Fuel Pump

[JimiD]

Hi guys,
starting to install my fuel line i have an IRS set up and i can't install it the way the book says. What did others do? Also i went with an exterior fuel pump that says best if installed lower than the fuel line pickup that would make it lower than the tank and that can't be right. Does anyone have pic's of a pump system set up so i can get some ideas? I can fab any sheetmetal part i need just need some visual aids.

thanks Jim

[PhoneGUy]

I had a similar issue and after much thought and debate I went with an in tank fuel pump. Not only does it solve the problem of placement below the fuel sender (or whatever it is called) it also takes care of the noise problem that external pumps have. I was also worried about rocks, etc coming into play.

Good luck with resolving your issue.

[ArcticSnake]

I put a bracket behind the passenger side rear bulkhead and mounted my aeromotive. Never had a problem drawing fuel.....close to level with the middle of the tank.

http://i325.photobucket.com/albums/k385/schubertdr/My%20Cobra%20Project/IMG_6083-1.jpg

http://i325.photobucket.com/albums/k385/schubertdr/My%20Cobra%20Project/IMG_6030.jpg

[Bob Cowan]

I'm using an A1000 pump and two Summit Racing fuel filters. The filers screw into the ends of the pump, making one solid unit. I welded a small bracket to the X brace, and bolted the pump and filters to the front of that, just behind the differential. In theory, the pump should be lower than the bottom of the fuel tank. But this seems to work just fine.

[JimiD]

thanks guys,
Bob do you have a pic?

thanks
jim

[willy]

I did not think about it being below the fuel level sould check, I read that you can have it above the bottom of the fuel tank ( even higher than Articsnakes ) mine is about level with the top of the tank and have had no problems with fuel

[Bob Cowan]

This is the assembly I used during the initial build
http://i13.photobucket.com/albums/a256/bobcowan/smallFuelPump.jpg

Sine then, one of the filter housing cracked, and I replaced them both with these
http://i13.photobucket.com/albums/a256/bobcowan/smallSUMfuelfilter.jpg


The is looking through the trunk floor, from the cockpit, and before the differential was installed
http://i13.photobucket.com/albums/a256/bobcowan/smallFuelpump2.jpg

And this is looking at it from the passenger side.
http://i13.photobucket.com/albums/a256/bobcowan/smallFuelpump1.jpg

[efnfast]

A lot of electric pumps function best/only function when below the tank level. (if they can be mounted above tank level they usually inform you as such) .... there are plenty of places below the tank to mount it (e.g., behind the seats off the 4'' round tube area ... just keep it above the tubes and you're fine)

[Broadwaydan]

I had the same situation with mine, and did similar to some of the comments listed below. I fab'd a mounting plate out of 1/8" steel and put it alongside the 4" round frame just back of the passenger floor plate. Since it was fairly long and cantilevered at one end, I decided to also make a sheet metal bracket for the other end to attach it to the chassis. That way the pump mounting plate will not "bounce". I also ended up having to re-drill and mount the pump a second time at the far end of the mounting plate. When I tried to attach the fuel line fitting to the pump output there was interference from the control arm fastener. Once I moved the pump back, no problem. I am at about the same point as you, so have not installed the engine to verify everything. However, based on the other comments I have read I am pretty confident this will work fine. I have attached a link for you to see photos of the fuel system work I did. Hope this helps.

http://gallery.roadster.mightypirates.com/fuel-system/

Dan

[JimiD]

My mount.
7076

pump on
7077

7078

[JimiD]

I was reading the electrical manual and it shows a hookup for the fuel pump that goes through the inertia switch. Does anyone know if I need to put a relay system in for the pump and not use the factory wiring that came with the complete kit?

jim

[Bob Cowan]

It depends on what pump you're using, and how much power it needs.

My A1000 draws a fair amount of power. Based on max power draw and distance, I needed a minimum of 14g wire, and 12g would have been better. So I used 10g. Probably didn't need something that big, but it made me feel better.

I started out using the inertia switch. Seems like a good piece of safety equipment. For a m ild mannered street car, it probably is. But, if I launched the car hard, it would trip the switch and the engine would die. So I dumped the switch and the additional wiring.

[JimiD]

thanks Bob I'll check out the pump today. I know the wires stubbed out of the pump are only about 16 ga but i'll check.

jim

[Richard Oben]

This is just my opinion, but I would put the pump in the tank and forget it, much easier, no muss no fuss, and more important than anything else QUIETER. HTH, Richard.

[JimiD]

Draws less than three amps. All good.

[Mesa Mike]

Most mfg of external fuel pumps say the pump should be mounged below the bottom of the tank. I fabed a mount and put mine on the vertical 2X2 just above the 4" tube in front of the back tire. workes good.

[stroked 6t5]

Most mfg of external fuel pumps say the pump should be mounged below the bottom of the tank. I fabed a mount and put mine on the vertical 2X2 just above the 4" tube in front of the back tire. workes good.

Mike,
That sounds exactly what I was planning to do. Is the pump mounted in a vertical position? Would you have any photos to share? Many thanx.
Regards,
Andy