The throttle body is electronically controlled – Electronic Throttle Control, where there is no physical link between the engine throttle valve and the accelerator pedal. The GM 2.4 Ecotec uses a sequential port fuel injection managed by a module. The valvetrain uses hydraulic roller finger followers, central-located spark plugs, and a coil-on-plug design for the ignition system. As mentioned above, the 2.4 Ecotec engine has variable valve technology, which is absent in the older 2.2 Ecotec, which is also electronically controlled. The 2.4 Ecotec engine features a chain-driven double overhead camshaft design. Mounted on top is an aluminum cylinder head with four valves per cylinder. These guys spin at twice the speed of the engine crankshaft to minimize second-order vibrations. This new engine is also installed with twin counter-rotating balance shafts. This integrated design aims to spray oil continuously under each piston, increasing the durability and strength due to reduced engine operating temperatures. Moreover, GM introduced piston cooling jets into the engine block design. Early engines were equipped with GKN forged connecting rods but changed after a year to C70 connecting rods. The block also features direct-mounted accessories. The cylinder block is made from aluminum with a highly rigid lower crankcase, a reinforced Gen II block. Like its brother, the 2.2 Ecotec, the 2.4 Ecotec is an all-aluminum lineup engine. It was also one of GM’s highest volume engines at that time.įurther, the 2.4 L Ecotec LE5 features a larger displacement and new and exciting technologies to make it more powerful and efficient at the same time. The latter has proven itself to be one of the excellent engines in the modern era. The basis of the 2.4 LE5 engine is the 2.2L Ecotec engine. It is also integrated with Variable Valve Timing on the intake and exhaust to improve low-end torque levels. Its bore and stroke dimensions are larger. The 2.4 LE5 engine is a larger 2.4L version of the Ecotec family. Valvetrain: DOHC four valves per cylinder.In addition to that, GM 2.4 Ecotec engine features variable valve timing extended spark plugs life, extended coolant life, and electronic throttle control. The engine has remained in the industry for 13 years and has further updates marked with unique LE9, LE5, LAF, LAT, and LUK. General Motors produced this engine to power various compact and midsize vehicles such as Equinox, Saturn Ion, Aura, Vue, Chevrolet Malibu, Pontiac G5, and Buick Regal to name a few. The GM 2.4 Ecotec engine is a four-cylinder, 2.4-liter gasoline engine. It is also efficient and economical, offering good fuel consumption averages. The engine has a power rating of 182 HP at a maximum which is pretty decent for a small N/A design. However, throughout its tenure, the engine served many vehicles, including Buick, Chevy, Saturn, Pontiac, and GM models. The great GM 2.4 L Ecotec engine made its way to the automotive industry in 2006 and remained in the field for several years until its graceful exit in 2019 in the form of Polaris Slingshot.
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