There are plenty of good reasons for installing an electric fuel pump but choosing the proper one is very important and here's why:
At full-open throttle a motor requires about 1/2 lbs fuel every hour per h.p. A gallon of gasoline weights approx. 6 lbs. So if your engine makes 50 h.p. it will need a pump that supplies fuel at 8 gph. ( 50 x 1/2 ) = 25 lbs per hour then 25 divided by 6 = 8.1 gph.
An Anglia 100E/105E needs only 1.25 - 2.0 per sq inch of fuel pressure for its Solex carb to function properly.
Cortina 1200 / 1500 / 1600 requires 1.25 - 2.5 psi.
Cortina GT / Lotus ; 2.75 - 4.25 psi.
Any more than 8 psi can flood the carb. Installing an electric fuel pump of 150 gph @ 6-8 psi will need a fuel regulator to reduce the psi.
Since pressure ( psi ) and volume ( gph ) are inversely proportional "real world" flow rates will vary depending on driving conditions.
For Authenticity and preventive maintenance the original fuel pump can be left on and an in-line electric pump can be installed near the fuel tank with an on/off switch.
