Spark plug tubes are pressed into the heads and sealed in place; the tubes have thin walls, and mechanics were advised to be careful when working with them.The cylinder block is a high-pressure die cast aluminum design, with an open deck and cut slots between each cylinder; cast steel cylinder liners increase longevity. The tubes are pressed into place and cannot be removed. Torque actuated, the phasers use the natural action of the valve springs to pump the phasers into position, lowering the amount of energy required to move the phasers very quickly. Performance issues including misfire conditions, loss of power and, in some instances, stalling were reported. You may need to download version 2.0 now from the Pistons have a reduced skirt area to cut weight and friction. The intake valve is a single-piece design, made of forged heat resistant (martensitic) steel; exhaust valves are two-piece designs, with a forged austenitic head welded to a martensitic stem, and both have a nitrided surface treatment to prevent scuffing (except at the tip and lock grooves).

This warranty was extended for 10 years or 150,000 miles, whichever was to occur first. An internal, mechanical ball-and-spring relief valve dumps oil into the sump when needed, for conditions such as a cold start with high engine speed. The integral manifold also results in a broader range of stoichiometric operation reducing fuel consumption during mountain grade and trailer tow driving.Extremely efficient with advanced emission technology, the new 3.6-liter Pentastar is designed for all future emission standards. The Phoenix engine was designed to be used in either a North-South and East-West configuration.Refinement was achieved with the help of advanced computer-aided engineering. Click here for complete warranty information. Horsepower gains have been significant across all models. To say they come out clean is a gross understatement. This was noticed due to a ticking sound that was emitted from the cylinder. While some of these issues are not a threat to the performance of the vehicles, others have detrimental effects and needed to be corrected. Intake assemblies, which together accounted for 32 different part numbers, have been slashed to two upper and two lower assemblies. The Chrysler Pentastar engine family is a series of aluminium (die-cast cylinder block) dual overhead cam 24-valve gasoline V6 engines introduced for model-year 2011 Chrysler, Dodge and Jeep vehicles. It was first used in several Dodge and Chrysler vehicles, plus the Jeep Grand Cherokee and Volkswagen Routan (essentially a rebadged Dodge Caravan). The twin-turbo version was projected for a whopping 420 horsepower while the single-turbo was set for 370 hp; The economy 3.3 has been dropped, but the 3.2 uses lower-friction pistons, narrower sleeves, and smaller journals and main bearings, and different rods, for much less rolling resistance and higher gas mileage. Look at the information below to see how this may affect you.The problems reported with the Pentastar 3.6L motor can affect all Chrysler, Jeep, and Dodge branded vehicles in which they are installed. The machining department has two parts-washing operations for the heads; one plant worker wrote, “They use an 80 horsepower motor with a 2,500 psi pump about the size of a small diesel motor. Upon its release, there were a few common problems that were noticed. Exhaust valves are 30mm in diameter and canted at 18.8 degrees.
During our extensive testing, we found the new 3.6 Pentastar aka “the Phoenix” to be an incredible engine in almost every way. Cylinders are numbered front to rear; the right bank has pistons 1, 3, and 5, the left 2, 4, and 6, with a 1-2-3-4-5-6 firing order. The engine accessories have no brackets; they are bolted directly to the block, cutting vibration.

For example, below 3,500 rpm, the pump conserves energy by using low pressure; at speeds over 3,500 rpm, the pump switches to high pressure.A force balance mechanism inside the oil pump adjusts the size of the pumping chambers to alter oil flow.

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