A few electric fuel pump questions

A few questions for those that run electric fuel pumps-
1. Best mounting place, trunk floor or rear frame rail?
2. What guage wire did you use to hook it up with?
3. Where did you hook to 12 volt powersource?
4. What route did you run the wire?
5. Where did you put the regulator[ if used ], close to the pump or carb?
6. Which way to turn screw on regulator to lower pressure [procomp pc-285]?

My setup is Holley blue pump with procomp pc-285 regulator. Holley 600 single line carb.

 

i'll start, i used i think 10 or 12 gauge wire for power and ground, i mounted the regulator in the engine compartment near the carb, ran the wire under carpet thru the trunk on the right side, my pump is mounted on the framerail at the moment, when i get my fuel cell i may remount it somewhere else, dunno bout the screw i left my at 6.5/7 psi

 

Here are my opinions on the fuel pump questions...these do not reflect on the Maverick website or anyone therein...with that said...
1. Mount it as far back in the chassis and as low as possible. This is so you can get the advantage of gravity feeding the pump.
2. Using an Aeromotive A1000 pump I will be using 10 gauge. The larger you can use the better and if you can use a relay to activate it even better.
3. Using a relay the 10 gauge would go to the relay (these can be purchased at almost any auto parts store) and coming out of the relay to the pump. The relay would be triggered by either a manual switch or a wire that is hot when the engine is on. Under the hood I want to say that it's a green wire with a red stripe? (I could be wrong on that particular point.)
4. The wires on my car run from front to back through the interior compartment through rubber grommets where they go through the body.
5. The regulator needs to be close to the carb. The latest thinking is that it should be level with the carb and ahead of it. Once again you are using gravity to help feed the carb on the low pressure side. The high pressure line is doing all the major work.
6. I'm not positive on the Procomp regulator, but on a Holley or an Aeromotive when you screw the screw in it raises the pressure. *If memory serves me right...it's been a while since I adjusted it.
Well, good luck and I hope that I helped out!

 

Yes,Listen to the tony,If you cant mount your pump below the level of the tank,try to mount it behind the tank(G -force on acceleration will help feed the pump) drag racers trick.Also if room permits put a good high flow filter before the pump as well as one after the pump.I know it sounds like over kill but,Good pumps are not cheap and they really dont like dirt or other forms of grunge in them.Tony is dead on about the regulator location as well.You may want to consider running a return line from the carburetor back to the tank as well.This will keep the fuel pressure from stacking up on the inlet side of the regulator which causes your fuel pump to work harder shortening its life span.It also helps to keep pressure even in the entire system eliminating pressure surging.If you plan to run more than one carb be sure to run a regulator for each carb.If you are wondering about fuel pressure at the carb.If its a holley dont go over 7-PSI,8 PSI tends to cause the fuel in the float bowl to become areated which makes for bad fuel distribution and inconsistent mixture quality.6.5 to 7 PSI is optimal unless you are using a power adder such as NOS or a turbo/blower where fuel demand is really high.Hope this info helps you.Good luck.

 

I can add nothing, except mount it to the sturdiest piece you can. If you mount it to sheet metal and not frame metal, it will resonate throughout the car and be VERY loud...

 

I hate to be the bearer of bad news but, they are all loud no matter where you mount them. I once suspended mine just from the fuel lines that were attached to it, still loud.

 

Thanks! Very good info. This is what I need to know,the best ways and things to avoid. And as far as the noise, that really dosen't concern me too much. It's not like I will be driving it every day, and the exhast note may cover it up anyway!

 

I have mine mounted to the sheet metal right beside the fuel line-out of the tank, and it was very loud (you can hear it over my Flowmaster super44s in the sound clip I uploaded).

But I took my car cover and shoved it in the hole in the trunk behind the wheel well where the pump is mounted, and now I can barely hear it at all.

 

If you put a return line from the carb to the tank on it,it will get quieter.

 

I always wondered about that...

Also, mine gets louder when I get under 1/4 tank. I think it is cavitating due to insufficient fuel flow into the pump.

 

What pump are you running Scooper?

I wish I had known about the return line when I was putting the car together, I'm too lazy to do it now.

 

Yes it gets louder due to lower fuel level requiering it to work harder.If you install a sump on the bottom of the tank(making it the lowest point) it will all ways get fuel due to gravity.Also less fuel means less media to absorb the noise made by the pump(sound does carry through liquid).

 

OOPs I meant liquid absorbes sound.

 

I am using a Holley Blue...

 

Interesting idea on the return line.....my regulator has two outputs, one inlet. How would you plumb the return back into the tank?