There was a discussion here not long ago about setting up the fuel system for a dual carbed blower . I think it was Mike Tkach that mentioned rigging an adjustable fuel pressure regulating valve that will return unused fuel back to the tank . Is this the fuel return check valve that was mentioned ? It can be shimmed to the correct pressure . http://www.rbssuperchargers.com/Prod...-0040&pID=9144

i can,t take credit for that but it looks like a nice deal.i don,t see why it would not work.

why not just used a regulator that uses a return ? I use a aeromotive one that is adjustable and boost referenced

as do i.

If that`s a -6AN line coming in then I`d say thast a bit small.
I have a -10AN into a Y then -6AN feeding each carb.

At the end there that is not the regulator we discussed, thats just a check valve.
Instead of that brass check valve you`d need a regulator and a line back to the tank.

Pretty sure that set up is for a self regulated fuel pump. They use the check valve to return any extra pressure back to the tank? weird

Ok guys , thanks .

we used a fuel log similar to that along time ago,it used a spring and a pill(just a fuel restriction) to hold pressure and return the rest to the tank.
replaces that set up for an aeromotive regulator,same return to the tank.

Not sure how much power you are planning to make, but the fuel pump used on the mercury 800sc/900sc, is what I've been running. Its a simple Holley 6 valve pump self regulated at 7psi. It fed the 540ci, brodix headed, solid roller cammed, 10-71 with twin 1050 dominator setup making 900+HP to 6000RPM.. No regulator or return line. Teague sells these pumps for 180 bucks.

With that being said, that same pump, with the higher pressure spring that can make 14-15psi, coupled to a return style regulator set to 7psi, is a great setup.

http://teaguecustommarine.com/em0011...fuel-pump.html

of course if you are using an electric pump, than thats a different story.

Either way, -10 line feeding the pump, -8 from pump to carb feed lines works for most anything an 8-71 can accomplish on pump gas.

You can buy just the valve from Enderle for around $40

Gen VI block so electric pump is necessary . I won't skimp on fuel line size for sure . Thank you for your time guys .