Toyota Car Parts - 3S-GE Engines

An indentation is incorporated into the piston head to prevent the pistons from hitting the valves, should the timing belt break (this is not true of the 3S-GE BEAMS motor) The cam journals are lubricated by an oiler port located in the middle of the camshaft The Toyota 3S-GE is an in-line 4 cylinder engine manufactured by Toyota and tuned by Yamaha Motor Company Ltd. Piston pins holding the pistons in place are locked by snap rings The pent-roof combustion chambers are complemented by a cross-flow intake and exhaust layout. The intake manifold has four independent ports and benefits from inertia build up to improve engine torque at low and medium speeds The pistons are made from an aluminium alloy, designed to withstand high temperatures At the bottom of the cylinder block is an oil pan which stores the oil This is sometimes referred to as a 'non-interference' engine The cast iron cylinder block holds four cylinders which are approximately two times the length of the piston stroke A baffle is used to ensure that there is sufficient oil available in the oil pan, as the oil moves around the reservoir during movement of the vehicle All 3S-GE engines had a displacement of 2 Additionally, the 3S-GTE engines were based on the 3S-GE designs Its cylinders are numbered 1-2-3-4 with cylinder number 1 beside the timing belt. Built into the cylinder block are coolant channels, which cool the block which houses the pistons The 'Outer Shim Type System' allows for the replacement of the shims without the need to remove the camshaft. The cam journal is supported on five points between the valve lifters of each cylinder and on the front of the cylinder head. 0 L The cylinder heads are made of aluminium alloy. The crankshaft, located within the crankcase, rotates on five aluminium alloy bearings and is balanced by eight weights. This prevents oil from being shifted away from the oil pump suction pipe.

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