The Jeep Pentastar Engine

Pentastar V6 Engine

Running on regular gas, the Pentastar engine is estimated for 16 mpg city, 23 highway on the Grand Cherokee — vs 16/20 for the Hemi. It meets California LEV II+ evaporative emission requirements, Tier 2, meets Federal Bin 4+ emission requirements, and Clean Fuel Fleet Certification (CCF-LEV) in all other states.

The engine features high-flow intake and exhaust ports, which in combination with VVT via dual independent cam phasing, allows optimum volumetric and combustion efficiency over the full speed and load range. This results in an exceptional, flat torque curve along with high specific power. The engine’s torque exceeds 90 percent of its peak value from 1,600 to 6,400 rpm, which provides outstanding drivability and responsiveness.

In the Grand Cherokee, the engine will not have direct injection, possibly because that technique, while more efficient, adds some noise and vibration. Direct injection is rumored to be on future versions of the engine.

Refinement was achieved with the help of advanced computer-aided engineering. Structural, intake, and exhaust areas deliver low levels of noise. Idle quality was improved through the dual independent cam phasing.

The advanced oil filter system eliminates oil spills and contains an incinerable filter element instead of the typical spin-on filters, which are disposed of in landfill sites; the filter is conveniently located on top of the engine. The use of long-life spark plugs, regular gasoline, and a high-energy coil-on-plug ignition system also helps to reduce cost of ownership. The engine also is fully flex fuel capable, offering consumers the choice of gasoline or E85 fuel without any degradation in performance or emissions.

For more information, contact
Charapp Rt.28 Chrysler Jeep Dodge & Ford:

(724) 294-2000 Ford or (724) 295-5000 Chrysler Jeep & Dodge