Electric Fuel Pump

[russcc]

I believe if you check with Purolater in NY or Aircraft and Spruce you will find they make 6 volt versions.

 

[koates]

Hi russcc, As I stated previously, I have checked and can not find any 6 volt pumps made by PURALATOR/FACET. Aircraft and Spruce are suppliers only and don't list them either. Many years ago (twenty) Facet did supply a square block type 6 volt pump but I can not find them now. If you know better than please post all the details. Have you actually checked this out recently or just guessing ?? I have used a few of the AIRTEX pumps both 6 & 12 volts and have had no problems to date. Regards, Kevin.

 

[Joe/Ct]

The only problem I see with your method is, if the diaphragm fails, fuel will flow into the crank case... Not good unless you want to wash the bearings... I do agree with you when it comes to having a back up, that is why I carry a "known to be good" mechanical pump, in the vehicles I've converted to electric fuel pumps... Another reason for leaving the push rod in.

No personal experience but I recently bumped in to an old article by Walt Brewer. He ran an electric in series with the mechanical for many years but eventually changed his thinking to run the electric in parallel (to a tee between mech pump and carb). His reasons were that the electric was too much restriction, the mech pumps failed due to the series setup *, and the electric could pump fuel into the crankcase when the mech diaphragm failed. So, he recommended using the electric pump in parallel with the mechanical pump.


*Too much (-) pressure when the electric was off and/or too much (+) pressure when electric is on.

That's what I said in my previous post.....