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Cummins Returns as the Official Turbo Diesel of Ultimate Adventure 2020! #UA2020

Power, MPG, Durability, and Reliability are just a few things that come in that big wooden Cummins Crate!

Cummins returns as the official turbo diesel of ultimate adventure 2020.
Christian HazelAuthor, PhotographyHarry WagnerAuthor, Photography

It used to be the stuff of off-road fanatics' dreams.

"Man, I wish I could get a ready-to-run Cummins that would fit in my trail-sized 4x4 straight from the factory without having to scrounge old bread trucks and forklifts." Well, in 2017, Cummins granted that wish with its R2.8 Turbo Diesel crate engine. Inside the box is a ready-to-run four-cylinder Cummins turbodiesel displacing 2.8 liters and sporting a very conservative tune that allows 161 hp and 310 lb-ft.

And with the exception of an intercooler and intake ducting, it's ready to go down the road straight out of the crate. The wiring harness, ECU, throttle pedal, fuel pump, turbo, and starter are all attached. In fact, we've fired one of these engines up in the crate more times than once just by hooking up a battery and dropping the fuel pickup into a jug of diesel. It's really that easy.

This year marks the fourth consecutive Ultimate Adventure in which our official UA vehicle build will be powered by the plucky R2.8 Turbo Diesel. For UA2017, we got one of the very first R2.8 crate engines from the Beta program and installed it in the UACJ6D.

Stephen Sanders of Cummins checking calibration on the UACJ6D R2.8 beta engine.

That engine powered the '71 CJ-6 over UA, and has driven it from Arizona up through the high mountain passes of Colorado, from SoCal to Moab several times, all over the SoCal deserts, and beyond. Four years later, it's still going strong and hasn't missed a beat. For UA2018, we powered the Derange Rover with a production R2.8 Turbo Diesel and drove it all over the Northeast for that year's Ultimate Adventure.

The Derange Rover has gone to Moab, driven up to and done UA2019 in Alaska, and has made countless on- and off-road trips throughout the Southwest. And speaking of UA2019, everybody knows the Ultimate International, our 1964 Scout 800 that led Ultimate Adventure last year through the wilds of Alaska. After touring Alaska, parts of Canada, and the Pacific Northwest after UA2019 wrapped up, the Ultimate International is still going strong and will be on UA2020 this year, along with our official Ultimate Adventure vehicle of 2020, the UALRJ (Ultimate Adventure Long Range Jeep).

And yes, you guessed it; we're proudly plunking an R2.8 between the frame rails of the UALRJ to lead the show this year. Make sure you're keeping your eyes on social media for the#UA2020 hashtag to catch the latest on what the UA gang is up to, and check fourwheeler.com for updates as the event draws closer!

Cummins R2.8 powering the UACJ6D on Ultimate Adventure 2017.
The UACJ6D with Cummins R2.8 power on Ultimate Adventure 2017.
Fred Williams and the Cummins-powered Tube Sock TJ on Ultimate Adventure 2017.
The Cummins R2.8-powered Derange Rover on Ultimate Adventure 2018.
Fred Williams and the Ultimate Tug Truck with Cummins 6BT engine on UA2019 in Alaska.
Cummins R2.8-powered Ultimate International 1964 Scout 800 on Ultimate Adventure 2019 in Alaska.
The Cummins R2.8-powered Ultimate International 1964 Scout 800 on Ultimate Adventure 2019 in Alaska.