Advertise on DISCO3.CO.UK
Forum · Gallery · Wiki · Shop · Sponsors
DISCO3.CO.UK > Maintenance & Mods (D4)

4.4 TDV8 - 8 Speed - Discovery 4 fitter in Russia.
Post Reply  Down to end
Page 1 of 1
Tyty
 


Member Since: 18 Aug 2022
Location: South West
Posts: 81

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4
4.4 TDV8 - 8 Speed - Discovery 4 fitter in Russia.

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.
  
Post #23443144th Aug 2023 11:23 am
View user's profile Send private message View poster's gallery Reply with quote
Moo
D3 Decade 


Member Since: 13 Aug 2010
Location: UK
Posts: 14478

Ukraine 2005 Discovery 3 TDV6 S Manual Zambezi SilverDiscovery 3

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 Sad
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 
 
Post #23443204th Aug 2023 11:48 am
View user's profile Send private message View poster's gallery Reply with quote
Tyty
 


Member Since: 18 Aug 2022
Location: South West
Posts: 81

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

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
  
Post #23443224th Aug 2023 11:55 am
View user's profile Send private message View poster's gallery Reply with quote
TheWojtek
 


Member Since: 23 Apr 2016
Location: Poznan, Poland
Posts: 82

Poland 2006 LR3 4.4 V8 SE Auto Chawton WhiteLR3

The 3.6 TDV8 can work with an 8-speed.
Instead of Russians, get in touch with the younger brothers:
https://oldjaguar.com/product-category/engine-conversion/
https://oldjaguar.com/product/transmission-conversion/

They've done it quite a lot of times already.
 Wojtek
L319: dad's
L320: mine 
 
Post #23443324th Aug 2023 1:01 pm
View user's profile Send private message View poster's gallery Reply with quote
Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20853

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

8 speed box can be utilised with a CAN converter

Not a cheap swap though
 My D3 Build Thread

TDV8 Retrofit Build Thread 
 
Post #23443644th Aug 2023 6:10 pm
View user's profile Send private message View poster's gallery Send e-mail Reply with quote
Tyty
 


Member Since: 18 Aug 2022
Location: South West
Posts: 81

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

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?
  
Post #23445427th Aug 2023 9:23 am
View user's profile Send private message View poster's gallery Post Reply
Display posts from the last:  
Post Reply Back to top
Page 1 of 1
Jump to:  
Previous Topic | Next Topic >


Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



DISCO3.CO.UK Copyright © 2004-2024 Futuranet Ltd & Martin Lewis
DISCO3.CO.UK RSS Feed - All Forums

DISCO3.CO.UK is independent and not affiliated to Land Rover.
Switch to Mobile Site