Chrysler Pentastar engine


The Chrysler Pentastar engine family is a series of aluminium dual overhead cam 24-valve gasoline V6 engines introduced for the 2011 model year in Chrysler, Dodge, Ram and Jeep vehicles. The engine was initially named "Phoenix," but the name was changed before the official launch due to a trademark conflict; the Pentastar name is derived from the trademark of the former Chrysler Corporation, which dates back to 1963. It will eventually be replaced by the Hurricane 4 EVO engine as the main corporate engine for Stellantis North America.

Production

The Pentastar engines are made in three different factories: Dundee Engine Plant, Trenton Engine Plant and Saltillo South Engine Plant.
The Pentastar engine was introduced at the 2009 New York Auto Show. The engine design allows the use of E85 or 87 octane fuel and features dual variable valve timing. Forced induction, and cylinder deactivation options were engineered into the engine design, but have not been implemented from the factory, remaining "on the shelf" as of 2016.
Insiders initially reported that the engine would come in four basic sizes, each offered in various states of tune. The 3.3 L and 4.0 L have been dropped from the list and a 3.2L added, while Fiat's investor website, as of December 2011, specifies the 3.0 L with Fiat's MultiAir technology. The 3.6 L engine itself has different power ratings in different vehicles, and has higher output and of torque when applied in the Dodge Challenger.
Single and Twin-turbocharged variants had been planned for 2015. These engines were projected to produce around, respectively. Direct injection was also planned.
Due to the new ownership structure, Fiat has obtained the right to use these engines, and had adopted them in the larger models of Lancia and Fiat brands.

First generation

Applications

3.0 L

3.2 L

3.6 L

Versions

CodeDisplacementBoreStrokeYearsPower SAETorque SAE
2013– at 6350 rpm at 4400 rpm
S2014– at 6750 rpm at 4400 rpm
G2010– at 6400 rpm at 4800 rpm
G2010– at 6350 rpm at 4800 rpm
G2010– at 6350 rpm at 4800 rpm
G2010– at 6350 rpm at 4800 rpm
G2012– at 6400 rpm at 4800 rpm
G2013– at 6350 rpm at 4800 rpm
G2013– at 6400 rpm at 4175 rpm
G2015– 2016 at 6350 rpm at 4250 rpm
G2012- at 6350 rpm at 4350 rpm
G2012- at 6600 rpm at 4000 rpm
G2012- at 6350 rpm at 4650 rpm

Pentastar upgrade

For 2016, FCA released an updated version of the 3.6 L engine. This engine features upgrades to the variable valve timing system, two-stage variable valve lift, a new intake manifold, new valve springs, new piston rings, new fuel injectors, new ignition coils, a cooled Exhaust gas recirculation system, lower internal friction and lower weight. It also features a higher compression ratio, increased from 10.2:1 to 11.3:1. These improvements increase power as well as efficiency, however the new version no longer supports flex-fuel capability.
CodeDisplacementBoreStrokePower SAETorque SAE
G

Applications

The 3.6 produced 295 hp also in the 2015 engine across Chrysler, Ram, Jeep and Dodge models, but the 2015 3.6 also supported flex-fuel option