Dear all

Searching for information on Electric Fuel Pumps I came across the following from Ian to Andrew in the “Canterbury 695” thread.



“Andrew, The car came with the pump fitted, the original pump has been removed and the mounting blanked off. My car has a lot 126 BIS parts (704cc) so I think along with the weber carb the builder preferred the electric option. I have to say that the flow from the pump suits the engine even when flat out and I have never had problems with hot starting or flooding. If you search on ebay there is a chap in Germany (I think) selling the pump at a good knock down price, it's for a Lancia Y10 I believe. if you need photos of my installation let me know.

Ian.”

Not wishing to high jack Andrews excellent thread I was hoping that I might seek any advice and guidance in fitting the PIERBURG type -
7.21440.51.0 (E1F) which I have just purchased from hopefully the said German supplier.

Questions I have are:

· -What’s the best way to mount the fuel pump and where?
· - How should it be wired in?
· - I presume the mechanical pump needs to be removed and blanked off?

Your thoughts and advice greatly appreciated as always.

Peter

1) Mount lower than the tank so it self primes - near battery
2) Wire to an ignition switched supply from the fuse box
3) There is a "fuel pump blank" available

TinTin, did your pump come with a mounting clip? If so it can be easily bolted to the support frame at the side of the spare wheel well. Andrew is correct, mount below the level of the tank so that the pump draws fuel easily. (If you go to the PIERBURG web site and look for 'service information for pump E1F' the sheet will tell you exactly how to mount the pump) Mine is mounted on the right of the front bay (opposite side to the battery) the fuel lines run easier and shorter before running under the bay floor to the rear. My set-up involves a relay with a separate fuse to supply the power. If you need photo's ask.

Ian.

Ian and Andrew

Many thanks both for your help here. I am awaiting for the pump to be delivered in the meantime any pictures of instalation will be most welcome.

Peter

Have you bought a fuel pump blank?

Tin Tin, Please find photo's of my pump installation, you will note that I have used stainless steel braided supply pipe as I'm a bit manic about fuel pressure and old pipe material leaking. You should get a mounting bracket with the pump, the fitting instructions on the web site previously mentioned are comprehensive. Let me know if you need anything else.

Ian.

Hi Ian,

I have not purchased the blanking plate yet, do you have any recommendations ?
I saw this one from Axel but it has a hole?
http://webshop.fiat500126.com/katalog/artikelinfo/6534/fuel-pump-flange-m14x15-premium

Seems expensive and not quite correct.

Regards

Peter

Sorry Ian, I meant to address to Andrew.

But of course also thank you to you for posting the pictures.

Regards

Peter

Hi
The one your showing allows for the breather from the rocker cover to be connected - to return fumes \ release crankcase pressure
http://www.ricambio.co.uk/69-fiat/2...e-and-gasket-classic-fiat-500-126-600-850-900
This will do.......

Hi Andrew

Yes that will do, many thanks.

Peter

Hello all,

I would like to open up this thread again as my electric pump instalation is not quite finalised.

I have been running my 500 with the mechanical pump in situ and thought today would be a good time to finally remove it and blank it off so I would just have the electric one.

I have removed the mechanicle pump without any issue, but the Alternator prevents me from removing the actuator rod that drives the pump.

Do I just cut it two to remove or should it stay in place with some form of modification?

As always your advice is appreciated.

Best

Peter

Remove it!
Bend it as it comes out?
I bought a vented blank - I'm expecting the engine noise/nite to alter as the pushrod in the pump "hammers" away furiously....and now is history......
I have a rubber hose from rocker cover to the new vented blank.

Andrew

Many thanks, and perfect timming as I have nearly finnished wiring in the Pump Cut Out device which I should have fitted from the outset!

Cheers

Peter

Hello Andrew,

Sorry but I have one more question, are you using a pressure regulator and what pressure do you set it to?

I ask as I seem to be flooding the engine with to much fuel, I know the float should cut the fuel off when full and will double check that, but I was wondering if part of the problem was to high fuel pressure.

Regards

Peter

I run a Dellorto FZD 32/28 and was advised to run 2 PSI by manufacturers when specifying jets etc.

How / what are you using as a pump cut out device?

Hello Andrew

This is the link to the relay that I used, apparently a common choice for those retrofitting electric pumps.

http://www.ebay.co.uk/itm/MK1-GOLF-Fuel-Pump-Relay-With-Fuse-321906059C-/181992556124?hash=item2a5f9a065c

Its a VW / Seimens Part number 321 906 059

this posting that led me to it:

http://www.lotuselan.net/forums/lotus-carbs-f40/huco-fuel-pump-t29993.html

It operates by taking a signal from the coil, once the engine has started, should the engine stall then the lack of signal from the coil deactivates the pump. A different approach from the impact operated cut outs.

Regards

Peter

Peter
Its something i hadn't considered
I have a dash mounted kill switch- which shuts the entire power down - but nothing specific to the fuel pump.
Since your post i've been looking at options.
Oil pressure switch seems popular- where until you have oil pressure - no feed to pump......stalled engine results in fuel cut off......
Dash mounted isolator.
Coil feedback switch.
Need time to consider if i need to use some other item than the battery kill switch.....

Andrew

I think as long as you have one of the options then that should be fine, which I did not hence going down this route. My mistake also was that I did not fit a reglator which caused flooding this manifested itself once the mechanical pump was removed.

Hopefully with a regulator fitted easy starting will occur - joy!

This is my updated list of items to consider when installing and Electric Fuel Pump:

Pre Filter
Pump (placement, noise, presure)
Mechanical Fuel pump removal and Blanking plate.
Post Pump Filter
Regulator
Cut Out

Peter

With the old mechanical pump removed and blanked off, has anyone considered fitting their electric pump more or less where the old mech pump was?

Looks an easy option as the plumbing is all there and a 12v supply close by from the alternator or dynamo. Also there's no strain being put on the old fuel pipework running from the front to rear of the car.

Is the catch heat and vibration or are these things designed to take this environment?

I've seen this Lucas one for £58. Any good?
http://www.ebay.co.uk/itm/LUCAS-12v...318778?hash=item464874b4fa:g:PPQAAOxygj5Sjd9e