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Dodge Demon makes so much torque, it needs stronger driveline parts

Torque is a lovely thing, a sweet and wonderful force that twists and pulls and can help propel a two-ton metal box forward at comical speeds. Torque is also fickle and will bend and break those same metal parts without a second thought, which is why the new Dodge Demon is compensating for its increased torque with some new re-engineered and reinforced parts. And there's software intended to combat wheel hop, which one of the most dramatic ways torque can break stuff. Week 8's video, "Race-hardened Parts," gives a hint towards what all these new parts can do. While we still don't know how much torque the Demon will throw out, we do know it's enough to warrant an upgraded prop shaft, half shafts, and a differential housing. The Challenger Hellcat, which is the basis for the Demon, makes 650 pound-feet of torque already. The new parts will go a long way toward making sure the work from the Demon's engine is properly translated into motion by those Nitto drag radials. The new prop shaft uses high-strength steel, heat-treated stub-shafts, and increases the tube thickness by 20 percent for a 15 percent increase in torque capacity. Additionally, Dodge says the upgraded differential housing allows for a 30 percent increase in torque capacity by using heat-treated A383 aluminum alloy and a higher strength shot-peened gear set. The 41-spline half shafts that deliver 20 percent increased torque capacity through the use of high-strength low alloy steel and 8-ball joints. In addition to the hardware, the Launch Assist software has been tuned to help alleviate wheel hop. Dodge says the Demon is the first factory production car that uses wheel speed sensors to detect hop and momentarily cut torque to compensate. This means a driver can keep their foot planted on the floor while the computer sorts out the traction. Previously, the best solution was to back off the throttle to manually cut the load. Finally, the Dodge Demon will offer a four-point harness mounting bar as an optional accessory. The part will be supplied by Speedlogix and fits in place of the deleted rear seat. Customers can install the bar without having to hack apart their cars to find a proper mounting point. Look for more teasers and info on ifyouknowyouknow.com in the lead-up to the Demon's debut at the 2017 New York Auto Show. Related Video: Image Credit: FCA Dodge Performance dodge demon dodge hellcat

NHTSA is investigating FCA shifters for roll-away accidents again, this time the rotary units

It seems FCA's shifter troubles aren't over yet. Now, just a few months after issuing a recall to resolve user-related issues with its monostable shifters, the company is again under investigation by NHTSA. The issue is related to the potential for cars to roll away when the rotary-style shifter is not properly placed in park. Two FCA models are the subject of this investigation: the 2013–2016 Ram 1500 and the 2014–2016 Dodge Durango. NHTSA estimates about 1,000,000 vehicles would be affected if a recall is issued. The investigation was started following 43 complaints of vehicles rolling away while supposedly being in "park." Among the complaints were reports of 25 crashes and 9 injuries. NHTSA does point out that in every incident, the parking brake was not engaged. A representative from FCA also gave us an official statement regarding the investigation: "FCA US is cooperating fully with NHTSA's investigation, the scope of which is limited. Other vehicles equipped with rotary shifters are not included. In accordance with prudent practice, the Company joins NHTSA in urging all drivers to use their vehicles' parking brakes." View 35 Photos As mentioned above, other Chrysler products with rotary shifters, such as the Pacifica minivan and 200 sedan, are not involved in this investigation. One of the key differences, as the representative told us, is that these vehicles have electronic parking brakes that automatically engage if the driver does not select park and then opens the door with the seatbelt unbuckled. The Ram 1500 and Durango feature mechanical, manually operated parking brakes and therefore cannot activate the brake automatically. Because this is currently an investigation, an exact cause for the incidents has yet to be determined, and none of the vehicles have been recalled. It's possible there could be a mechanical defect. However, the issue could be a confusing interface causing user error, as was the case with FCA's monostable shifters, where drivers think they've put the car in park but actually haven't. Something that indicates it could be a case of confused users is that NHTSA also opened an investigation into 2012–2014 Jaguar XF and Land Rover Range Rover Evoques for similar issues. Both vehicles use a rotary shifter and have had roll-away complaints levied as well. Even if it is a case of user error, FCA and Jaguar Land Rover may still have to recall their vehicles.

What does Jeep have cooking with this stretched Cherokee?

Chrysler has been spotted testing what appears to be a stretched Jeep Cherokee prototype. Which seems odd, considering that Jeep already makes a Grand Cherokee, and that's an entirely different model. The question then is just what the company has in the works here. We don't know for sure – but we do have some ideas. We're anticipating a new Grand Wagoneer to serve as the brand's flagship model, but stretching the Cherokee's wheelbase to leapfrog the Grand Cherokee's would take more than eight inches – and stretching a "compact" platform to get there wouldn't seem to make a lot of sense. Alternatively Jeep could be looking to wedge a new model into its lineup in between the Cherokee and Grand Cherokee, potentially offering a third row of seats and wearing the Wagoneer name - sans the "Grand" - as part of a new range of seven-seaters. Just what the point would be, however, when the Dodge Durango already offers three rows based on the same platform as the Grand Cherokee, is a bit of a mystery. Another possibility is that it's not a Jeep at all, but rather a Dodge. The brand is in need of a replacement for the current Journey, and we're also waiting to see what FCA does to replace the Grand Cherokee since it unveiled the Chrysler Pacifica to replace the Town and Country. More of a crossover approach could take the Cherokee's Compact US Wide (CUSW) platform as its starting point, but stretched like this prototype to offer more space. Whatever it is, we're sure this won't be the last we'll have seen of it, so watch this space. Related Video: