Easiest, most popular engine to work on:

14L series 60 is the easiest engine. I have changed injectors, turbo, egr and vpod-s roadside...

 

@OLDSKOOLERnWV

What's that in? I know it's not in the truck on your avatar, unless you are going pre 2000 exempt paper log route

 

Well, actually it is the truck in my avatar . A 1995 W900L Glider. Originally ordered and bought new by Sheppard Enterprise in Pennsylvania in 1994. They still have all the info on the truck, including the serial # of the original engine they installed! a 1981 BC Cummins which I have here. 2nd owner was Kellar Farms in Gettysburg. After the engine locked up they parked it for over a year until the 3rd owner bought it and took it to Virginia. His plans fell through and he posted it on the computer for sale with a spare engine, which is in it. Originally a 315 I changed from Low Flow to High Flow, and built back as a 400 using 3 different CPL #'s. I just like older things what can I say . It is my bread and butter, not a toy by no means. It works every week just as all the new trucks do. And it's 100% payed for , I rebuilt every inch of the rear suspension as well as all the brakes, right down to the S-cams &bushings, slack adjusters, brake chambers, rubber brake lines, all of it. Then all new wheel bearings & seals. Older but solid, that's what I wanted. Now just wait until I get my Transtar done with the 8V92TA .... @"semi" retired probably want to run a few loads with it .

 

I can kinda understand what your try say there, but actually E models, c15, 60 series (old and new) n14 and Big Cams are all considers common rail fuel systems. The heads all have a rifle drilling though out the cylinder head and all six injectors use that same fuel galley. If you were to take 1 injector out, none of the other injectors could build fuel pressure because fuel would rush out of the common link between them.

Something that does have a similar common rail system using like what your explaining in my opiniom, that usrs super high psi pump for common rail like on the new powerstroke, dodge Cummins, etc ect....would be heui system that uses a high pressure oil pump to actuate the injectors instead of a cam lobe. T444E (7.3 powerstroke) and DT466 and 530 come to mind also.

 

Well the 3406A was the original 3406. Prechamber head on the early ones. Later ones were direct injected and many of the prechamber ones were eventually retrofitted with direct injection heads. The B's had a different fuel system for sure, not sure what else. I believe the C's had wider crank journals and some had the PEEC pump which I think was an electronically controlled mechanical pump (someone more knowledgeable will probably shed some more light on that). After the C was the E, which was fully electronic. After the E was the C-15/C-16.

 

Not trying to be argumentive but while there may be a common fuel passage in the head, its still not technically a common rail fuel system since its using electronic unit injectors and a cam lobe to inject the fuel.

Common rail fuel systems actually have a fuel manifold (rail) that is charged to like 20k psi or higher by a high pressure fuel pump. External lines link the rail with each injector. When its time to inject, the ECM triggers a piezoelectric solenoid in the injector, which opens the nozzle and high pressure fuel flows from the rail and through the injector. That's the big reason why you never crack injector lines on these engines to bleed them. Pressure is just too high compared to older systems like port and helix.

Common rail - Wikipedia

 

Nice! My dad had a 1979 tran star with a shiny 290, he sold it and got a 1985 9370 Eagle with a Big Cam 3, all he did was turn the fuel up 10 percent and that truck ran so good. After he sold it he worked for Roadway for 25 years, and now he retired from there and is an O/O again. I bet he wishes he still had that 9370 now with Elogs coming up. He's got a 2007 T600 with an Isx and an 18 speed with a 120 inch sleeper, we've modded it somewhat and it does good on fuel. Gotta get this day started, be careful out there.

 

I remember Dad talking about one version of the DT466, used pressurized engine oil to help fire the injectors. When replacing any Injector that oil rail had to be drained, if not soon as the Injector was removed all the oil in it ran into that cylinder. Needless to say what happened when you try to start the engine... yep, hydrostatic lock! Adding a bent connecting rod to your list of problems. Be safe out there, and enjoy that new ride!