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JohnPaynter

Member Since: 23 Nov 2020
Location: Falkirk Scotland
Posts: 21

3.9 V8 into 2002 td5?

Is this possible?
If anyone has done anything like this I would like to know what goes into it..what conversion plates or parts are needed for the gearbox and any other things that i will need to consider...
i just want an offroader defender for fun but the td5 does not run
a v8 will no doubt be more fun...and probably less efficient

24th Mar 2021 1:50pm

htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

Yes will fit.
Easiest way is Discovery engine and gearbox, ashcroft conversion for gear selectors to fit defender ones on.
Cut off TD5 engine mounts, weld on V8 ones.
Change throttle pedal to cable type.

24th Mar 2021 4:04pm

JohnPaynter

Member Since: 23 Nov 2020
Location: Falkirk Scotland
Posts: 21

will that mean it will be an auto or not?
kinda want a manual...
suppose u can get manual disco v8s but theyre quite rare are they not?

24th Mar 2021 4:25pm

htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

Had a manual 3.9on a R380 gearbox in a Discovery 1 which I took out to go Tdi

24th Mar 2021 4:30pm

JohnPaynter

Member Since: 23 Nov 2020
Location: Falkirk Scotland
Posts: 21

is this the Ashcroft conversion selector
https://www.ashcroft-transmissions.co.uk/d...l?page=all

24th Mar 2021 4:58pm

htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

That's the one, saves splitting the box to put defender sticks on.

24th Mar 2021 5:01pm

JohnPaynter

Member Since: 23 Nov 2020
Location: Falkirk Scotland
Posts: 21

Ok thats very handy to know...thanks
whats the electrics side of the conversion like....? because im not good with electrics so thats whats worrying me
id like to keep the td5 dash if possible

24th Mar 2021 5:03pm

htb2

Member Since: 02 Nov 2018
Location: Carmarthenshire
Posts: 529

Martin on here would be the one to speak to regarding the electrics side re the TD5 dash. Mine were relatively easy as for a Tdi I only needed a keyed live for stop solenoid and one for starter.
Whats up with the TD5 you have, not be better spending the money on it as diesels better waterproofed for off road etc

24th Mar 2021 6:23pm

JohnPaynter

Member Since: 23 Nov 2020
Location: Falkirk Scotland
Posts: 21

its a fine engine i reckon....just somethings not right with it....cranks healthily
has plenty of compression
changed cps, fuel pump, fuel pump is putting out enough pressure and still nothing doing...
healthy engine plenty compression just no fuel getting there
it was on a site for years a trashed by kids who cut some wiring in the doors etc

25th Mar 2021 7:17am

JohnPaynter

Member Since: 23 Nov 2020
Location: Falkirk Scotland
Posts: 21

now considering putting an m57 bmw in...lots of people have done them and it looks relatively straightforward....the only annoying thing seems to be how hard it is to find a six speed manual bmw gearbox....not sure an r380 would cope very well

25th Mar 2021 7:20am

JOW240725

Member Since: 04 May 2015
Location: Suffolk
Posts: 7904

2012 Defender 110 Puma 2.2 XS CSW Orkney Grey

Great project which ever way you go, keep us posted

You don't hear many people converting to the 3.9V8 anymore. James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html
MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641
MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557
Instagram @suffolk_rovers

25th Mar 2021 9:56am

Romadog

Member Since: 07 Jul 2011
Location: Powys
Posts: 1749

Have you spoken with Ashcroft Transmissions as they do kits for auto boxes on M57 and rebuild R380 boxes for both P38 and Defender?
https://www.ashcroft-transmissions.co.uk/m...f-kit.html

25th Mar 2021 12:04pm

JohnPaynter

Member Since: 23 Nov 2020
Location: Falkirk Scotland
Posts: 21

I did check that out but i want to keep it manual if possible and stay with the r380.
think the m57 will bolt straight onto the p38 bell housing which goes onto the r380? not sure if thats right....but the m57 is looking the way to go...so many engines available...

25th Mar 2021 12:07pm

Marta

Member Since: 21 Feb 2024
Location: New Caledonia
Posts: 3

Hi, I just saw your post. So? Has your project been successful? I did exactly the same.

5th Mar 2024 9:51pm

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