When Chrysler revealed the new Jeep Grand Cherokee this week in New York, it marked the first public appearance of the company's new V6 engine family. What had previously been referred to as the Phoenix is now officially dubbed the Pentastar V6. Over the next couple of years, variants of this engine will supplant all current 6 cylinder engines in Chrysler's lineup. Like its predecessors, the Pentastar has a 60 degree block angle but manufacturing process has been changed to high pressure diecasting. The initial 3.6-liter version has dual overhead camshafts with variable cam phasing.
The engines are designed to be lighter and more efficient than the units they replace. The first 3.6-liter is claimed to use eight percent less fuel than before, even with the port fuel injection it will have at launch. In the past, Chrysler has said these engines will also have direct injection which will probably appear on later variants. All of the Pentastar V6s will have flex fuel capability from launch.
[Source: Chrysler]
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