im wanting to put a cummins in a pulling tractor and i was wondering if any one knew how a rotor pump or inline p7100 pump motor would run with out the turbo and if i would have to put flat top pistons in it to make it run properly
I dont think you will get a cummins to run good without the turbo. I would look into a older ford 6.9 or 7.3 naturally aspirated diesel, if you can run a V8.