July 2021. 58,000 miles and counting...
2005 Discovery 3 HSE Auto. Bought Feb 2019. 169,000 miles and counting...
2009 Freelander 2 XS Manual. Bought Sep 2013. SOLD Aug 2021 (already regretted!)
https://youtube.com/channel/UCO_u_0D45x9KGfiNstzLJnw
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| 3rd May 2024 3:03 pm |
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Christophe2009
Member Since: 03 May 2024
Location: East Sussex
Posts: 2
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If no-one has done it before, for the sake of some labour I may have to be the first.
I can't see any mechanical issue with why it wouldn't work but possibly a programming one where the car can't see 7th & 8th and won't show on the dash when in manual mode.
My car is a late D3 so it may have the necessary software to cope with it.
I'll leave it a while to see if anyone is as warped as I am and commented on their experience and if not may just give it a go, i've got a spare 8HP to try.
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| 3rd May 2024 3:14 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10376
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I think the CANBUS speeds is the biggest worry.
And maybe the 8 spd had the round gear selector knob
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| 3rd May 2024 6:38 pm |
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loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 606
 
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Christophe2009 wrote:If no-one has done it before, for the sake of some labour I may have to be the first.
I can't see any mechanical issue with why it wouldn't work but possibly a programming one where the car can't see 7th & 8th and won't show on the dash when in manual mode.
My car is a late D3 so it may have the necessary software to cope with it.
I'll leave it a while to see if anyone is as warped as I am and commented on their experience and if not may just give it a go, i've got a spare 8HP to try.
Its not the labour thats the problem, getting the trans to talk to the different CANBUS speeds, swapping into a D4 is possible and is being done here in AUS.
Physically it will bolt in but everything else is where the work including adapting a suitable shifter.
I would do it myself if it could be done easily.
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| 5th May 2024 1:13 am |
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