Fuel pump replacement.

R

Rover-tragic.

Member
Greeting all,
What would be the consensus vis-a-vis the recommended replacement for the electric fuel pump on a V8?
What are the required flow rates? What are the thread sizes? Are there universal fittings?

Any help appreciated.

RT. :?:
 
The fittings are an odd type so not easy to buy new.

So I undid the pipes on the bottom of the fuel tank, removed the plastic pipe and brazed 1/4 BSP fittings on - so on one end the original Rover connections and on the other the BSP.

I then used 1/4 BSP connections and 5/16 (8mm) copper pipe from the tank through filter and pump to the front of the car. At the front of the car I then used a compression joint to connect the copper to new black plastic pipe which then is a push fit onto the existing Carb fittings.

On the drivers side Carb there is a thinner ( 6mm I think ) run of black plastic which then connects via a compression joint to a 5/16 return pipe at the back of the engine bay.

There is very little room at the back of the car so I did away with the reserve ( may live to regret that yet ! ). The feed pipe is connected to what was the reserve and the original main feed is now the return.

I have yet to test the setup, I may need a pressure regulator on the return - the original return pipe had a very narrow, say 2mm, hole on the tank connection which would have created quite a bit of back pressure.

In the engine bay I used some exhaust wrap ( folded and stitched down the edge ) slid over the copper pipe to provide some heat protection.
 
RT,
I notice from your other post about tank removal that you already had an electric fuel pump fitted. The type and installation of your new pump will probably be dependent on what you have now. First of all, is it fitted at the front or rear? If at the rear you'll need a push pump, for example a facet posi flow or facet cube pump. If it's at the front chances are you already have a pull pump, most likely SU. One of my cars had an SU under the bonnet, fed from the reserve line (the original main line was plugged and the reserve tap by passed), all cobbled together with every type of hose, including what looked like garden hose! I got rid of the su and put a 4psi facet cube at the rear, with braid hose from tank to pump, pump to 8mm copper, straight up to the engine bay and into the carbs via an inline filter and braided hoses. I blocked the original main line from the tank and fed the pump from the reserve, but retained the original return line. This setup was only run for about 30miles with the original carbs before switching to a weber but it seemed to work fine. One of my other cars has a facet posi flow at the rear, fed from the reserve outlet of the tank, and connected to the original reserve line. It is used purely as a backup and the car must be switched to reserve before it is switched on. The amount of modification/bodging carried out on your system and the current pump location will have a big impact on how you should approach this.
Regards,
Dave
 
Thanks for the responses.
The pump that is on there is a Bendix. It is located on the driver's side, behind the rear wheel. I have stripped another pump off a donor vehicle and it is identical to the one on the road car. The fittings also appear identical and there is no sign of any bastardry as far as the lines etc go. This leads me to think that these were possibly factory fitted :?: :?: :?: :?:
Both the cars reside in Australia if that adds any sway to the conversation.
I want to try and avoid the cutting of any lines if possible. Are there any universal couplings available??

RT.
 
Do your cars have air conditioning? All AC cars had an electric fuel pump fitted but as the Aussie cars were converted with an aftermarket system, I don't know what sort of pump they would have used. The UK built AC cars used a pump that is nearly identical to the Facet cylindrical pump with the side entry plumbing. Like this one: http://cgi.ebay.co.uk/Facet-RED-TOP-fue ... 4839d46c10

I'm guessing that they would have just used whatever generic pump was available at the time as the Aussie AC shares very little with the UK/US setup.
 
KiwiRover wrote,..
All AC cars had an electric fuel pump fitted but as the Aussie cars were converted with an aftermarket system, I don't know what sort of pump they would have used
Click to expand...

Hello KR,

Nothing is ever as it should be or possibly meant to be when it involves a Rover,...a 1974 P6B, owned by the one family since 1978, with dealer fitted air conditioning retained the mechanical AC fuel pump,...no electric fuel pump had ever been fitted. The car lives a few miles from where I do, and is in the process of being restored.

Ron.
 
Hi again,
The road car does not have AC fitted but the donor car does. Both the fuel pumps are identical Bendix, cylyndrical type and are mounted in the identical spot near the rear wheel. Apparently the Facet pump is a bolt on replacement with the same screw fittings (this has yet to be confirmed).
Can anyone confirm what an "Interruptor" pump is? I take it that this is not what I require.

RT.
 
Hello RT,

I don't like guessing, but I imagine that an "interruptor" fuel pump will be of the type that starts and then stops automatically (interrupting the flow) on a regular basis as opposed to the constant flow type that the twin SU carburettors with spill return require.

Ron.
 
Update... Update... Update... Update... Update... Update...

Sorry, that was all a bit dramatic wasn't it??
I have bitten the proverbial bullet!! I have just spent the past few hours swapping the knackered pump for a brand new Facet Gold series unit. I have been wallowing in petrol for so long that i feel like a sniffer down on the high street. I have third degree petrol burns up to the armpit on my left arm and I'm sure that the very limited supply of brain cells that I once had has been deminished by about two thirds.
But having said that the pump is in. The fact that I was able to get one ordered and delivered to a local auto electrician from an 11am phone call to a 2pm pick up on a Friday must have filled me with such jois-de-vive that I then convinced myself that it would be a breeze to fit......... And then the sun went down..... and I was stuck half way through and having to use a small portable lantern. I could not raise the car any higher due to safety considerations and the fact that my ramps are currently supporting my donor vehicle so the job was done flat on my back and in virtual darknes.
I desparately want to try the thing out but due to a spill of petroleum product equal to the Mexican gulf my car now sits in a sea of unleaded fuel. Once it evaporates I can safely fire the beast up again. Waiting till tomorrow is like a kid on christmas eve..... has it worked?? Is it leaking?? Will the car start?? Will I end up in orbit with a plethora of new British sattellites?? Stay tuned...........
I will update tomorrow morning.

RT.
 
Hello again to all,
Well I'm alive. Despite my wife's worst (or perhaps her most wishful) fears I did not evaporate in a fire ball of gasoline soaked, vapourised Rover. The ignition turned, the pump primed itself and the car roared into life. I have checked the lines under pressure and, touch wood, there are no apparent leaks. Wonders will never cease!!!

hi,
i gather it is not fully like the NADA set up at the back http://www.rover-classics.co.uk/images/ ... ig_jpg.htm no 44 is the fuel cut off tap and is a brilliant idea, positioned between tank and pump.

joseph
Click to expand...

Funny you should mention that Joseph me old mucker........ There is what appears to be a small circular "tap" on the junction near the fuel pump but for the life of me I couldn't get it to turn. I tried on both the road car and the donor car but it wouldn't budge, even with the help of vice grips. The frustrating part is that I can see no other apparent purpose for this "tap" other than to cut off the fuel. I hope my petrol bath was not a case of operator error. The wife thinks I stink like a mechanic's underwear, the dog turns up his nose every tome he sniffs my hands but for some strannge reason the cats seem to love the smell of petrol. But they always were weird creatures, but I digress.
Onwards to the next thread..................

All the best.
RT.
 
hi rover-tragic,
i hope you have not b------d them up, they do not turn, they are a push /pull tap. the tap will be out to allow the petrol to go through and in to stop it going through to the pump.


joseph
 
:oops: :oops: Hi again all :oops: :oops:

hi rover-tragic,
i hope you have not b------d them up, they do not turn, they are a push /pull tap. the tap will be out to allow the petrol to go through and in to stop it going through to the pump.


joseph
Click to expand...

I should really be tarred and feathered and paraded around the town square for village folk to throw rotten vegetables and eggs and unused exhaust manifolds at me!!!
I did not even think that they may be a push-pull affair. I don't think I have caused any serious harm as once I found that they did not move I did not persist with trying to fiddle with them, hence my wallowing in fuel. But that would explain the lapse in recognising the fuel cut-off, it was the fumes I tells ya.
Let's all hang this one on the learning curve and never speak of it again. :oops: :oops: :oops:

Regards :wink: RT.
 
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