Toyota Car Parts - 3S-GE Engines

The pent-roof combustion chambers are complemented by a cross-flow intake and exhaust layout The cam journal is supported on five points between the valve lifters of each cylinder and on the front of the cylinder head The cast iron cylinder block holds four cylinders which are approximately two times the length of the piston stroke The crankshaft, located within the crankcase, rotates on five aluminium alloy bearings and is balanced by eight weights The cam journals are lubricated by an oiler port located in the middle of the camshaft A single timing belt drives the intake and exhaust camshaft Its cylinders are numbered 1-2-3-4 with cylinder number 1 beside the timing belt. The Toyota 3S-GE is an in-line 4 cylinder engine manufactured by Toyota and tuned by Yamaha Motor Company Ltd. The ignition order of the cylinders is in the 1-3-4-2 order. The top of the cylinders are covered by the cylinder head At the bottom of the cylinder block is an oil pan which stores the oil The spark plug is located in the center of the combustion chamber. This is sometimes referred to as a 'non-interference' engine. There are four generations of the 3S-GE, which were used in the Toyota Celica, MR2, Toyota Caldina, Toyota Altezza and Lexus IS200 To adjust the valve clearance, adjust the shims above the valve lifters. Compression rings 1 and 2 prevent exhaust leakage from the combustion chamber while the oil ring works to clear oil off the cylinder walls, preventing excessive oil from entering the combustion chamber. The cylinder heads are made of aluminium alloy.

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