![]() The intake valve diameter is the 34.0 mm the exhaust valve diameter - 28.0 mm stem diameter for both valves is 6 mm. There are four valves per cylinder (two intake and two exhaust valves). The intake camshaft has a variable intake valve timing adjustment system. ![]() The 1.8TSI Gen 1 has an aluminum 16-valve cylinder head with chain-driven double overhead camshafts. The engine got steel crankshaft with eight counterweights, new aluminum alloy pistons, and 148 mm long connecting rods. For vibration reduction, the crankcase was equipped with two chain-driven counter-rotating balance shafts. This is the strong and reliable material which also has good acoustic dampening properties. The engine is built around a grey cast iron cylinder block and crankcase. This engine was developed from scratch the 88 mm (3.46 in) cylinder spacing is the only common feature with the predecessor. The 1.8TSI Gen 1 by Volkswagen's codes BYT and BZB was a replacement for the 2.0 TSI EA113 engine.
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