After a meeting with a representative from Cummins, we concocted a harebrained idea to put a small diesel in our Wrangler and attempt to drive it underwater. Yes, underwater, like 12 feet underwater. That fever dream turned into reality and can also be seen on Dirt Every Day, but even cooler is the little R2.8 that we got to do research and development testing for Cummins with. The R2.8 is the first in Cummins’ new crate engine initiative that will hopefully eventually include inline-six and V-8 options as well. As of now we have Version 2 of the crate engine in the Jeep. The underwater engine came out just fine, but the Cummins folks wanted us to upgrade to a version nearly identical to what they will sell. Because of this, some of our photos will show different engines, but the tech is the same, and we will concentrate on the latest version if possible.