so what im thinking of is running a new supply line from the pump to the fpr. i have mallory 4309 fpr, from their run to the supply of the stock carb. have the stock return on the carb tee into the return of the fpr. and then run a new return line. is it possible or would i see some pressure issues?

 

Best bet is to cap off carb return line and use FPR return line.

 

ive found a couple threads saying that i can run it the way i mentioned. whats the advantage of just capping of the return line from the carb?

 

The 4309 is a return style, but the return comes from the fpr itself. The carb is a deadhead after the fpr. There is no way to bring a return back to the fpr. Plumb the bottom port of the fpr back to the stock hard line return, do not use the 'silver bullet'.

 

what do you mean no way to bring the return back? if you take the return from the carb and run a tee or a Y-block with the return of fpr. that would be bringing it back.

 

The return is internal to the fpr, period. If you try to tee a return from the carb anywhere, the fpr will not regulate properly.

Just do as told, you are trying to over think it. lol

 

YES SIR. ok so what do i use to cap off the return.

 

JB weld works good, just fill up the end of the tube with it. Or you could use a short piece of rubber hose with a plug in it.

 

Since it's fuel, I personally wouldn't feel safe with the JB. I use the short piece of hose and a bolt. If you are looking for neatness, take the supply line off the carb, cut the return short and weld in a plug.

Sir works occasionally. I've been up for 45 hours, suprised I'm not cranky.