Tyty
Member Since: 18 Aug 2022
Location: South West
Posts: 81
  
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| 4.4 TDV8 - 8 Speed - Discovery 4 fitter in Russia. |
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Doing a deep dive on the web, stumbled across RR-Master (https://rr-master.ru/).
Offering v8 retrofits, mainly the 3.6 TDV8 to 6 speed boxes, however they have done what was thought to be impossible and fit the 4.4 in to MY14+ Disco 4.
This has sparked my interest because my 2014 disco 4 (47k miles) is on its second engine (2018 crank) and has been rebuilt again in 2023 due to metal filings in the oil filter (bearing failure).
In comparison the 4.4 TDV8 seems to be much more reliable (maybe turbo issues on higher mileage), similar fuel economy, a bit more powerful and obviously the v8 grumble.
Seeming that it is possible, can anyone shed any light electronics wise, would it require a new ECU? Obviously new/modified engine harness. Fuel pipes etc.
Does the BCM need to be changed too? Would I lose rear climate control as I don't believe that was a feature on any vehcile the 4.4 was offered on?
Any thoughts appreciated.
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 4th Aug 2023 11:23 am |
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Moo
D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14425
  
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Speak to Disco Mikey. He's done it in a D3. D4 HSE EU6 (Known as Jeeves)
New Defender L663 110 SE (known as Noddy!) Sold
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner 
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
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| 4th Aug 2023 11:48 am |
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Tyty
Member Since: 18 Aug 2022
Location: South West
Posts: 81
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As far as I understand, Disco_Mikey only did the 3.6 to a 6 speed box which is not compatible with the 8 speed box
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| 4th Aug 2023 11:55 am |
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Tyty
Member Since: 18 Aug 2022
Location: South West
Posts: 81
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Thanks Both, Will get a quote from oldjaguar.com
Disco_Mikey when you did your conversion do you have to swap out the BCM for a RR one?
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| 7th Aug 2023 9:23 am |
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