2.5 N/A to 3.9 V8 EFi Conversion

Tmo · Jun 5, 2012

Hi all hope everyone is well, I have been busy converting my knackered old ex mod 90 to a 3.9 v8 efi.

Once I've worked it out I will post some pics of when I started to where I am now and the problems I've come across and still have now.

Hope you enjoy the read and has some use to someone.

Josh

jamesmartin · Jun 5, 2012

are you fitting v8 gear box and moving transmision forward as would be in standard v8 defender

Tmo · Jun 5, 2012

Yes I have also put in a 90 v8 gearbox as 4 pot diesel is way different. V8 bolted straight in and just moved engine mounts.

Tmo · Jun 5, 2012

I'm going to upload each photo as a timeline but have a couple of questions on wires thatbim stuck on

jamesmartin · Jun 5, 2012

it also sits further forward and requires alteration to seat box and floor plates,tunnel etc if put as lr did

baggyjim · Jun 5, 2012

i fitted a 3.5 sd1 motor into my 90 with 4 speed rangie box, if i can help please ask

Tmo · Jun 5, 2012

Is the white plug the one with the 4 cables needed to run the the only confusing part I have is does the ignition one need to be hen ou turn the ignition on or when the key is in the turning over position?

What does this black round plug do? It runs in the same part of the loom as the cables going to coil.

Your help is greatly appreciated

Josh

Tmo · Jun 5, 2012

baggyjim said:
i fitted a 3.5 sd1 motor into my 90 with 4 speed rangie box, if i can help please ask

Ok great I will bear that in mind did you have any issues with propshafts?

baggyjim · Jun 5, 2012

Tmo said:
Ok great I will bear that in mind did you have any issues with propshafts?

front prop is the standard 90 diesel on but the rear one is unknown , called into local indy guy who had a stack of take offs and found one which was the correct length as the original one was 60mm short , my gearbox is on standard mounts and i fabricated new engine mounts as was told the gearbox mount is the fixed position on all 90s etc and work from there

baggyjim · Jun 5, 2012

also the black plug i think is for an early type of diagnostic kit to check amplifier
well thats what ratty told me when i got mine wet on salisbury plains trip and it cut the ignition and engine wont fire , waterproofed it an all well now

jamesmartin · Jun 5, 2012

theres 2 ways to fit v8 and gear box one where you just replace gearbox and leave transmission where it is so props etc is as before or as lr did and move it forward which requires new props and floor plates altering etc ,to run white plug needs battery feed brown wire ,ignition feed white wire and high pressure efi pump feed white and purple

Tmo · Jun 6, 2012

Guys does range rover efi in tank fuel pump fit the tank in my 90?

I'm after a bolt straight in job I've got a facet pump but think it won't be any good for efi after what I've read any ideas?

jamesmartin · Jun 6, 2012

if its out of a steel tank it should be easy enough to get to fit

Tmo · Jun 6, 2012

Ok cool my logic is to get a factory all in one efi unit and just fit to 90 that way save the need for a separate pump etc. I've got some more pics to upload of other plugs that are left which I need some help on I'll post them tommorow thanks dude

jamesmartin · Jun 6, 2012

3.5 rfi pump will work okay same pressure output

Tmo · Jun 6, 2012

Will the first one on this page be as per your post?

Fuel Pump for Land Rover Range Rover Classic V8 PRC7020, PRC8318 - 1989

Tmo · Jun 7, 2012

Ive got some more pics to upload in order to confirm a few things as per previous posts.

This is the Facet pump i have but dont think its going to give me the pressure i need for the EFI

What do these 2 wires and this pulg do? I cant trace them to anything engine wise so am hoping that i can just cap off and isolate and its another thing sensor related etc.

Finally i know the green relay is A/C related but just want to confirm the other 2 and when they should be clicking?

Many Thanks

Tmo · Jun 12, 2012

Anyone at all know what the black plug is with the 2 single black and grey cables please?

Im soo close to finally getting it to run now so will post a video of first start up.

dom140 · Jun 12, 2012

Hiya mate was this engine removed from a RRC? the white plug which has the wires needed to run the engine.. I cant find this plug in my loom. Mine is from a 95 disco

jamesmartin · Jun 12, 2012

Tmo said:
Ive got some more pics to upload in order to confirm a few things as per previous posts.

This is the Facet pump i have but dont think its going to give me the pressure i need for the EFI

What do these 2 wires and this pulg do? I cant trace them to anything engine wise so am hoping that i can just cap off and isolate and its another thing sensor related etc.

Finally i know the green relay is A/C related but just want to confirm the other 2 and when they should be clicking?

Many Thanks

tin relay is power relay for efi ,yellow one should be tin 30 amp too is fuel pump relay white /purple been feed for pump ,when power relay switched on pump relay should click on then off after 4 seconds unless you start engine when it switches on again

2.5 N/A to 3.9 V8 EFi Conversion

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