Reg ret is out dated unless you can't rid of the air. Fass and Airdog only get about 80% out. You can build a sweet one like mine for a little over 100.00 and its close to 100%. Its in my garage. You don't need the hutch and harpoon with either a in tank or fram mount Carter pusher pump. I use walbro pumps and replace the factory reg with a exturnal one. Keep the heads pressurized at 105psi. you lose about 25% engine noise. It's sweet
You can do a 4 line feed without issue, so long as you have an AirDog or Fass, you still need a return in the system somewhere, be it at the pump or at the motor.Well Brucie, They don't know how to get the air out yet. I don't use a return either except to send air bubbles back. I know all the big truck engines have upped the volume of there returns for that purpose. I did my C-15 625hp cat with a little bigger version. It quiets the noise about 25%. I know a lot of people who don't run them and make big power and have $700 more in there pocket. Rather than push the fuel around and out, Clean it up and raise the pressure, nobody starves.
Sounds like a good plan... I run 62psi on my 250/200 hybrids...:hehe: 105PSI on what kind of injectors? B codes?
I'm going to be doing a 5/8" fuel pickup tube, 5/8" to a prefilter/water sep., 3/8" to dual stock pumps, into a post high efficiency filter, 1/2" to a regulated return in the heads which allows any air to FLOW PAST THE INJECTORS, to a regulator, then back to the tank so you keep a constant 65-75 PSI at the injectors. Fuel bowl delete of course.