The signature rolled coal exhaust display is all part of the pageantry. Unidentified Įdward O'Brien These pulls are popular competitions in the motorsports world where seriously souped up diesels compete to haul the heaviest payload. Coal-rolling has deep roots in truck pull contests. Nick Mott Okay, so I get what coal-rolling is, but why do people do it?Įdward O'Brien Yeah, first, a little history. These tweaks can run anywhere from a few hundred to a few thousand bucks. How much does it cost?Įdward O'Brien Yeah. Nick Mott That sounds like a bunch of work to get done. So all that exhaust is the result of diesel fuel not getting fully burned. Whatever the method, the goal is to dump more diesel into the engine than it can handle. There are lots of ways to get it done, including special switches, tuners or big old fuel injectors. Coal-rollers frequently pride themselves on driving some very high-end trucks.Įdward O'Brien Well, rolling-coal is the result of modifications made to newer diesel engines. Nick Mott So this is actually intentional? It's not just the result of like a junky old engine?Įdward O'Brien No, very intentional. I bring this to the table because the listener who submitted her question said she drives an electric car and she's been coal rolled and so have some of her friends on bicycles. Do you smoke?".Įdward O'Brien So if you missed that, after she confirms that, yep, she smokes, the driver, then stomps on his accelerator, peels out, leaving her covered head to toe in sooty black exhaust. They slowly pull up on a young woman walking along the road and. Bunch of young guys are in a diesel truck hauling a boat. There are zillions of coal-rolling videos on the internet, but here's a particularly popular one. What is it?Įdward O'Brien Well, if you've ever seen or experienced firsthand, a pickup pull alongside or in front of you and then belch out a huge cloud of black or gray exhaust - well, you've just been coal-rolled. So, coal-rolling sounds to me like pushing hunks of coal downhill or something. And yeah, this question comes to us from Flathead Valley listener Margaret Satchell, who asks, "What's the deal with coal-rolling?" Welcome back, Ed.Įdward O'Brien It is lovely to be here. Today, Montana Public Radio reporter Edward O'Brien joins us to talk about a topic that really grinds some people's gears. By Montanans, for Montana, this is the Big Why. We'll answer questions, large or small about anything under the Big Sky. This is a show about listener-powered reporting.
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Nick Mott Welcome to the Big Why, a series from Montana Public Radio where we find out what we can discover together.
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