6v fuel pump wiring question
Posted by Joe Santana On 2011/10/23 10:56:36
After 2 vapor locks in Portland, Oregon, and having to crank and pump, or pour gas in the carb to get started after a few days sitting, I decided to install an electric fuel pump on the Duchess, 1940 160, to use on an intermittent basis.
Thanks to earlier threads that directed me to PAC's Technical Tips on the subject, I decided to follow the attached diagram for all the reasons covered in these technical articles and to keep the authentic look up top, with a couple of exceptions.
To find the parts needed in addition to the pump itself, an Airtex from Sacramento Vintage Ford, I called first and left work early Friday to collect the things I needed to install this weekend from places that are generally not open after 5pm and closed weekends. I'm talking about truck oil system and diesel fuel injection places. After making it to three places, I got a gauge and needle valve to control the pressure (you get a dumbfounded look when you ask for a pressure valve), some connecting pieces, pipe, clamps, and a fuel filter.
The check valves were large, so I added a fuel filter to serve that purpose. The point of highest pressure is between the 6v pump and the needle valve, so I used a brass connection there. Hose for the rest. With all the clamps I could have installed fuel injection.
So now comes the wiring. The tan wire goes to ground on a 1940 Packard with positive ground. I grounded it to the pump bracket which is attached to the frame with a bolt. Yes I'm getting to the question...
If I wire this to my starter switch, would that make sense, instead of installing yet another switch?
It's only when I'm starting the car that I need the electric fuel pump. I want it off when the engine is actually running. This would ensure I don't forget it because the starter switch is spring loaded. It makes sense to me, but that's what concerned me.
Attach file:
(52.44 KB)
(47.72 KB)
Thanks to earlier threads that directed me to PAC's Technical Tips on the subject, I decided to follow the attached diagram for all the reasons covered in these technical articles and to keep the authentic look up top, with a couple of exceptions.
To find the parts needed in addition to the pump itself, an Airtex from Sacramento Vintage Ford, I called first and left work early Friday to collect the things I needed to install this weekend from places that are generally not open after 5pm and closed weekends. I'm talking about truck oil system and diesel fuel injection places. After making it to three places, I got a gauge and needle valve to control the pressure (you get a dumbfounded look when you ask for a pressure valve), some connecting pieces, pipe, clamps, and a fuel filter.
The check valves were large, so I added a fuel filter to serve that purpose. The point of highest pressure is between the 6v pump and the needle valve, so I used a brass connection there. Hose for the rest. With all the clamps I could have installed fuel injection.
So now comes the wiring. The tan wire goes to ground on a 1940 Packard with positive ground. I grounded it to the pump bracket which is attached to the frame with a bolt. Yes I'm getting to the question...
If I wire this to my starter switch, would that make sense, instead of installing yet another switch?
It's only when I'm starting the car that I need the electric fuel pump. I want it off when the engine is actually running. This would ensure I don't forget it because the starter switch is spring loaded. It makes sense to me, but that's what concerned me.
Attach file:
(52.44 KB)
(47.72 KB)
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