Ahhhh.. vegginpsd, you just had to open a whole new can of worms, eh?
Well, since you did, I'll start barraging you with questions. Your idea is, of course, brilliant. I checked out tubular's page with his install because I think that is what he did. I suppose it's a bit different on my OBS than his '01, but I get the picture.
So, I currently use a 6 way switching valve. In the setup you suggest, that would go. I get the check valves part, but how would I manage the return? What I do right now is loop the return on veg and send it back to the d2 tank on d2. Return to veg isn't an option for me (welded that shut on the underbelly tank). I assume the engine just has one return outlet (not a second "service" one to tap into)?Get rid of the valves. The raptor has a built in regulator. Set it to 65. The SD fuel bowl has its regulator built in. Return the D2 if needed to the fuel line PRE_PUMP.
So, would I need to take out the 6 way and put in different solenoids that loop the return while on veg and send it back to the tank on d2? No valves needed. Fuel sustem dead headed in heads.
Thanks for the pump suggestion. A thought: fi the pump is $115.00 or so and a regulator is 100 -150, why not just buy another raptor or a fass with a built in regulator? Seems like about the same about of $$ for a better pump. THe raptor has a regulator.
Man, it's remarkable how quickly these projects expand.