So did you get this thing started and running yet? I'd love to see / hear a video of one.
I'm starting into the fuel system on mine. On mine the fuel filter head and distribution assembly is missing. The correct filter head I have been unable to source so I found a stock Cummins head on ebay but its just an In/Out filter head, heater, filter, and water separator assembly. Its down to 2 micron though so its a snug fit. I believe that I am going to make my own fuel return block though.
The fuel system goes as follows and correct me if I am wrong.
Tank to ECM,
ECM to low pressure pump
From low pressure pump to filter assembly
From filter to high pressure pump,
From high pressure pump to rail.
There are return lines from... the high pressure pump and the fuel rail... or should there be a return line from the filter head too? I am thinking not because the low pressure "Gear pump" on the CP3 puts out 73 psi plus and the high pressure indicates that there should be about 50 psi feeding the inlet on its side... Unless I put an adjustable relieve valve on the fuel return to control the pressure coming out of the gear pump... is that something that is part of the stock filter head?
I looked into an airdog system but I am unsure if I need that $600 plus component and that if the Fleetguard filter is sufficient enough to de-air...