Looking for a quieter electric fuel pump

[78 Mach1]

I have the Holley Blue fuel pump. I mounted it on a custom built rubber bushing bracket that I made. I also used rubber nylon braided hose to prevent vibration through the fuel lines. An I her a full return style fuel system. Even with all that, this pump is too noisy for my liking. So I am asking for recommendations on an in line electric fuel pump that is quiet to replace my Holley blue pump.

Anyone know of a good option?

 

[LILCBRA]

Unfortunately I can't help you. My II is running a Fox tank with an Aeromotive in-tank pump. It's pretty quiet fwiw....

 

[Blackhawkxx]

I have been running one for decades, you just need a louder exhaust. Since you are running a return system, I'm guessing you could use one of those in-line style for a F.I. car but they aren't cheap.

 

[Noobz347]

I have the Holley Blue fuel pump. I mounted it on a custom built rubber bushing bracket that I made. I also used rubber nylon braided hose to prevent vibration through the fuel lines. An I her a full return style fuel system. Even with all that, this pump is too noisy for my liking. So I am asking for recommendations on an in line electric fuel pump that is quiet to replace my Holley blue pump.

Anyone know of a good option?

Where is it mounted? Beneath your feet? Move to the back of the car.

 

[Blackhawkxx]

Where is it mounted? Beneath your feet? Move to the back of the car.

Mine is in the rear and it's still LOUD.

 

[extra_stout]

I feel you... Because I have the explorer engine front dress there is no possibility to install a machanical fuel pump. If you have the place for a mechanical pump... install one.

If you don't have the needed space, perhaps this helps you:
I was thinking of hacking up an used fuel pump pick up and move a pump into the tank. similar to this product:

https://www.holley.com/products/fuel_systems/fuel_pumps_regulators_and_filters/fuel_pumps/efi_fuel_pumps/efi_in-tank_pumps/parts/12-375

There are fuel pumps with low pressure that can be mounted in tank (i think he says which pump in the video):

View: https://www.youtube.com/watch?v=Yv_dJSMMeq8


Here in europe you get it with the part number 191906092A
With this submersible bulkhead fittings you could realize the electrical connection:

TAARKS Electrical Bulk Head Terminal "Submersible" E85 Compatible

Electrical Bulkhead Terminal "Submersible" E85 Compatible

www.efisolutions.com.au

I didn't do it because shipping is so costly in the last time, I didn't want to order an fuel pickup. If a used/cheap spare fuel pick up was available I would try this mod...

 

[78 Mach1]

I have been running one for decades, you just need a louder exhaust.

That’s the thing. I have Sanderson headers with 2.5” pipes going to Pypes M80 mufflers. This exhaust is pretty darn loud. And I can still hear that pump running back there.

 

[78 Mach1]

Where is it mounted? Beneath your feet? Move to the back of the car.

It is all the way in the back mounted between the fuel cell and frame rails. Basically just aft of the rear differential. I used a rubber and spring isolation bracket I built myself. Just like the gyro mounts on an aircraft. I was certain that would keep it quiet. I’m now starting to wander into f that is somehow making it louder by the mount vibrating. But I can’t see any vibrations. Looks smooth and steady to the eye ball.

 

[78 Mach1]

I was hoping an in tank pump would be an option. But I have a fuel cell with the lower sump outlet for the fuel. In order to go with an intake pump, I’m guessing I would have to block off my sump port and then have the fuel feed line come off the top of the fuel cell and then plumbed to my filter from there. My main issue with that is my fuel cell comes through the floor exposing the top of the tank in the hatch. I was trying to avoid pressurized fuel lines inside the car.

Here’s my current setup.

Top of fuel cell in cabin area. The lines you see are vent with roll over valve and the return line from regulator.

Here’s the bottom of the fuel cell with an inline filter and Holley blue pump plumbed just to the left of the fuel cell.

This is a shot of the bracket I made to isolate it from the car chassis. It seems to do a really good job of that.

 

[78 Mach1]

While taking the above pictures, I just thought of one possibility. I am hard lined and stainless steel braided hose all the way back to the tank. I wander if I could be reverberating the sound through the fuel cell. Making it even louder than normal? I’m not sure how to prove that theory. But does seem possible.

 

[extra_stout]

This is a shot of the bracket I made to isolate it from the car chassis. It seems to do a really good job of that.

You have 3 metal pieces between the outside of the pump and the four rubber isolaters... if one of this 3 pieces has a eigenfrequency near the frequency of the pump, this part could make a lot of noise. Best thing is to take a piece of wood and press it against different positions of things that could vibrate, while the pump is running, can help to locate such sources for noise.
Another thing is i read in the interwebz: that they ordered 3 pumps of the same model and always try which one is the quietest pump and the rest they send back. it seems there is within one model a big variation in noise...

 

[Noobz347]

I have cut down and used these before:

https://www.amazon.com/XCEL-Versatile-Protector-Vibration-Machines/dp/B0CJN7279W/ref=sr_1_68?crid=1PLCBXE5713GM&dib=eyJ2IjoiMSJ9.XBPVJxtgXNGPWvxnF2137PtdVdY2C9rFs9Y3_mOg5HSiYb3Gxnph_ONjlf-nt_HBtK-cIemWs2BaWjDRpQc8RAXHUutjbh8Go16icOWyzzuKiI_vxaoWZj1Y4jrUsDRrrG7fBPH-GSTDXYNRyNAS9QUo-Rv5i-JNAJ0RvV8F75k.hWy7EKux3waS8Hmx_K3SeROuJDremKECdzxQjjlUsbM&dib_tag=se&keywords=vibration+isolation+pad+gray&qid=1729972091&sprefix=vibration+isolation+pad+gra%2Caps%2C238&sr=8-68

It's thick enough to drill and mount to your bracket (by itself).

Then drill a [different] hole pattern to fasten to pump to the pad.

It's important not to use bolts that go all the way through the insulator.

There is hardware to attach the insulator to the car and separate hardware to attach the pump to the insulator using a different set of holes.


For instance:

Black holes = Car Mount
Red holes = Pump Mount

No hardware goes all the way through the pad making metal to metal contact between the pump bracket and car.

 

[Adieu]

https://www.summitracing.com/parts/spq-pn1001 Should be quieter, but I don't have direct experience with it.

https://www.summitracing.com/parts/mrg-12s I've used this one before, multiple times, in fact. It's noisy until fuel gets to it, then it shuts up. I currently have one mounted to a sheet of plywood to use as a fuel transfer pump at the shop. I've also used one of these on my '74 Mustang II and on an old MG that the original style pump was no longer available for.


There's the search I set up to find a pump for you:

https://www.summitracing.com/search/department/air-fuel-delivery/section/fuel-pumps-regulators/part-type/fuel-pumps/fuel-pump-type/electric-external?N=fuel-pressure-psi%3A3-15-psi_4-5-8-psi_4-7-psi_4-8-psi_6-8-psi_7-psi&PageSize=25&SortBy=DisplayPrice&SortOrder=Ascending