Question On Fuel Pumps

[Barry Donovan]

I had this same question not long ago,
went with summit 140gph.

built in relief, just audbile enough to know 12-14psi is kicking around in circles.

a trick for any pump is to let it somehow get to its maximum.

I am at 12psi on a 1 barrel carb and four cyls, full return.
the last problem was the regulator does not exist, I made one.
I actually like the noise.

Another tip I got, I worked on airplanes.. a wavering in pump runtime adds longevity. I am sharing a fuse with hazards and blinkers.. changes runtime everytime I use them ever so slightly.

rotary vane is also a military invention...I am certian it is the toughest and most gentle thing going.

[MR P-BODY]

I had this same question not long ago,
went with summit 140gph.

built in relief, just audbile enough to know 12-14psi is kicking around in circles.

a trick for any pump is to let it somehow get to its maximum.

I am at 12psi on a 1 barrel carb and four cyls, full return.
the last problem was the regulator does not exist, I made one.
I actually like the noise.

Another tip I got, I worked on airplanes.. a wavering in pump runtime adds longevity. I am sharing a fuse with hazards and blinkers.. changes runtime everytime I use them ever so slightly.

rotary vane is also a military invention...I am certian it is the toughest and most gentle thing going.

I was looking at the Summit 140 but I ended up buying the Mallory 140
mainly from guys I know that run the Mallory and they all said it was a
quiet pump.. but I'm still going to mount it on the rubber isolators to help
it out.... it just pisses me off that no one will give you a DB spec on them
at their operating pressure with just the mounting system that comes with it..
next thing I MIGHT change will be the roller cam.. that thing is fairly noisey
also... but at least I know that is a noise that is making power(or at least it
should be) and I have mine set tight on the lash from the factory spec

[Lou]

Mallory 140s are gerotor style pumps. They are quieter than the holley rotary vein models (red, blue, black) but you still hear them. A rubber pad and soft joint between hard (aluminum) fuel lines will help. Only other advise would be to carry a spare ... they are hit and miss on longevity.

Holley has some fairly new billet pumps worth looking at for drag week applications .... http://www.holley.com/types/Billet_E...line_Pumps.asp. I just put a -1400 on my car. Extremely quiet + redundancy w/ 2 separate motors. Also E85 friendly. There is some conflicting info online regarding application but from what I can tell the -1800 is just a tuned up version of the -1400 making it the higher hp shorter duration model.

[MR P-BODY]

Thanks for that info