Re: ELECTRIC FUEL PUMP

Posted by HH56 On 2020/1/12 15:58:39

Whichever pump you decide on take note of it's output pressure and try to keep it in the range of the mechanical pump specs. 40 mechanical pumps are rated 4 to 4 3/4psi output. Airtex has two 6v pumps that have both been successfully used on Packards and can be wired for either positive or negative ground. Both are solenoid type pumps which the mechanical pump can pull thru when the electric is off and both have 5/16 hose connections. They should be able to install anywhere inline without issues. The Napa pump may well be one of the Airtex models but if not, Airtex pumps are found at many parts stores as well as online.

The E8902 is rated at 2.5 to 4.5 psi and the E8011 at 5-9 psi. If you are mounting near the tank and will be pushing gas the distance up to and thru the mechanical pump as well as a filter before it reaches the carb then the 5-9psi pump will be satisfactory but if you are eliminating the mechanical or mounting near the carb then the smaller pressure pump might be better. Important thing with pressure is not have an output so great that the carb float valve will be unable to stop flow.

It is suggested the pump be supplied with a separately fused line and controlled by an on/off switch so the pump can be used only when needed.