Fuel Pump in earlier V8s

[GREG]

I can understand having standard service items as spares,although none are rare on a V8, but I do not understand the logic of keeping items like fuel pumps.

However, what do I know !

[pasini s]

Hello,

I decided to stop worrying about my old fuel pump, that works fine but looks quite 'tired', so to speak, and I asked Burlen what pump would they recommend. They said that AZX1405EN is the right electronic pump to substitute my doubloe SU. I bought one and when it arrives I shall install it, keeping the old one as spare. I'll let you know what happens when I have installed the new one.

Thanks

Stefano

[Kevin H]

Originally Posted by GREG

I can understand having standard service items as spares,although none are rare on a V8, but I do not understand the logic of keeping items like fuel pumps.

However, what do I know !

The EFI system for my 411 (which is in boxes in my garage at the moment) has two fuel pumps, just in case one fails!

[john smith]

1969 383 - 411 (S1)
Some years ago I fitted the Edelbrock carburettor, fuel pump (model 1723)
and inline filter.
All work like a dream.
From the Edelbrock item description:
"Performer RPM Street Fuel Pumps
Designed for use with all Edelbrock carburettors used in Performer or
Performer RPM applications. The unique valve design improves flow quantity
and quality, and will support engines up to 600 hp. High-volume, 3/8" NPT
inlet and outlet surpasses the capacity of conventional models. Produces 6
psi and does not require a regulator. For gasoline only. Clockable lower
housing can be rotated for best inlet/outlet alignment."
JEVS

[geo]

Originally Posted by john smith

1969 383 - 411 (S1)

"Performer RPM Street Fuel Pumps
Designed for use with all Edelbrock carburettors used in Performer or
Performer RPM applications. The unique valve design improves flow quantity
and quality, and will support engines up to 600 hp. High-volume, 3/8" NPT
inlet and outlet surpasses the capacity of conventional models.

Glad it works well John, but unless one has increased the performance of the engine, does it ever experience fuel starvation? Not necessarily your usage, but many electric pumps fitted by people as after-market bolt-ons do what it says on the box, but then the inlet valves to the carburretor prevent one from wasting all that precious fuel!

George

[pasini s]

> Hi Sam,
>

just a question: did you have to fit a fuel pressure regulator after the
1404/1405 pump? If you did install one, what did you use? Thank you!

Stefano

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[Sam410]

The SU pump was already fitted when I bought the car. I don't think there is a regulator fitted, but I am not certain what it would look like or be located so if anyone can tell me I shall check.

[john smith]

Geo
Thanks for your contribution, but I am not sure what you are trying to say!
Some twenty years ago I started to 'update' my 383 engine (from 12 miles per
gallon).
I replaced a lot of items and today I am getting 20 (+ or - 2) miles per
gallon depending on the traffic and my temperment.
Remember - the Canadian '383' was manufactured for use in California which
then had very tight emission controls + lead free fuel.
This engine was fitted with a Carter Four Barrel carburettor which met those
emission controls by restricting the airflow through it.
The Four Barrel Weber carburettor allows some 40% more air (cubic feet per
minute).
I have a 360 degree unrestricted air filter + new intake manifold fitted.
No modification to the bonnet is/was required.
The Edelbrock fuel pump was only part of that updating process.
I have three 1950's Carter mechanical fuel pumps which broke down - the
Edelbrock pump uses a different method of pumping and is self regulated at 6
psi as required by the Weber and is much quieter.
Some years ago, the 'leaded' fuel disappeared from the market.
To date, I have not re-tuned for that loss.
My email is jevs@iol.ie if you would like more detailed info.
JEVS