Car Timing Belts and Chains: What You Need to Know
If you own a car, you may have heard of the terms timing belt and timing chain. But what are they, and what do they do? In this article, we will explain the basics of car timing belts and chains, their functions, types, advantages and disadvantages, and maintenance tips.
What are timing belts and chains?
Timing belts and chains are components that connect the crankshaft and the camshaft in a piston engine. They synchronize the rotation of these two shafts, so that the valves open and close at the right times in relation to the position of the pistons. This ensures that the engine runs smoothly and efficiently.
What are the types of timing belts and chains?
There are three main types of devices that transfer the drive between the crankshaft and the camshaft: toothed rubber belts, metal timing chains, or a set of gears. The most common type is the toothed rubber belt, also called a cambelt. Some engines use a metal timing chain instead, which is more durable but also more noisy. A few engines use a system of gears or a shaft with bevel gears on either end to connect the cam and crankshaft.
What are the advantages and disadvantages of timing belts and chains?
Timing belts have some advantages over timing chains, such as lower cost, reduced friction losses, less noise, and no need for lubrication. However, they also have some disadvantages, such as wearing out over time, requiring replacement at specific intervals, and being vulnerable to heat and oil damage.
Timing chains have some advantages over timing belts, such as longer life expectancy, more compact size, and better performance at high speeds. However, they also have some disadvantages, such as higher cost, more friction losses, more noise, and needing lubrication.
How to maintain timing belts and chains?
The maintenance of timing belts and chains depends on the type of engine and the manufacturer’s recommendations. Generally speaking, timing belts should be replaced every 60,000 to 100,000 miles or every 5 to 10 years, whichever comes first. Timing chains can last longer than timing belts, but they may also stretch or wear out over time. It is advisable to check the condition of the timing chain every 100,000 miles or every 10 years.
When replacing a timing belt or chain, it is also recommended to replace other related components, such as the tensioner , water pump , oil pump , or idler pulleys . These components can also wear out or fail over time, causing damage to the engine or affecting its performance.
Conclusion
Timing belts and chains are important parts of a car’s engine that keep the valves properly timed with the pistons. They have different types, advantages and disadvantages, and maintenance requirements. By following the manufacturer’s guidelines and inspecting them regularly, you can prevent costly engine damage and ensure your car runs smoothly for a long time.