Aprilia petrol pump - NEW ?

[simonandjuliet]

I would like a new, correct style (ie banjo) fuel pump for the Aprilia so that I can getting her looking and functioning correctly

I currently have a pump with spigots and rubber hose, but want to refit the original set up with filter, copper pipe etc.

I know that other pumps (2CV for example) can be fitted, but do not look right

Question 1

Does anyone know of a source of new pumps at sensible prices ?

Question 2

How many people would be interested in a new pump with correct fittings and resembling (not perfect copy, but correct form) if they could be had for less than 50 euros ?

[chriswgawne]

Could you possibly put a picture up of what you want Simon?
chris

[simonandjuliet]

Some photos of the real thing plus the TAVs. From what I can see looking at both 1st and 2nd series parts books, they look identical across the series.

Unless anyone knows better ......

I have 3 pumps that I could rebuild so long as I can find all the seals etc, however, there is something re-assuring about having a new, leakproof new pump, so long as it looks right and fits correctly.

I am going to keep my electric pump, but re-wire to be a starting pump only, hence the need for a reliable mechanical pump

[tzf60]

Hi Simon! I'm interested in a new pump for my Series 1 engine. I have a couple of pumps at present, but both would require rebuilding.
 
Kind regards,
Tim

[chriswgawne]

Simon,
I have a period ALIT 'Super Export' petrol pump with banjos fitting which is visually the same (?) as your TAV. Of course the top of the pump can be rotated to give the desired position of the fuel flow in/out. This pump has a new diaphragm and is working fine. I have the same on my B12 and these pumps are original factory fittings for Aurelias  (along with the more common FISPA). I can probably find banjos if necessary.
Also attached is a photo of a banjo type FISPA fuel filter with new filter, spring, seal and glass bowl. Again originally fitted to Aurelia's by the factory.
Any interest let me know.
Chris

[ColinMarr]

Pardon me if this is a bit like grandmothers and eggs, but the following comment might be useful. The Aprilia fuel pump is actuated by a long push-rod, which I think is not shown in the parts diagram. After many years of use it is possible for wear on some of the working surfaces to shorten the throw at the pump end and so reduce its effectiveness. An old-school solution was to lengthen the push-rod by careful hammering at the middle section of the push-rod. I am sure purists would disapprove!

Colin

[GG]

+1 for the mention of the long activating rod. When rebuilding an Aurelia engine some years back, we got into checking output of fuel pumps with a pressure gauge. There was a lot of variation between different pumps, but more striking was the impact of the rod length: even just gasket thickness on the ump mounting impacted the effective length of the rod. Output pressure varied from 1 to 7 psi, even with just the same pump, just by changing the gasket. Setting the rod length correctly is important.

Walt Spak (a long time Aurelia expert) surmised that as Aurelias got older, its possible the rods wore, and the mech'l pumps ended up putting out too much fuel pressure and washing down the cylinder walls.This argues for both checking your pump (on the motor) with a pressure gauge, and possibly fitting a pressure restrictor.

[JohnMillham]

+1 for the mention of the long activating rod. When rebuilding an Aurelia engine some years back, we got into checking output of fuel pumps with a pressure gauge. There was a lot of variation between different pumps, but more striking was the impact of the rod length: even just gasket thickness on the ump mounting impacted the effective length of the rod. Output pressure varied from 1 to 7 psi, even with just the same pump, just by changing the gasket. Setting the rod length correctly is important.

Walt Spak (a long time Aurelia expert) surmised that as Aurelias got older, its possible the rods wore, and the mech'l pumps ended up putting out too much fuel pressure and washing down the cylinder walls.This argues for both checking your pump (on the motor) with a pressure gauge, and possibly fitting a pressure restrictor.

I would have thought that a worn rod would make the pressure lower, not higher.
Regards, John

[GG]

You've got a good point there. Maybe he was thinking of just mis-fitted pumps....

[simonandjuliet]

I have been running a 2CV pump for a short while and it appears to be OK. I have now received some diaphragm material so will rebuild my original pumps, however I am still pursuing remaking pumps, so watch this space ......

Re pushrod length: the 2CV pump lever is proud of the pump (unlike the original Aprilia pump) and will therefore allow for rod wear - I think !