Climate Change's Mechanical Injected 12-Valve Triple Turbo 6.7L Cummins Engine - Engine Builder Magazine

Climate Change’s Mechanical Injected 12-Valve Triple Turbo 6.7L Cummins Engine

Do you believe in Climate Change? Regardless of your scientific standpoint, we can all agree that this 2000 Dodge Dakota Pro Mod truck named Climate Change featuring a mechanical injected 12-valve triple turbo 6.7L Cummins engine is absolutely awesome! The guys at Warren County Diesel and Scheid Diesel are aiming to make this the fastest diesel truck on Earth.

Diesel of the Week is presented by

The Royalty family knows the diesel industry like the back of their hand. Steve Royalty, his father Merit, and son Tyler of Warren County Diesel have been engrossed in diesel motorsports for years.

Steve first got into bracket racing in 1997 in the Super Pro delay-box competition, before moving up to dragster level racing and eventually into the Outlaw Diesel Super Series. Before him, Merit Royalty was a top contender in the 5,000-lb. and 7,000-lb. Modified sled-pulling classes back in the ‘70s and ‘80s. Over five decades, the family has made a formidable name for themselves in the competitive diesel scene.

Climate Change is a 2000 Dodge Dakota with a mechanical injected 12-valve 6.7L Cummins and triple turbos.

During the week, Warren County Diesel provides a variety of automotive and fleet repair services in Franklin, OH. The shop uses high-tech diagnostic equipment and employs certified, expert auto service and repair technicians who have years of experience performing everything from oil changes to a complete engine overhaul. The Royalty family has owned the shop for more than 40 years.

On the weekends, the team goes straight to the track to race their drag truck, which was a three-year project taken on by the family. The monster build has gained a load of attention in the past few years, not only for its hyper-fast drag times, but for its comically on-the-nose name and one-of-a-kind appearance that is sure to evoke a few double takes.

“Climate Change,” the truck in question, is a 2000 model body Dodge Dakota Pro-Mod truck powered by a mechanically injected triple-turbo 6.7L Cummins engine that belts out upwards of 2,500 horsepower, more than 3,000 lb.-ft. of torque, and an even crazier amount of smoke.

Behind the steering wheel is Steve, who races the truck in the ODSS Pro Mod class, local Quick 16 races and No Prep races.

Despite challenges along the way and a heap of broken parts, Royalty’s Climate Change is capable of running times like a 4.54 at 162 mph in the 1/8th-mile, which definitely gets him noticed by the masses. He was even contacted by the producers of Street Outlaws and will hopefully be seen racing on your TV screen soon.

“Our ultimate goal is to get into the 3s in the 1/8th-mile at around 200 mph and have one of the fastest diesel trucks on Earth,” Royalty says. “We’ll get there eventually.”

Of course, with any powerful machine, a master builder stands behind it. This billet aluminum block 6.7L Cummins engine was built by Scheid Diesel and features several creative upgrades that work to launch the truck down the drag strip such as a Scheid modified Cummins crankshaft, Diamond pistons and R&R/Scheid Diesel connecting rods. The mill is bored .030” over, which makes the engine 401 cubic inches and technically a 6.9L with a 14.2:1 compression ratio.

The valvetrain features a Scheid/COMP solid roller camshaft with Cook and Sons valvetrain components, titanium intake valves and Inconel exhaust valves in a cast steel cylinder head. The engine has been blueprinted hundreds of times in order to make a bulletproof build.

The air and fuel setups are arguably the most head-turning parts of the build. The triple turbochargers are setup in a unique way, with two Forced Inductions 82mm atmospheric turbos feeding into a larger, custom 105mm turbo that is perched right next to Royalty in the cockpit. This would be illegal in the NHRA, but not for ODSS. With the 170 lbs. of boost being produced, engine stability has always been a priority in the build.

“It’s taken a lot of testing and trial and error due to the horsepower and torque of this thing,” Royalty says. “It’s not particularly light either. At 3,300 lbs. it’s relatively heavy for what it is.”

A ballistic blanket and scatter shield in the cockpit serve as safety measures, yet it’s still dangerous. Currently, Royalty is working to move the third turbo to a different location and replacing it with a 114mm Harts turbo.
“We’re in the process of relocating the bigger turbo, it’s going to be centered up directly above the rear axle and then our chargers are going to be moved back and down. It’s going to make it safer and a little bit lighter by distributing some more weight to the back. We’re also going to be taking the wing off the cab.”

A DSR gear-driven fuel pump feeds a 14mm injection pump, which then delivers the high-pressure fuel through Scheid triple-feed injectors to the custom fabricated intake manifold. A nitrous oxide and water-methanol combination injection keep the temperatures in check. The engine also features a Jones Racing dry sump oil pump and custom dry sump pan and tank.

The Royalty family’s build is ongoing, as Steve and the gang are always looking for ways to improve their times and get closer to building the “fastest diesel truck on Earth.” Their legacy in diesel racing and pulling will no doubt continue on for years.

Diesel of the Week is sponsored by AMSOIL. If you have an engine you’d like to highlight in this series, please email Engine Builder Editor Greg Jones at [email protected].

You May Also Like

Twin-Turbo 5.9L Cummins-Powered Lamborghini

The last thing that comes to mind when thinking of a Lamborghini is a diesel engine, but that apparently wasn’t the case for the guys at 1 Way Diesel Performance…

In the world of performance engine building and racing, engine swaps have become commonplace – but every so often someone decides to do something crazy enough that it captures the attention of automotive fans everywhere. Some of the particularly odd, yet interesting, amalgamations happen when builders decide to swap a diesel engine into a more exotic sports car.

Compound Turbo 6.7L Cummins Engine

Many of the guys at the top of the diesel sled-pulling totem pole often use the 6.7L Cummins for their builds, both for its reliability and efficient power making potential. Michael Brown just finished up work on this Cummins that he’ll be using this year at events like King of the Street. Check it out!

Billet 6.0L Powerstroke Engine

Leave it to Jared Alderson and the guys at Kill Devil Diesel to build a kickass Powerstroke engine! This competition-level, billet aluminum 6.0L will be going under the hood of KC Turbo’s truck for the upcoming race season. Check it out!

Compound Turbo 6.7L Enforcer Engine

The popularity of D&J Precision Machine’s Enforcer series engine can’t be understated. We checked this one out at the 2022 PRI Show.

Coffman Starter 24-Valve 5.9L Cummins Engine

This 24-valve 5.9L Cummins is your average workhorse build for pulling trailers… until you learn about the Coffman-inspired starter James Crutcher built for this engine.

Other Posts

Supercharged 406 cid Small Block Chevy Engine

Owned by Scott Mueller since the 1980s, this 1934 Ford hot rod features a supercharged 406 cubic inch small block Chevy engine capable of 1,000 horsepower and low-8-second passes. Check it out!

Scott Mueller’s Supercharged 406 cid Small Block Chevy Engine

Scott Mueller is no drag-and-drive rookie. He’s been drag racing and daily driving his 1934 hot rod for a number of years. Helping him compete is a supercharged 406 cubic inch small block Chevy and we got the details during Sick Week 2023 at Gainesville Raceway. It’s our Engine of the Week. Related Articles –

Choate Engineering Performance’s 6.7L Powerstroke Engine

Choate Engineering Performance, located in Bolivar, TN, does a ton of diesel engine remanufacturing and custom engine building. We were recently visiting the shop and got the run down of Choate’s 6.7L Powerstroke build. It’s our Diesel of the Week! Related Articles – Intellectual Horsepower: Light & Medium Duty Diesel Replacement Parts – Why You

Turbocharged and Nitrous-Boosted 429 cid LSX Engine

It’s tough to beat the lines and looks of a Chevy Nova. Jason Sack’s 1969 Nova is certainly up there in terms of coolest-looking, and it doesn’t hurt that it has 2,200+ horsepower under the hood courtesy of a turbocharged and nitrous-boosted 429 cid LSX engine! See for yourself!