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Electric fuel pump for street cars

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bigmanjbmopar

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Well the Holley blue is a noisy sob but works great with the regulator.

Finally found a decent place to mount it out of the way and out of site.

Passenger side inner wheel well on the frame, tucks right up under there. Had to use longer bolts since the frame is thicker there but worth it. Now 3/8" line all the way to the carb and fires right up like fuel injection lol.

It's nice to be able to dial in a certain psi for your carb, this one is up to 14 psi, all I need is about 5.5-6 so good to go. :happy5:
 
i have a procomp on my 73 rr, it does make it nice to switch it on, pump the gas one and ignition :D
 
Well after driving around a bit and listening to that Holley blue pump chatter I think I am going to change it, I could probably get used to it but it is LOUD so I am going to switch it out with a gerotor style one should be a little quieter. I can hear the blue pump over my exhaust at idle it's crazy.
 
bigmanjbmopar said:
Well after driving around a bit and listening to that Holley blue pump chatter I think I am going to change it, I could probably get used to it but it is LOUD so I am going to switch it out with a gerotor style one should be a little quieter. I can hear the blue pump over my exhaust at idle it's crazy.
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You can cut down some of the noise by using rubber to isolate the fuel pump. Flat peice of rubber(1/4" or so thick) between mount and vehicle will do wonders for the noise. I had two blue pumps on a street car back in the 80's. One feeding the engine and the other dedicated for the nitrous system. Much like you all I could here was the pump or pumps when in use until I isolated them. The car was a daily driver and the rubber helped tremendously.
 
sometimes return lines help with noise. they also help the pump live longer.
 
Yeah, I can see were thick rubber might make a small difference. I think it is just more of the vane type pumps in general that are noisy, looking across several forums from all makes and they all have the same thing. One guy even used all rubber exhuast hangers to isolate the pump from the body and it still was loud.

I think a return line would definitely help the longevity of the pump but I have read that it does nothing for the noise level, using the stock steel fuel lines that makes noise when gas is flowing though it. I am using all new 3/8" rubber fuel line from tank to pump and pump to reg and then to carb.

I am going to give the Holley 12-125 gerotor pump a try they say it is better on the noise level and last way longer.
 
My last street/strip car had dual Mallory 140's, Mallory filters, and Mallory return style regulators. Same scenario one for engine and one for the juice. My new build will be the first time since high school that I will not use an electric pump or have nitrous for some added punch. Getting older and just want to cruise and look stock appearing or original. What is the best mechanical pump out there? Need to feed my pump gas 512 too.
 
robinsonwr said:
My last street/strip car had dual Mallory 140's, Mallory filters, and Mallory return style regulators. Same scenario one for engine and one for the juice. My new build will be the first time since high school that I will not use an electric pump or have nitrous for some added punch. Getting older and just want to cruise and look stock appearing or original. What is the best mechanical pump out there? Need to feed my pump gas 512 too.
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sounds a little like me. there are some good mech pumps out there. i've been modifying carter 6903 pumps (and i'm not saying they're the best) for my streeters. i have a high pressure carter thats a killer on fuel delivery but requires a regulator (9psi). i'm just too cheap and lazy to hook a good regulator up.
 
I understand what you are saying. If I was building an all out streeter that is on the ragged edge definately electric and return style regulator. My street car will raise hell from red light to red light with no extreme demands. I was thinking about the high pressure but I do not want to have to hide a regulator. I have a 3/8 line from the tank forward and 3/8" sending unit. Do you think the 6903 will supply enough for a 575 horse 512?
 
a 6903 in factory condition and 575hp, i'll say no. some mods, maybe. a 6903 with a tune up will do 3/4 gallon a minute at 2500 engine rpm. i'd probably limit a good 6903 to 500-525hp. you probably need a gallon a minute at the carbs to be safe. an engine needs 1/2 pound of fuel per hour per horsepower at WOT. the high pressure carter i have did a gallon in 30 seconds (actual flow test) at 9psi. more than enough to feed a 600hp engine.
 
I never was a proponent for an electric pump on a street car but I have one on My Demon and can't hardly hear it..really have to listen for it.
 
If you use an isolator rubber mount, you won't hear it much if any. An isolator is made like a motor mount is made....there is no bolt contact at all. When you mount a pump using a rubber pad, it helps but you still have bolts contacting the pump bracket to the car and the bolts will transmit noise.
 
from my perspective the biggest issue with an aftermarket electric pump is reliability. its hard to find a pump rated for continuous duty. some will last awhile but when they don't your stuck. vane pumps can be rebuilt and gerotor gears will last but its usually the electric motor that gives up.
 
I love the sound when I flip the switch! I hear POWERRRRRRRRRRRRRRRRRR.......
 
Well I decided to try out isolating the pump better, I had some rubber from a truck mat about 1/4" thick cut two pieces and used them on either side of the frame rail an I have to admit it did quiet it down dramatically so much so it is livable.

I also used some rubberized undercoating from a spray can on the bolts as they went through the holes in the frame, not sure how much actually mad it on there but it is a lot better now.

Still want to get the gerotor style pump just in case this one fails. I will put up my pwn video of in shortly
 
bigmanjbmopar said:
Well I decided to try out isolating the pump better, I had some rubber from a truck mat about 1/4" thick cut two pieces and used them on either side of the frame rail an I have to admit it did quiet it down dramatically so much so it is livable.

I also used some rubberized undercoating from a spray can on the bolts as they went through the holes in the frame, not sure how much actually mad it on there but it is a lot better now.

Still want to get the gerotor style pump just in case this one fails. I will put up my pwn video of in shortly
Click to expand...

I think you will be pleased with the results after isolating the pump with a rubberized mount, good luck. Give us an update on whether the rubber worked.
 
Make sure you use locking or self locking nuts so nothing backs off. Also, a return line will take the load off the pump when you are running slow and will let the pump run cooler and last longer. Circulated fuel also stays cooler.
 
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