Westen Champlin drops a Cummins Diesel into a $500,000 Rolls-Royce Phantom then turns America's worst road into a walk in the park

In another daring project, Westen Champlin put a Cummins Diesel inside a $500,000 Rolls-Royce Phantom.

As if that wasn’t enough, he then took it for a spin on America’s worst road.

But would a souped-up Phantom be able to take it on?

There was only one way to find out, and Westen Champlin was the perfect candidate for such an ‘experiment’.

How Westen Champlin tested the Rolls-Royce Phantom with a Cummins Diesel

If there’s one thing you can count on with Westen Champlin, it’s that he’ll do just about anything.

With that in mind, you may recall that he performed a Cummins swap on a $500,000 Rolls-Royce Phantom – all because his video got one like.

The engine in question is a 5.9-liter Cummins diesel turbo from a 2006 Dodge Ram pick-up.

Fast forward to now, and the project is essentially done.

Well, we say done, there were still some issues that needed to be ironed out – namely the rough shape of the interior and the warnings on the dashboard.

To test the build’s reliability, Champlin and his team decided to take it on a 140 mile journey to Oklahoma to attend a Chase Matthews concert.

Champlin described the state’s roads as the ‘roughest roads in the country’.

But he certainly didn’t feel that when he was driving along in his Phantom.

“You wouldn’t know it [driving this car], it’s like a cloud,” he commented.

Admittedly, Champlin has also driven a mini truck up to the northern-most point of Alaska, so he’s used to drives that would otherwise be intimidating.

All in all, the journey was completed with no breakdowns.

And even better, country-rapper Chase Matthews was impressed with their work.

This YouTuber is always taking on big challenges

Champlin is never one to shrink away from a test of skill.

After all, over his career as a YouTuber, he’s worked with a wrecked rally car, and a Dodge Hellcat.

Perhaps his finest moment was taking an abandoned cop car and turning it into the ‘world’s fastest’.

There’s no telling what he’ll take on next.

But if there’s one rule of thumb with Champlin, it’s to expect the unexpected.

We were curious what specialists would make of this build, so reached out to the Rolls-Royce and Bentley Specialist Assocation.

“At the RRBSA, we see some unusual things, but a Cummins 5.9L diesel engine in a Rolls-Royce Phantom is certainly among the more memorable – although it’s not quite in keeping with the original Rolls-Royce design brief of silent, effortless refinement,” Ian Pinder, the chairman of the RRBSA, said.

“As an Association, we focus on preserving these cars as they were intended, where their engineering truly excels – but making something like this actually run and drive is undeniably impressive.

“We’ll admire it… from a safe and respectful distance –  and preferably not within earshot of it.”