Toyota Car Parts - 3S-GTE Engines

The 1st and 3rd Celica generation intake charge was cooled by a Water to Air intercooler while the 2nd, 3rd MR2, and 4th generation relied on an Air to Air system The third generation uses a normal 4-runner intake manifold To adjust the valve clearance, adjust the shims above the valve lifters (shim over bucket system) The pistons are made from an aluminum alloy, design to withstand high temperatures The crankshaft, located within the crankcase, rotates on 5 aluminum alloy bearings and is balanced by 8 weights The compression ration is 8 Oil holes are located in the middle of the crankshaft to provide oil to the connecting rods, bearing, pistons and various other components Built into the cylinder block are coolant channels, which cools the block which houses the crankshaft 5:1 or 8 The 1st compression ring and the oil ring is made of steel, the 2nd compression ring is made of cast iron 8:1 depending on generation The Dual Over Head Cam (DOHC) 16 valve cylinder head designed by Yamaha is made of aluminum alloy. This allows for the replacement of the shims without the need to remove the camshaft Piston pins holding the pistons in place are locked by snap rings Its cylinders are numbered 1-2-3-4, cylinder number 1 is beside the timing belt. The cam journals are lubricated by oiler port located in the middle of the camshaft Depending on where the engine was intended to be sold the exhaust turbine is either ceramic (JDM) or steel (USDM). The cast iron cylinder block holds 4 86mm pistons and has a stroke of 86mm Up to 260 hp in stock engine. The pent-roof combustion chambers are complemented by a cross flow intake and exhaust layout. The third-generation engine uses the Toyota CT20b dual-entry turbo, and the fourth uses a proprietary CT20b turbocharger whose exhaust housing is actually cast into the cylinder exhaust manifold, rather than the normal practice of a separate exhaust housing after the cylinder exhaust manifold and it can only be used on the 4th Gen 3sgte head and not backwards compatible like the CT20b of the 3rd Gen 3sgte. There are four generations of this engine, which started manufacture in 1986, and continues to the current day. Various aftermarket solutions exist all of which require replacing the intake headers or manifold. The first two generations of 3S-GTE engines are equipped with TVIS. The cam journal is supported on 5 points between the valve lifters of each cylinder and on the front of the cylinder head. A single timing belt drives the intake and exhaust camshaft along with the oil and water pumps. Due to the design of the intake manifold, cylinder number 3 runs lean under normal operation. An indentation is incorporated into the pistons to prevent the pistons from 'knocking' into the valves. A distributor based system is used to fire the cylinders in a 1-3-4-2 order.

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