drive belt and timing belt

The designation 1.8 T refers to the specific parameters of the timing belt, particularly its tooth profile and pitch. Timing belts are usually characterized by their pitch, which is the distance between the centers of adjacent teeth. The 1.8 in the name indicates a microtolerance tooth profile that allows for greater precision in engagement with the pulleys. The “T” indicates a type of tooth shape, typically trapezoidal, which enhances grip and reliability.


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The timing belt is a rubber toothed belt that connects the crankshaft to the camshaft(s). In engines with an interference design, the timing belt is even more critical, as it prevents the pistons from colliding with the open valves. When an engine is running, the crankshaft rotates the timing belt, which, in turn, drives the camshaft. This operation ensures that the engine’s valves open and close at the ideal moments during the intake and exhaust strokes.


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