Originally Posted by yorkcounty
Do I even need the 1/2 line? Can I just leave the 1/2 to the pump and then go back to 3/8
yes you can use 3/8's for the return, the fuel moving in the line at all times will help tons, as the psi drops in the line (regulator to carb,) there will be no delay when the regulator opens flow to the carb..
as the column of fuel will be moving, remember as you run through the gears the fuel in the line wants to go backwards, adding to the load to the pump.. with it always moving forward (an item in motion stays in motion) when you need the fuel it'll be there..
make sure you didn't kill the pump with the deadhead regulator and no flow through the pump to cool it..
even after the return line, make sure you have 5-6 psi at carb at the top of every gear..