Disco tank into County

[chopper]

Has anyone fitted a Disco 1 fuel tank into a County . Looking to convert to EFI.
Cheers.

[p38arover]

What about a Defender tank instead? Dunno where you are located Chops but Captain Rightfoot has a tank in the give-away Markets section

P.S. Thread moved as it is neither a Project nor Tutorial (at this time).

[chopper]

Its been a project since I bought it , anyway where has it moved to ?
Would the defender tank be Diesel though, what sort of pressure would it be suppling ?
Its OK I found it , here !

[p38arover]

Well, the tank isn't pressurised so the pressure will whatever the petrol fuel pump (you fit) supplies.

[bee utey]

I did this recently for a customer, the fuel tank you need is from a 1986-1989 Range Rover 3.5 EFI. It bolts straight in to a 110 County. The fuel gauge works and all you need is to run the EFI pump wiring forwards to the ECU. I used the tank, fuel lines and pump wiring off the 3.5 RRC I'm wrecking. It just needed slightly longer hoses to connect the pump.

I used a 1993 RRC 3.9 EFI loom, MAF and inlet manifold and put the ECU next to the battery. The loom needed only a little modification to work.

[Slunnie]

I did this recently for a customer, the fuel tank you need is from a 1986-1989 Range Rover 3.5 EFI. It bolts straight in to a 110 County.

Bee utey, do you think thus would also work with an EFI Discovery 1 tank?

[bee utey]

Bee utey, do you think thus would also work with an EFI Discovery 1 tank?
The plastic fuel tanks used in D1s and 3.9 RRCs have different mountings to the County. You'd have to cut off the existing County chassis mounts and fab new ones. That's why the earlier RRC steel tank is better, it goes straight in without mods. Wiring is easier too as the two steel tanks share the same position for the sender unit.

[Slunnie]

The plastic fuel tanks used in D1s and 3.9 RRCs have different mountings to the County. You'd have to cut off the existing County chassis mounts and fab new ones. That's why the earlier RRC steel tank is better, it goes straight in without mods. Wiring is easier too as the two steel tanks share the same position for the sender unit.
Legend, thanks very much for this. Greatly appreciated.

[chopper]

bee utey , what mods need to be done to the harness ?
and does the RR tank have the pump and fuel sender loaded in the top or in the side like the original County ?
Cheers

[bee utey]

bee utey , what mods need to be done to the harness ?
and does the RR tank have the pump and fuel sender loaded in the top or in the side like the original County ?
Cheers
I quote meself from just a few posts ago

Wiring is easier too as the two steel tanks share the same position for the sender unit.
OK?
The fuel pump is in the top on its own.

The wiring harness needs extending at a couple of points to reach components that are not in exactly the same place. I'm sure you'll work it out. I fitted the MAF and air cleaner behind the engine instead of front left. The EFI needs only two connections from its multi plug connector to the existing County loom to run, battery power (plain brown), ignition power (plain white), then to the ignition coil negative (white/black stripe). All other connections apart from earth (black on a ring terminal, to engine block) can be ignored. Then you need to connect the fuel pump (white/purple stripe) and its earth to either the multi plug or straight to the pump relay beside the ECU. Don't try to use a soft dash EFI loom as they are integrated unlike the '91-'93 loom that is basically stand-alone.

[chopper]

bee utey, good morning,
I have a stand alone system from a 93 Disco . Don't I need the speed sensor as well wired in , originally on the Disco this plugged in not directly to the EFI harness so I don't know what to do with it / where to tap it into the EFI harness. Do you wire in the fuel cut-off switch ? I read somewhere that there is an inhibitor switch wiring , and with a manual trans this has a certain resitance installed and then grounded ? I think its the orange wire hanging out of the end of the harness before the main 9 pin plug , would the reistance already be in the harness or would it be in the main body harness somewhere ?
Questions Questions , Cheers

[bee utey]

bee utey, good morning,
I have a stand alone system from a 93 Disco . Don't I need the speed sensor as well wired in , originally on the Disco this plugged in not directly to the EFI harness so I don't know what to do with it / where to tap it into the EFI harness. Do you wire in the fuel cut-off switch ? I read somewhere that there is an inhibitor switch wiring , and with a manual trans this has a certain resitance installed and then grounded ? I think its the orange wire hanging out of the end of the harness before the main 9 pin plug , would the reistance already be in the harness or would it be in the main body harness somewhere ?
Questions Questions , Cheers
You can complicate this thing as much as you like, I'm only telling you what I did and the fact that it worked without any other crap wired in. As for the D1 harness, its too short to put the ECU next to the battery so you'll have to live with that or extend the harness to wherever.

[chopper]

I am actually trying to un-complicate it, thanks anyway.
As for the computer, I wasn't real keen on locating it in the battery environment.
Little things like the fuel cut off switch would make the install legal , but WGAF anyway right , keep it SIMPLE.

[Mammalalien]

If it would help, I'd be happy to post a few photos of the Rangie EFI fuel tank setup that Bee-utey described :)

Looks very neat indeed. You'd be hard-pressed to tell it was non-standard without lifting the bonnet… or front passenger seat :D

[chopper]

If it would help, I'd be happy to post a few photos of the Rangie EFI fuel tank setup that Bee-utey described :)

Looks very neat indeed. You'd be hard-pressed to tell it was non-standard without lifting the bonnet… or front passenger seat :D

That would help , Thanks

[Mammalalien]

Massive number of photos incoming, check back in a few minutes :)

[Mammalalien]

Here you are. I've labeled them with figure numbers for easy reference.

Figure 1: Tank.
https://www.aulro.com/afvb/images/imported/2014/07/330.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9337_zpsba153ddb.jpg.html)

Figure 2: Tank.
https://www.aulro.com/afvb/images/imported/2014/07/331.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9335_zps49097391.jpg.html)

Figure 3: View of fuel tank from driver's side wheel arch.
https://www.aulro.com/afvb/images/imported/2014/07/332.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9338_zps18814a2d.jpg.html)

Figure 4: View of fuel tank from driver's side wheel arch.
https://www.aulro.com/afvb/images/imported/2014/07/333.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9342_zpsfbf36147.jpg.html)

Figure 5: Close up of fuel filler pipe area (from driver's side).
https://www.aulro.com/afvb/images/imported/2014/07/334.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9341_zps0da1914d.jpg.html)

Figure 6: Oxygen Sensor behind the Y in the exaust. Not sure if this is for the petrol fuel injection system or the fancy new gas controller that Bee-uety installed at the same time.
https://www.aulro.com/afvb/images/imported/2014/07/335.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9332_zps912e7cc4.jpg.html)

Figure 7: Fuel injection loom exiting the battery box.
https://www.aulro.com/afvb/images/imported/2014/07/336.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9333_zps2bbb05aa.jpg.html)

Figure 8: The ECU in the battery compartment (other side of the above) all covered in some Martian terrain. Note: everything connected by ribbed tube is unrelated. The small, smooth tube going off to the right goes down the passenger side of the chassis to… the fuel gauge sensor and/or fuel pump?
https://www.aulro.com/afvb/images/imported/2014/07/337.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9328_zps0a2dfa96.jpg.html)

Figure 9: View of the tank from the passenger side wheel arch. The other end of the wire mentioned above.
https://www.aulro.com/afvb/images/imported/2014/07/338.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9320_zps55ffcd04.jpg.html)

Figure 10: Engine bay overview. It’s the original 3.5 block underneath all that noodlework.
https://www.aulro.com/afvb/images/imported/2014/07/339.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9324_zps49bff725.jpg.html)

Figure 11: Looking down on the injection manifold. Sorry, should have used a flash.
https://www.aulro.com/afvb/images/imported/2014/07/340.jpg (http://s1328.photobucket.com/user/mammalalien/media/County%20Fuel%20System/DSC_9326_zps2b475564.jpg.html)

Let me know if you need photos of anything else or same components from another angle. If you want to zoom in closer, you can grab the high-res images and a few more angles from here https://www.dropbox.com/sh/m1a3bbh8maxsjke/AABK7m2kZwdQZw-Xq8nfPmoYa

If I remember correctly, the fuel pump runs the whole time, even when on gas. Apparently this is possible because the early fuel injection systems are too simply to know that you've shut off power to the injectors. This makes change-over between gas and petrol super fast. Barely misses a beat, even if I do it going up hill. It does however also mean that if I ever run completely out of petrol, I'll need to pull the fuel pump fuse out in order to save the petrol pump from expiring itself.

For anyone considering this modification for a V8 over the original carbi setup, I can recommend it highly. If you are in SA, Bee-utey is the man to see.


Pt.