Section 121 (Engine Mechanical): General Description: Engine

WARNING: This page is about a different car, the 2002 Saturn LW300 and 2002 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: 3.0L "L81" Engine

Courtesy of GENERAL MOTORS CORP.

The engine is a water-cooled six cylinder V configuration engine with twin camshafts per cylinder head and four valves per cylinder. The angle between the banks of cylinders is 54° which results in a compact engine. The cylinder volume is 3.0 liters. For cylinder arrangement refer to illustration.

Fig 2: Identifying Cylinder Layout

Courtesy of GENERAL MOTORS CORP.

The engine utilizes the Motronic engine management system.

The camshafts are driven by a toothed belt. The engine contains the following features: automatic purging of the air in the oilways supplying the oil to the tappets, an integral oil cooler to cool the engine oil and a main bearing bridge support which stiffens the block around the main bearing area.

The oil cooler has dual functions; it heats the oil when cold starting and cools the oil at operating temperature.