1975 Amc Jeep Cj6/cj-6 on 2040-cars

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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 first American carmaker to return to Tokyo show

Despite foreign-brand car sales in Japan declining six percent in the first four months of this year, Jeep sales are up 21 percent in the same period. That could explain why Jeep will be the first the US manufacturer to return to the Tokyo Motor Show after eight years away. Ford, General Motors, and Chrysler walked away during the global crisis that struck after the 2007 show. Jeep will be part of an eight-vehicle, four-brand showcase overseen by Fiat Chrysler Automobiles Japan, the local subsidiary. For the moment, it is the only US brand to sign up - neither Ford, GM, or even Chrysler are committed to attend. Stablemates Fiat, Alfa Romeo, and Abarth will be there, along with 13 other foreign makes, answering the "Technology & Fantasy" theme for this year's event. In total, organizers announced 15 brands from 14 Japanese manufacturers, and 27 brands from 17 foreign carmakers. The show opens to the public from Oct. 30 to Nov. 8. Related Video:

Retro Review covers that Jeep Wrangler TJ you wanted in high school

The Jeep Wrangler TJ holds a dear place in my heart. When they were introduced, the return to circular headlights helped pull my dad into the dealer, and he bought one. A few years later, I learned how to drive a stick in that Jeep. Now, MotorWeek has fired up the time machine for a look at the '97 Wrangler as part of the Retro Review series. One of the great things about these videos is that they offer a chance to see if nostalgia lives up to reality. In this situation, that seems to be the mostly case. Even when new, MotorWeek finds a lot to praise about the TJ, especially in terms of handling and style. It's not all perfect, though, with a major complaint about the braking. Watch the clip to see if the show's take on the Wrangler lives up to your memories of them, too.