3.9 v8 keep it injected?

I am putting a 3.9 in a defender should I keep it fuel injected of put a carb inlet manifold on it how easy is the wiring and black box for a fuel injected system

its quite easy to install efi as loom ,ecu etc is mostly self contained and seperate to engine wiring loom for starter ,temp sender,oil pressure etc.the main connector just needs feed from battery ,ingnition,and supplies fuel pump

jamesmartin said:

its quite easy to install efi as loom ,ecu etc is mostly self contained and seperate to engine wiring loom for starter ,temp sender,oil pressure etc.the main connector just needs feed from battery ,ingnition,and supplies fuel pump

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Great have you a bit more info wiring diagram etc thanks the engine is about to come out of a s1 disco currently looking a bit sorry for itself

if you put a piccy up of connector i can tell you whats needed

jamesmartin said:

if you put a piccy up of connector i can tell you whats needed

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Ok I will get one I know it's a silly question I am new to injection engines where is the black box on a disco 1

behind drivers side kick panel ,connector is near brake pedal ,you need the 2 relays that come out with ecu

Great thanks any idea about the other post no doors? I will get you a photo tomora thankyou for your help

Question is, what will it be used for? If trundling around roads etc then he Efi is good if kept maintained etc. In the middle of a muddy lane or field with a problem then I would prefer carbs as they are fairly easy to understand and fix accordingly.

I had Efi on my 3.9 series - nothing wrong with it but I had the fuel pump in the tank which left me without a fuel gauge. I've fitted re-jetted SUs now just for piece of mind and because they were on the shelf.

I'm sure people will have other opinions........

I run injection and its an off road car. Ok ok I do drive it on the road, quite a lot tbh when in laning trips etc!

BUT the point is that I think the injection system is great, very simple to diagnose if you do get a fault, often easier to understand than carbs IMO! (carbs are before my time though)

Twin carbs are always going out of tune and ballancing them is a nigntmare I had them for 4 years on an MG.
I run a car now fitted with a Webber carb without any probs and also the efi disco again without any problems.

Remember if you are fitting an engine from a later disco 96MY onwards you will have to cope with the passive engine immobilising system which has inputs into the engine ecu, so it's not quite fit an engine, ecu, pump and wiring loom and off we go.

Brown- per live
White - ign live
Purple/white- fuel pump
And can't remember ground?

You will need two metal relays as already stated. You will also need a little black box (inertia switch)

Mr Noisy said:

(carbs are before my time though)

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:blabla: Bit cruel, I'm not that old

MattMatt said:

:blabla: Bit cruel, I'm not that old

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Don't really see where youre coming from there mate?

What I'm saying is that at 24 most cars were injected before I got to playing with them so I'm not really qualified to comment.

What I do know is that for an off road land rover id never consider taking out 14cux cos it's just too darn reliable and doesn't care what sort of angle you're at!

Chrisabsolute,
I have an engine injection wiring loom for Lucas injection system going spare if you need it. Gratis. PM me if needed, otherwise no-worries.
This is not Flapper system.