The Holley pumps are LOUD. I have one in my Cobra, the red pump, and it makes a lot of noise. Then again, it is RIGHT behind where I sit in the car. I would think two Facet pumps would make a lot less noise, but I agree with the above that one Facet pump would not keep up with a decent size Ford V8.
Too bad (the old lament) that they won't make the SW pumps again. Those kept up fine, didn't they....
Jim
We are not talking about the same pumps
The pumps you are talking about are a vane style rotor pumps, and of course they are loud.
Holley Performance Electric Pumps – Carbureted Products
The pump i´m talking about is the type 12-125 and 12-150 pump which is a gerotor style pump and is not noisy at all.
Mike. Chuck has mounted his 12-125 above the fueltank. In his build log you can find a video where he test te suction capability. worksjust fine. He has no issue with that pump beeing mounted above fuel level.
I have not yet mounted my 12-150 Holley pumps. My Aeromotive system works great
http://www.gt40s.com/forum/gt40-build-logs/24525-toms-rcr-40-trackracer-21.html#post295830
The pump is this pump
Aeromotive*|*11213 - SS Fuel Pump - ORB-08
they used to have flowcharts on their website but i could not find it anymore. Anyhow i remember that this pump still flows >100 gph against 5 PSI.
As it is also a vane style pump it can be loud at some times, especially when run with a noreturn line style fuel system against a deadend regulator. Performance wise they support my >500 hp engine flawless.
Facet´s are pretty common and popular in UK, never understood why, imho they don´t belong in a car like hours with this fuel demand. THey may be good in some 4 banger lotus and ford escorts are cars like that, but as soon you face serious fuel demands they are just not up to the job.
I would always try to dimension teh volume rate of a fuel pump at least 20% higher than the max fuel demand of your engine
TOM