Electric fuel pump.

hudsonsplasher1

I'm thinking of installing an electric fuel pump on my 37 Terraplane to eliminate vapor lock.  What's the best way to install? Do I need to eliminate the mechanical pump, or push the gas through on it's way to the carb? Any suggestions on name of pump.  Any suggestions much appreciated.

Gene Birdsall.

Kdancy

http://www.summitracing.com/parts/ATX-E8011/
6v pump
Any electric pump should be mounted as close to tank outlet as possible.
I have another brand 12v pump mounted on a 58 Packard Hawk that is just used for a prime pump when
the car sets up for several weeks. After starting and running, I turn the electric pump off and the mechanical pump pulls thru the electric pump. With a rotory type, I don't think it will allow you to "pull thru" with the pump off.

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charles4d

I put a bypass line on so when not in use it will work off the pump on the engine.
Use the electric for priming

charles4d

I put a bypass line on so when not in use it will work off the pump on the engine.
Use the electric for priming

charles4d

Fuel won't pass thru the pump when it's not running

Kdancy

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Fuel won't pass thru the pump when it's not running

Charles, if you have the proper electric pump, you can turn it off after priming the system and the mechanical pump will pull fuel thru the electric pump. You don't need a by-pass line. This is how the 58 PH is hooked up and running. I only use the electric pump after setting for long periods, to prime and then turn it off and let the mechanical pump work, no bypass line installed.
A Rotary vane type pump will not "flow thru", so in that case you would need the by-pass line.

Frankvintagefullflowcom

Splash,

Keep in mind that a failure of the mechanical pump's diaphragm and subsequent use of the electric may allow the electric to pump fuel into the crankcase......bad deal, and those Splashers (Splashies, if you are down under) cost a lot to rebuild, assuming enough of it survives the explosion.  

F

charles4d

Always good to know this

Per

Hudsonsplasher1,

I have two sources coming to the carburetor in my '35 Hudson.  One is the regular system.   The second is from a small container of gas (nice and fresh).  It is pumped by a Honda fuel pump (Accord, 1976-83) which is powered by a 12 volt battery.  I use the electric pump to fill the carburetor, and turn it off as soon as the engine is running.

Per