Chris, Yes, that is what happens in the pump with the outlet restrictor. There are two oneway valves in the pump, and the pressure in the pump does not allow more fuel to be drawn in than is passed out.... 1937 ford pumps worked well ! :) The concern is excess flow to the header tank exceeds the overflow lines capacity; and causes the fuel to pass out thru the header tank cap.....quite dangerous to have gas flowing out the header and into the engine, and cockpit...... So the 1/16" restrictor limits the punp outlet to about 7 gal.hr, (somewhat in excess of the avg fuel burn of 5 gal/hr), and within the overflow lines capacity back to the wing tanks. Harry
--- On Wed, 4/29/09, Chris <[email protected]> wrote: From: Chris <[email protected]> Subject: [ercoupe-tech] Fuel Pump Restrictor To: [email protected] Date: Wednesday, April 29, 2009, 2:47 PM On the restriction of the fuel pump outlet. It seems to me that it would be more efficient to let the fuel pump free run without the restrictor and let part of the pressure bypass back to the inlet. Wouldn’t that take some of the load off the pump? Am I missing something here? Chris 99674 in restoration ‘--o-O-o--’
