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FCA's Pentastar V6 gets more power, efficiency for 2016

Already a vital member of FCA's powertrain lineup, the 3.6-liter Pentastar V6 is receiving major efficiency improvements for 2016. Thanks to a massive amount of new tech attached to the mill, fuel economy is up six percent, and torque below 3,000 rpm jumps nearly 15 percent. The updates arrive first in the 2016 Jeep Grand Cherokee, but they should proliferate to other models eventually. At least in the Grand Cherokee, the tweaks push power up five horsepower to 295 ponies. FCA's engineers went through the Pentastar from top to bottom to eke out as much efficiency as possible. For example, there's now a two-speed variable-valve lift system that can run in low- or high-lift modes. This upgrade is responsible for 2.7-percent better economy, the company claims. A new intake manifold with longer runners and updated variable-valve times also helps boost the torque output. Further improvements come from pushing the compression ratio to 11.3:1, from 10.2:1 before. Perhaps most impressive is that despite all of the innovations, the latest Pentastar actually weighs four pounds less than the current version. Beyond the Pentastar improvements, all of the FCA US gasoline engines, except for the Viper's 8.4-liter V10, will be E15-compatible for 2016. The company says that it wants to be ready for the higher ethanol content fuel's greater use in the near future.

Jeep Wrangler-based Scrambler pickup will have open tops, longer frame

We'll probably have to wait until 2019 to see the Wrangler pickup fully revealed and on dealer lots, but it seems that the truck is already showing up in FCA's computer systems. Someone at Jeep Scrambler Forum did a little digging and found the truck's chassis code, "JT," listed with a number of parts. Among those parts were different tops, seemingly confirming that the Wrangler pickup will have a soft folding top and removable hardtops available, just like a normal Wrangler. These include the plain black soft top, a black hard top, or a body-color hard top. The hard tops are also listed as three-piece units like on a conventional Wrangler, so parts can be removed, or the entire top. The forum quotes sources as saying the pickup will be called the Jeep Scrambler. The company renewed the trademark on that model name in 2015. The forum discovered a few other mechanical details, too. The truck's code is listed under the diesel engine option, confirming that powertrain for the pickup, though no other engine or transmission info was found. The forum also found CAD models of the frame and axles. Jeep Scrambler Forum estimates the frame is about 33 inches longer than the upcoming Wrangler Unlimited four-door SUV. This isn't entirely surprising, as photos show that the Wrangler pickup prototypes are substantially longer than the four-door Unlimited models. And even AEV had to lengthen the Wrangler's frame to turn it into the Brute pickup. Finally, the forum noted that the axles are different from the current generation of Wrangler, and could possibly be stronger than normal for improved towing and payload. Related Video: Related Gallery 2019 Jeep Wrangler Pickup Spy Shots View 14 Photos News Source: Jeep Scrambler ForumImage Credit: Jeep Scrambler Forum Rumormill Jeep Truck Off-Road Vehicles jeep wrangler pickup

2018 Jeep Grand Cherokee Trackhawk First Drive | Crazy. Good.

TAMWORTH, New Hampshire – We're tempted to tell you that the 2018 Jeep Grand Cherokee Trackhawk is ridiculous. It's borderline frightening to think that we now live in a world where anybody with the money and the gumption can stroll into the nearest Jeep dealership and place an order for a 707-horsepower Hemi-powered Grand Cherokee. Let's put this slice of history into perspective. The original Jeep, the one used by the military, boasted 60 horsepower from the Go Devil four-cylinder engine under the hood. The most powerful version of the muscle car-era 426-cubic-inch Hemi was factory-rated at 425 hp. And even if that legendary powerplant was underrated from the factory, the Grand Cherokee Trackhawk still obliterates it by a couple hundred horses. In an SUV. Seven-hundred-horsepower sport utility vehicle doesn't exactly roll off the tongue, does it? And conventional wisdom says it shouldn't. But we're here to tell you otherwise. After driving the Trackhawk in and around the streets of Portland, Maine, and taking it to Club Motorsports in New Hampshire, we're convinced that Jeep and SRT engineers have managed to defy physics and reason. The Trackhawk isn't just fast, it's also manageable. Subdued, even – at least when you want it to be. Put the hammer down, summon the nearly demonic power of supercharged combustion, and all hell breaks loose. But the tires don't. With launch control engaged and with the programmable engine speed properly chosen, the all-wheel-drive Trackhawk rockets to 60 miles per hour in just 3.5 seconds, over and over and over again. No drama, no wheelspin, just g-force, pressing you and four close friends into the backs of your seats. It's addictive, and the only penalty is single-digit fuel mileage. But we'll wager a guess that anyone shopping for a Trackhawk isn't much concerned about its drinking problem. The only proper way to experience the Trackhawk's acceleration is from inside. But, to give you an idea of its speed and power, check out the videos below. Stick around for a walkaround both inside and out, and for a look under the hood. Jeep had to make a few small changes to the well-known 6.2-liter supercharged Hellcat V8 engine to shoehorn it under the hood of a Grand Cherokee. The oil pan is reshaped and baffled, the intercooler is modified, and the exhaust manifolds are new. The result is a reduction in torque from 650 pound-feet in Dodge Hellcat models to 645 in the Jeep, but we wouldn't worry about that.