Mechanical injection pump on common rail 6.7 Cummins

[lotzagoodstuff]

This engine is pretty over the top at 1000HP (reportedly very streetable) but I would like to see a stock rotating group with the Bosch H Pump and standalone mechanical controller. I would be interested in seeing what kind of performance and mileage could be had by eliminating all the complexity (read cost) of the high pressure common rail fuel system.

https://www.enginebuildermag.com/2026/06/compound-turbo-mechanical-injection-6-7l-cummins-engine/

 

[Black dawg]

Mechanical is always cool to me, simpler and dont need big power anyway.
Be interesting to see what his fuel system + conversion gear case cost. Maybe that pump is capable of way more? 472 is on the small side for 1k.
Doubtful it was less than what it cost to do the same with hpcr. Cool though.

 

[Black dawg]

Ok. I learned to read. The 82mm 472 is on the manifold. And a gt55 atmosphere. That is ready for some power

 

[lotzagoodstuff]

I appreciate all the cubic inch, stronger rods, and camshaft mods they did to support the four digit HP goal, I’m just wondering what they could do with a stock long block as it sounds like the pump is nearly bolt on, and the controller is relatively simple/cheap. Kind of a “the engine they should have built” kind of deal.

 

[Black dawg]

Stock block will handle that power, but from what I understand, better rods are probably needed if you are really going to use that power often, and for longer durations. and commonrail is not hard to get to that point either.