The Chrysler Group 5.7-liter HEMI is Elegantly Simple, Delivering Power and Fuel Economy.
No other engine in U.S. history has the heritage and recognition of the Chrysler Group HEMI®. While completely re-engineered from the legendary 426 HEMI V-8 that powered Chrysler muscle cars of the 1960s, the two features that earn the new 5.7-liter HEMI power plant its HEMI name are:
- The hemispherically shaped combustion chamber designed to accommodate large valves and put the spark plugs close to the center of the combustion chamber.
- The cross-flow valve arrangement that is perpendicular to the crank-shaft centerline.
Facts and Features:
- In the Chrysler 300C, Dodge Magnum RT and the all-new 2005 Jeep® Grand Cherokee, the 5.7-liter HEMI is equipped with Chrysler Group’s Multi-Displacement System (MDS), which turns off four of the cylinders when V-8 power is not needed, giving customers up to a 20 percent improvement in fuel economy.
- The 5.7-liter HEMI engine is an internally balanced pushrod, OHV 90-degree V-8.
- The cast iron block is a deep-skirt design with cross-bolted main bearing caps.
- The aluminum cylinder heads feature two valves per cylinder, hemispherical combustion chambers with dual spark plugs and coil-over-plug ignition.
- An Integrated Air Fuel Module (IAFM) incorporates the function of 26 individual components in the induction and fuel system, thereby reducing cost, weight and engine plant complexity.
- The 5.7-liter HEMI marks Chrysler Group’s first application of an electronic throttle control in a rear-wheel-drive vehicle.
- A systematic approach to sealing, using premium elastomeric materials and state-of-the-art practices, helps ensure a leak-free, weep-free engine.
- The power plant’s simple and efficient design means servicing and repairs are easier and less costly.
Source Of Information: DaimlerChrysler