How is your FASS regulated though. do you have a check ball valve in line to restrict its return flow, or is it soley on the ball/spring?
What i was meaning by not making more pressure than the FASS will supply, was that if your FASS is regulated at say, 55 psi
, with the spring/ball, you will not acheive a higher pressure on the motor by cranking down the regulator there to say 65 psi
, as it will just make more fluid bypass at the FASS.
Now if you have a check ball valve in line at the fass in its return to the tank, and you have the flow limited to just a trickle, then its actual pressure regulator is rendered useless and you would make just about as much pressure as you want with the regulator on the motor.
or were you saying you have a regulator inline on the return of your FASS?
We have unfortuneately had a lot of failures on the high pressure FASS's on the fords. The few that have not failed were on trucks with kind of aftermarket regulator on the motor, or with the aftermarket regulator cranked all the way down, or closed, thus allowing the FASS to solely regulate the pressure. I have just kind of felt its something other than just the high pressure killing the FASS's, as we had one of the very first high pressure ones available even before they were made for the fords. It was a 55 psi
unit that would actually produce 61-63 psi
on a cr
dodge back in 05, and it has never skipped a beat. this is why i think theres some kind of slight pulsation occuring on the 7.3s, in particular, that is causing problems. Just a hunch like i said, nothing concrete.