How Dodge Packed 707 HP Into The Hellcat Without Destroying It
The 2015 Dodge Challenger SRT Hellcat is probably the most highly effective production automotive a major American automaker has ever produced. The supercharged 6.2-liter HEMI V8 engine delivers a ludicrous 707 horsepower. To place that in perspective, an Oshkosh M1070A1 heavy gear transporter has 700 horsepower, and it tows 70-ton tanks round battlefields for a dwelling. That’s manner more than any passenger automobile needs, and it is way greater than the typical automobile is built to deal with.
For Dodge engineers, stuffing an enormous engine beneath the hood was the simple half. The true work was in taking a automobile that’s used to providing 470 hp and ensuring it might handle almost double that. They had to beef up key elements of the engine, exhaust, and transmission to withstand a beating. That they had to deal with federally mandated noise limits. They usually had to find a manner to keep inexperienced drivers from destroying the Hellcat the moment they’re within five miles of anything tougher than a hay bale. In abstract, this automobile is an exercise in batshit crazy engineering.
Dodge needed the Hellcat to have the ability to run on a observe for 20 minutes without shedding any of its super powers (working the quarter mile in underneath 11 seconds and a top velocity of 199 mph), even in a hundred degree weather. Problem is, the automobile’s V8 makes an entire lot of heat, which is bad for performance. To cope, Dodge threw in two heat exchangers, on prime of the traditional engine cooling system. Those use coolant to drop the air coming out of the supercharger from 250 degrees to 140 degrees.
The engineering workforce began with a naturally aspirated 6.4-liter Apache engine used in the 2014 Challenger. To go from 470 hp to 707 hp, the engine requires a lot more oxygen. So the group added a supercharger that can push 30,000 liters of air—enough to fill a medium sized office—into the engine in a single minute.
With all the give attention to horsepower, it is simple to forget about torque, the helpful twisting drive that throws you again if you stomp on the gasoline. In terms of performance, more torque is extra better. With 650 pound-ft, the lana del rey black t shirt sale Hellcat doesn’t disappoint. That’s nice for you, however all that twisting is hell on the transmission. So Dodge went for a new 8-pace automated that’s been upgraded to handle the drive. It’s additionally offering a 6-velocity handbook, which it grabbed from a Viper and fitted with an exterior oil cooler and a stronger twin-disc clutch to handle the extra energy. (Auto lovers and purists will seemingly choose the guide, however it’s worth noting that thanks to 160 millisecond shift occasions, the automated provides better acceleration.) To scale back twisting on the chassis throughout drag starts, the automotive has a brand new rear axle with four mounting points somewhat than three.
Admitting that stopping the automotive will even be obligatory, Dodge gave the Hellcat 15.4-inch Brembo brakes, the most important ever fitted on a Chrysler group car (that features vehicles from Fiat, Alfa Romeo, Jeep, Mopar, Ram, Dodge, and Chrysler).
Noise Limits and Other Concerns
Possession of a 707-horsepower car leads to some non-technical related questions. The first: Will the noise from this thing put me in violation of federal law To make sure the reply is “no,” Dodge tuned the Hellcat to lana del rey black t shirt sale be comparatively quiet in regular drive mode and respect noise limits. Preserving the Hellcat quiet enough was “quite a substantial challenge,” says Chris Cowland, an engineer with Dodge’s SRT group. But don’t fear, the automobile feels like Thor’s angrier older brother when the engine is de facto caned in observe mode.
The second, and more important lana del rey black t shirt sale question: How do I be sure that my hooligan friends and/or teenage kids don’t send it right into a wall the second I allow them to take a flip behind the wheel The reply: Two keys. The Hellcat comes with a purple key, which allows maximum balls-to-the-wall efficiency. The black one limits the engine to “solely” 500 horsepower. There’s also a valet mode that forces the automated transmission to begin only in second gear and upshift quicker than it usually does, disables the paddle shifters, and prevents disabling of the traction and stability management programs. All that retains the Hellcat a bit more restrained and manageable, and hopefully out of trouble.
With regards to uncooked energy, few cars in manufacturing at the moment prime the Hellcat, and most of them price tons of of hundreds of dollars, if not over one million. That’s why have been’ so excited to see that pumped up Challenger could be had for just $60,000 (that’s $84.86/horsepower, for those counting). The Hellcat might not beat the Porsche 918 supercar round Monza, however it’s actually affordable, it’s received far more energy than you’ll ever want, and it has all of the components to make it work.