Join Date: Jul 2006
Location: Northfield, Illinois
Some depends on how you will use the car. My Ausca Alfa has only and electric pump. Ferrari, years ago, realized fuel evaporates from hot Webers, and considerable cranking may be necessary to fill the 3 or more float bowls. They added "Autoflux", an electric pump you turned on to fill the Webers before starting, or used WITH the mechanical pump on very hot days to avoid "vapor-lock" issues.
For a non-race Alfa car, an electric-ONLY pump is wired into the ignition switch. Ignition "on" pump runs. If you like the mechanical pump, BUT don't want to kill your starter cranking to fill float bowls, add an additional switch that allows the electric pump to be turned on and off like Ferrari, prior to starting, or in hot driving IF there are heat related fuel delivery issues.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Illinois SNO Alfa Chapter Director
Illinois SNO Ferrari Chapter Director
and sometimes, CONFUSED AND INCORRECT, but Larry helps me out.
Illinois Chapter Director AND Charter Member of THE CONFUSED AND INCORRECT