Carb to injected??

[Mikey0211]

Hey guys...

just a couple of quick questions...

I'm looking at either gettin a newer fuel injected 3.5lt enginge or just the parts, (ie.. manifold computer etc etc ).. and putting it on my 85 county..


Swapping the parts over or changing the engine, i'm fine with, but when it comes to the wiring side of things i havent had alot to do with....

If i can get a complete wiring loom, is there much i will have to do wiring it into any existing electrics on my county?

any help or advice would be appreciated...

[Lotz-A-Landies]

There are actually a few items you may need to consider. The EFI vehicles had a submerged fuel pump with a full flow fuel return, where most if not all the carby V8's had external fuel pumps (or at least that was my RRc - carb->EFI conversion). The fuel flow is controlled by the throttle position sensor so you need the right fuel pump and return line. I ended up getting a long range tank with the submerged pump during the conversion which solved the pump and return line issues.

As long as you get the complete engine harness all the way back to the ECU along with the other bits like the MAS your biggest problem is going to be mounting the extra bits.

[lambrover]

Ha mate how u going, I have a 85 v8 county as well, but if i were going to do it i would put another engine in say a 4lt or 4.6 with the whole loom and computer that way you are going to get a good power increase for your money and you can sit it on the floor and work out what you need then pull the old one out fit the new one as quick as possible. With your carby one what is your fuel consumption, I have only had mine on the road since christmas and it has been around 25lt per 100km, but my ignition system has been playing up I have just finished puting a MSD 6AL module in, it feels better just need to watch this tank and see how much difference it makes. please let us know your consumption.

[taff]

i've put a 3.9 efi into my county and the biggest problem we had was getting the wiring sorted.
mounting of all the bits is pretty easy as theres a ton of room. you can leave the return fuel lines as is, but you'll need to change the supply lines and like lot's a landies has said an efi pump.
it's also easier if you swap around the position of the p/s resevoir and get a steering box off a later disco - you can then use the disco p/s pipes. you'll also need to do a bit of fiddling around with the bottom rad hose.

[Mikey0211]

Well, I just bought the engine..... 3,5 efi.. only done 120 thou.. its out of a 94 model disco...

Comes with complete engine.. computer, loom etc etc.....

Thanks for the advice on the fuel pump..... didn't even think of that side of things....

Does anyone know whether the standard county tank can still be used to put in a efi fuel pump, or would i have to get a later model tank.????

Thanks guys...

Mikey

[taff]

Well, I just bought the engine..... 3,5 efi.. only done 120 thou.. its out of a 94 model disco...

Comes with complete engine.. computer, loom etc etc.....

Thanks for the advice on the fuel pump..... didn't even think of that side of things....

Does anyone know whether the standard county tank can still be used to put in a efi fuel pump, or would i have to get a later model tank.????

Thanks guys...

Mikey

yep tank can stay the same

[rovercare]

yep tank can stay the same

An external high pressure pump, with surge tank and low pressure lift pump of course

[rovercare]

Looms on these are reletively straight forward, they interface via 1 plug, so easy to sort

[Mikey0211]

An external high pressure pump, with surge tank and low pressure lift pump of course

arghhhh..... i'm confused.. external pump???

[rovercare]

EFI operates @ 30-40psi, carb fuel pumps fill at 5-7ish psi


Something I googled
How To Set Up Your Fuel System - Rollaclub