Good place to mount an aftermarket fuel pump? Options

[Tdskip]

Gentlemen, good afternoon. I know there is some debate as to putting the fuel pump here versus in the front of the car, but if I wanted to locate it in the rear of the car is this a good place?


?

[Shadowfax]

I've got my Bosch pump on the rear firewall and haven't had any issues.

[Tdskip]

Thanks for the reply, that's where I was thinking but wasn't smart enough to include the picture I took. I've made that edit and you can now see the proposed location.

[rhodyguy]

You can make up a pigtail for the stock pump wire. Remove the stock plug end but save it with extra stock wires. For carbs use the jumper wire trick. Good to go.

[dr914@autoatlanta.com]

it will mount in the stock position with the omega clamp buffered by a rubber pad as the original is "fatter" than the replacement. All you need is a late fuel filter and a 12mm fuel line

[JFG]

i'm sure i read that these are push pumps when i was researching my fitment. the pump need to be close to the tank

i had mine directly under the fuel tank but i have now fitted it next to the steering rack

[Shadowfax]

See Post #10 here. I mounted mine in a similar fashion. Your pic shows about the same location.

[Chi-town]

Most fuel pumps are not meant for a puller style mounting and will usually shorten their life span and may cause lower fuel pressure or volume.

[GeorgeRud]

Mount it up front under the steering rack with some rubber isolator mounts. You do have to run wires up to it, but it’s in a much cooler location. As far as pulling vs. pushing fuel, gravity will feed the fuel to the pump in either location unless the car is running on fumes.

[TheCabinetmaker]

Mount it up front under the steering rack with some rubber isolator mounts. You do have to run wires up to it, but it’s in a much cooler location. As far as pulling vs. pushing fuel, gravity will feed the fuel to the pump in either location unless the car is running on fumes.

(IMG:style_emoticons/default/agree.gif)

[Tdskip]

Thanks.

For those that mounted it on the rear firewall did you weld studs onto the firewall to mount the pump locating bracket?

Anyone have a picture of the pump mounted up front? Under the fuel tank I assume?

[Olympic 914]

One way.... not the only way.

Limits access to fuel filter.

[JamesM]

Gentlemen, good afternoon. I know there is some debate as to putting the fuel pump here versus in the front of the car, but if I wanted to locate it in the rear of the car is this a good place?

Not a debate, the factory moved it in 75 and issued instructions for relocation on older cars for a reason. If you can get a later style pump cover and don't mind cutting your trunk bulkhead then mount it in the stock location for the 75-76 cars (driver side behind the trunk/tank bulkhead), otherwise put it passenger side by the steering rack near the access hole for the fuel lines.

Sure it will probably work fine for the most part in if you put it back in the engine bay but the potential for vapor lock is real (its inconvenienced me several times). Given you have it out of the car already, just move it up front.

[Tbrown4x4]

One way.... not the only way.

Limits access to fuel filter.

I did mine like this also, but moved the filter to the steering rack. It is mounted where the '75 pump is without the removable plate, so I can add it later.

My teachings about fuel pumps is this: Electrics push well, so close to, or inside tank.
Mechanicals pull well, so close to engine. Although I suspect a mechanical pump needs to be on the engine to actually work.

For power to pump I installed a Revolution Electronics fuel pump controller.

http://revolutionelectronics.com/Fuel_Pump.html

[Coastal6]

Put it down by the steering rack.
Placing it under the fuel tank makes it a major hassle to access because you have to remove the tank to get to the pump.
Placing it in the original location at the rear of the car and you risk vapor lock and the pump has a tough time sucking as others have said.

[JawjaPorsche]

I mounted mine to the firewall over twenty years ago. I removed the interior back pad and drilled two holes. Used very big flat washers inside with the bolt head. Created a small bracket for the fuel filter which makes changing easy.

I used to have vapor lock issues but since moving it the new location over twenty years ago I have never had another vapor lock and I live in the very hot humid south.

Since this picture was taken, I replaced my cooling flaps with new ones from 914rubber.

[Tdskip]

I mounted mine to the firewall over twenty years ago. I removed the interior back pad and drilled two holes. Used very big flat washers inside with the bolt head. Created a small bracket for the fuel filter which makes changing easy.

I used to have vapor lock issues but since moving it the new location over twenty years ago I have never had another vapor lock and I live in the very hot humid south.

Since this picture was taken, I replaced my cooling flaps with new ones from 914rubber.

I have stared at your picture quite a bit over the last couple days, thank you for documenting your work.

Did you weld mounting studs on the firewall or drill a hole through the firewall and put bolts on the cockpit side?

[JawjaPorsche]

I mounted mine to the firewall over twenty years ago. I removed the interior back pad and drilled two holes. Used very big flat washers inside with the bolt head. Created a small bracket for the fuel filter which makes changing easy.

I used to have vapor lock issues but since moving it the new location over twenty years ago I have never had another vapor lock and I live in the very hot humid south.

Since this picture was taken, I replaced my cooling flaps with new ones from 914rubber.

I have stared at your picture quite a bit over the last couple days, thank you for documenting your work.

Did you weld mounting studs on the firewall or drill a hole through the firewall and put bolts on the cockpit side?

No welding. Like it says above, just drilled two holes into cockpit behind driver seat and used long bolts and fender washers. I used a coil bracket to hold the pump.

[GeorgeRud]

You could always use some Rivnuts to make a threaded hole in the firewall as well.

[napasteve]

I used Jawja's picture as a template and put my replacement pump in the same spot. I've had no problems since installation (once I unkinked the fuel line under the gas tank).