Thread: 2001 TD5 (110) inline fuel pump

The pump is 2 stage, 0.75bar through the filter and then 4 bar (60psi) to the rail.

I think the flow rate is 180l/hour from the std pump

near enough and theres no simple replacement due to the configuration of it all..

IVe come close but havent been able to come up with something that will last the distance and still maintain correct filtration without undue risk to the pump without going over the cost of a new pump unit.

Im still working on it.

IMO it would be relativley easy to set something up with say a lift pump to a swirl pot, then an injector pump with the relevant in line filters (3 micron) to get the cleanliness of fuel, but as Dave says it wouldn't necessarily be cheap.

so far the closest Ive managed to get is

a cheap petrol efi pump from a ford which acts as the initial pump then a second high performance pump from a speed shop the effect on the plumbing from the POV of the external tank plumbing is non existant.

heres the problem

1. you cant just field hack this setup
2. it draws more amps
3. it has more connections inside the tank that can fai
4. all told it costs about the same as a new pump for a defender (which is the pricer of the 2).

My other solutions......

1. A single pump fitted to the low pressure circut that does all the flow work. This works, its cheaper needs a little bodging that can be done in the field BUT it will show up any potential leaks in the system and cant deliver enough pressure or flow to the engine for full power operations. Its cheaper than the disco pump. The limiting factor is the filter and the fact that if you want to switch over to high pressure high flow in this configuration you will be putting unfiltered fuel straight into the pump, thats bad.

2. a single pump fitted to the high pressure side.
as above it works, its field bodgable but has the following problems
any leak is going to let the pump suck air, that will kill the pump quickly and cause running problems. you will also be trying to draw the fuel up through the LP side of the system and the filter which is bad for the pump and will hasten its demise.

3. a pair of external pumps.
again field bodgable but also requires significant joining of both fuel and electrical lines and you need to secure the pumps somewhere. The pumps cost more than my first solution.

All of these solutions have one other draw back. To implement them you have to be able to get to the fuel pump inside the tank so if your going to that effort you might as well install the right job.

I have had some sucess with mating the disco parts onto the deefer housing.

the biggest hurdles Im facing

If the pump is cheap enough its usually too big to fit in the housing
if its cheap and it fits it doesnt make the numbers
if its small enough and makes the numbers getting both pumps puts the cost out of range.

Thanks all.

I must say that I can’t pretend to understand the difficulties involved but clearly they are.

At present I have two belly tanks plumbed to feed back to the main tank (Longranger 130L) by a small Repco “pump” . There are no specks on the pump but I will ring Repco and find out.

The tanks were designed by members of the Sydney LRC and were a limited run some time ago and fit very well. Combined they hold just under 80 Lts.

In one of the threads “what spares should I take” apart from the kitchen sink, it was suggested a spare fuel pump etc etc.

So I suppose there are two questions posed.

(1) if you’re in the bush and you have a separate fuel source (e.g. belly tank(s)) is it possible to by pass the main pump and just jerry rig it to the fuel filter to get you out of trouble.
(2) Is it possible to do away with the OME fuel pump and have an external pump. This may be advantageous to those with draws in the back and also if you just wish to make the fuel pump more accessible in case of problems.

Any thoughts.