I've got a West German Peirberg Pump for my current setup, but it has to be reigned in by an inline FPR. I picked up an old "AC of England" Glass bowl pump and a full rebuild kit from eBay. I've rebuilt it, but I'm wondering if that pump has enough "oomph" to supply dual HIF6s on a B20E...

Any thoughts or experiences with the really old pumps and late carbs/engine?
I know that I could hook it up and try, but my carbs are down for a busted throttleshaft and return spring, so I can't start the car for at least another week.

Also, any ideas on dealing with the solid fuel lines that this is supposed to use, when I have all-rubber fuel lines in my engine compartment? That is, any idea what to do about the missing screw-in fittings that the AC pump is supposed to have?

You can buy the fittings at any OLD parts house.
You should NOT have to use a regulator with a Pierburg fuel pump but to make
sure get a pressure gauge that reads accurately in the 3 psi (0-10 psi, for
example) and see what pressure you are getting. If it is 3 psi or less the
problem is not the fuel pressure.

The AC fuel pump should easily put out enough for the HIF6 carbs. They don't
take any more fuel than any other carb at the same engine performance level.
Across the board the same fuel pumps are prescribed for the B30s as for B18
and B20. They use at least half again as much fuel, at least wide open,
and fuel starvation is rarely a problem. (Flooding is another matter entarly.)
--
George Downs Bartlesville, Heart of the USA!

After I installed a Borg & Beck replacement fuel pump I needed a pressure regulator. I hooked up a pressure gauge and set the regulator to around 1 to 1.5 psi and never had starvation issues.

The engine / head was a B20F + 0.030 that I removed the injectors and installed HIF carbs on.

I think running with this low pressure a rubber fuel line is fine. Actually came from the factory with rubber lines. IIRC SUs don't like much over 3 psi. I prefer to run them lower.

Bottom line, I'd suggest getting a pressure gauge an quit trying to guess. I suspect the AC pump will be adequate.

--
Tom - '60 544, '68 220S, '70 145S, '72 144E (formerly my driver, now parting out), '86 745T

Do you have a fuel pressure gauge?

I can't imagine how the Peirberg pump could have too much pressure, they are OEM. The spring in the pump determines the output pressure & I find it very hard to believe that someone actually tampered with the spring in one.

Especially since at least the latest ones are swaged together and you can't
take them apart without destroying them! The ONLY possibility I see with a
new one is if they somehow put a stronger spring in by mistake at manufacture.
--
George Downs Bartlesville, Heart of the USA!