Jeep Wrangler Tj on 2040-cars

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Here's what it'll take to build a Jeep Grand Cherokee Hellcat

Let's get one thing straight: We want a 707-horsepower Grand Cherokee Hellcat to happen. Badly. The latest report from Motor Authority is encouraging; the bonkers SUV supposedly has a codename, Project K, and has been given the green light for production. Fingers crossed. You might be wondering why the Trackhawk isn't already a thing. Hellcat engines exist, SRT Grand Cherokees exist, so just combine the two, right? It's not quite that easy. Here, we outline what needs to happen, why it should be the quickest Hellcat vehicle out there, and why it won't come anywhere near 200 miles per hour. How To Build A Hellcat Jeep The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged V8. The first engineering problem is feeding the air-intensive beast that is the 6.2-liter supercharged Hellcat V8. Breathing is important on two counts: pulling in enough air for the combustion to put out 707 hp, and then cooling the various heat exchangers once the engine is up to temperature. Dodge did it with the Charger and Challenger, it can do it with the Jeep. This is one place where the Grand Cherokee's larger frontal area might be a boon, as it gives the engineers more surfaces through which to suck air. Once you generate the 707 horsepower and 650 pound-feet of torque, it has to get to the wheels somehow. Jeep's current SRT all-wheel-drive system will at least need some beefing up to handle the torque. It could require a more complete re-engineering. We at least know the ZF-supplied eight-speed auto, used in the Dodge Hellcat models, is up to the task. The Hellcat engine should fit in the Grand Cherokee, as it's about the same size as the 6.4-liter currently in SRT Jeeps, but the Hellcat is taller because of its supercharger. The hood may need to be raised or at least resculpted for clearance, as well as to address those cooling needs. Quicker Than Everything, But Not Faster 200 mph? We're skeptical, from both a physics standpoint and a legal one. A reminder of the quick/fast distinction: quick is acceleration, fast is road speed. The Jeep's all-wheel drive will help put the Hellcat engine's power to the ground in a more manageable way than the Charger and Challenger do through just the rear wheels. That means better acceleration times than the Dodges (11.0 seconds in the quarter-mile for the Charger Hellcat, 11.2 for its Challenger sibling).

FCA and ZF issue recall on nine-speed automatic transmission

After years of complaints, German transmission manufacturer ZF is finally issuing a recall of its much maligned 9HP nine-speed automatic transmission. Although it has been criticized for a number of issues, ZF is issuing the recall to address the possibility of the transmission unexpectedly shifting into neutral. The issue covers 505,000 vehicles in the United States alone. This issue is related to an improper crimp on the transmission wiring harness. Rather than a physical fix, ZF is issuing a software update to remedy the problem. The company doesn't recommend dealers attempt to fix the crimp. Although the transmission can be found in a number of models by various manufacturers, currently only those from FCA are being recalled. This is the second recall in less than a year related to a ZF transmission shifting into neutral. FCA recently recalled more than a million vehicles worldwide because of a poorly designed shifter for ZF's 8HP eight-speed automatic. That issue may have resulted in the death of actor Anton Yelchin in June. Although there are no deaths related to this new recall, NHTSA reports that the issue has resulted in at least 10 injuries. Issues with the transmission have been known for years. A number of software updates have attempted to address various problems, making us wonder if there could be a fundamental hardware issue as the complaints span across a number of automakers. Vehicles equipped with the 9HP include 2014 and newer versions of the V6 Acura TLX, Chrysler 200, Fiat 500X, upper-level Honda Pilots, Jeep Cherokee and Renegade, Land Rover Discovery Sport and Range Rover Evoque, and Ram ProMaster City. Only FCA is issuing a recall and only on 2014 and 2015 models. Related Video: News Source: NHTSA Recalls Chrysler Fiat Jeep Safety FCA nine-speed transmission

2013 Jeep Wrangler Unlimited Rubicon 4X4

Ice skates are spectacular on frozen water, yet they are dreadful everyday footwear. I consider the Jeep Wrangler equally as specialized.
I recently spent a week with a 2013 Jeep Wrangler Unlimited Rubicon 4X4. Introduced for the 2007 model year, the Wrangler Unlimited is a standard JK two-door with 20.6 inches added to its wheelbase and two additional doors bolted to its passenger compartment. While Jeep offers the Unlimited in seven different trim levels, the desirable Rubicon is the most capable when the pavement ends, as it boasts a slew of hardcore off-road tools including front and rear electronic locking differentials and a front sway bar that can be disengaged at the touch of a button for improved articulation. My I-Look-Like-A-Traffic-Cone test model started with a base price of $34,095 (plus $995 destination). Options including a five-speed automatic transmission, Uconnect, tow package and a premium soft top, drove the bottom line up to $38,630.
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