Timing belts are held in place using spring loaded tensioners that adjust themselves to keep the belt in place without over stretching it. It is usually well hidden from view behind plastic trim, to keep it from getting dirty or exposed to harmful liquids. The timing belt was designed to be cheaper and easier to service, and is located outside the engine block. Most timing chains should last the lifetime of the engine, however they should be serviced at around 100,000 miles as the tensioners can wear out over time (especially if the engine oil has not been changed regularly). There are also chain guides that help to keep the chain in place. It is held in place with spring loaded (or oil pressured) tensioners that remove the slack from the chain and stop it from moving out of place. Generally, a timing chain is located inside the engine block where it is bathed in engine oil. Timing chains and timing belts may perform the same job, but they are very different in how they operate and how long they last.Ī timing chain is made from metal whereas a timing belt is made from strong rubber. In this article, I’ll explain the function of both the chain and the belt and the pros and cons of each What is the difference between a timing chain and timing belt? The one big difference between the two, is that the timing belt must be changed at regular intervals as it can wear and break, possibly causing major engine damage. A timing belt is made from heavy duty rubber and has teeth along its inner edge to hold it in place.Ī timing chain does the same job as a timing belt it keeps the timing of the engine pistons in sync with the movement of the air valves by joining the rotation of the crankshaft and camshaft. The main difference between a timing chain and timing belt is that the chain is made from metal and resembles a bicycle chain.
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