Holley fuel pump identity?

[Steve_D]

I have an installation using a Holley pump for low pressure and a Bosch 044 for high pressure from the swirl pot.

My question is how do I identify which Holley pump is installed?
The Red, Blue or Black top designation seems to be identified from a label on the mounting bracket only my install has a billet bracket so that ident method is lost.

If someone can tell me the part number is stamped on it somewhere then it may merit the couple of hours work I think it will take the get at and remove the beast.

As a critical part on a competition vehicle I want to source either a spare pump or a service kit.

Many thanks
Steve

[stevieturbo]

A picture might help ?

I didnt think most of those Holley pumps flowed very much ?

[trv8]

Get in touch with Speedflow, they should be able to help you out.
http://www.speedflowshop.co.uk/holley-fuel-pumps-a...

[trv8]

And I got the rebuild kit from Summit Racing...
http://www.summitracing.com/search/brand/Holley/Pa...

[Steve_D]

stevieturbo said:

A picture might help ?

That's part of the problem...just looking at it, or a picture, does not help as they all look the same from outside.

stevieturbo said:

I didnt think most of those Holley pumps flowed very much ?

If we consider the free flow rate, which should be close when just filling a swirl pot, the rates are..
Red = 97gph
Blue = 110gph
Black = 140gph

Even the Red Top should be enough for my application which I'm guessing to be less than 300hp.

Steve

[stevieturbo]

Was thinking more the fact the 044 will outflow most of them.

Or do you return fuel from the rails to the swirl tank as well ?

[Steve_D]

stevieturbo said:

Was thinking more the fact the 044 will outflow most of them.

Or do you return fuel from the rails to the swirl tank as well ?

Good call.
I think it returns to the swirl pot but can't be sure..... will have to check when I'm back in the workshop on Tuesday.

Steve

[stevieturbo]

Steve_D said:

Good call.
I think it returns to the swirl pot but can't be sure..... will have to check when I'm back in the workshop on Tuesday.

Steve

When I tested my 044's as installed, and pumping out via a single -6 return.
At 13.1v, 60psi they flowed equivalent to 486 lph.
SO That's roughly 243lph per pump.
At 14v I would expect that figure to be over 250lph with ease, and that was at 60psi test !!
I just couldnt easily achieve a full 14v for the static test. And also if it was a single pump pushing the fuel through the single line, I'd imagine it would flow even more due to being less restrictive overall. And likewise with less pressure used.

So I dont think it unreasonable to say that under a lot of circumstances an 044 could easily be pushing 280lph

The free flow of the Holley's is good, but it only takes a small amount of pressure to drop it considerably.
And although there is no regulator, I'd still think there would be some pressure in the line pumping it into the swirl tank.

Unless of course their published data is very conservative. Bosch's own data for an 044 is very conservative comapared to real life.

Edited by stevieturbo on Saturday 23 April 09:12