Inside the 1,000 lb-ft 6.7L Cummins
As I said before, most of the changes were made to keep it clean(emissions wise) and cool at stock power levels while mated to emissions equipment. Although, there is no doubt Cummins is sandbagging ...
Forum Discussion
rhagfo wrote:
Well this answers the Injection Pump question!
Injection Pump: Bosch CP4.2 high-pressure fuel pump (29,000 psi)
I will assume that Cummins is satisfied that past issues have been corrected.
I posted this in another thread.
FYI, I found out what is different from the "updated" CP4 from the older failure prone one. Apparently it is longer stroke cam and does not have to work as hard(build up as much heat) as the the older one. It is also now technically called a CP4-27/2 meaning CP4 design, max 2,700 bar(39,000 psi), 2 piston. The 39,000 max psi is a lot more than the 29,000-30,000 psi the new 6.7L is utilizing.
