A short history of timing belts and chainsīack in the day when the American automotive industry was still developing, the most powerful V8 engines had timing gears. In other words, your engine gets ruined and that’s the worst mechanical breakdown you could have in a car. If you have an interference engine where the cylinder head is closer to the pistons, breaking of the timing belt or chains could result in pistons going through the cylinder head. This isn’t only important to understand how your engine works – it describes the action that the timing belt and chains enable. The cycle starts over as the piston gets forced down again by the combustion. This way the piston compresses the combustion mix and a spark plug is used to light it up. As it gets to the bottom dead center, the inlet valve closes and the piston gets to the top dead center. Thanks to the timing belt or a chain, the piston is forced down while the air/fuel mix enters the cylinder. The combustion mix enters through inlet valves, and the exhaust gases exit through the exhaust valves after combustion. On the other hand, the camshaft is the engine’s upper shaft with cams that control the opening and closing of the engine’s valves. The crankshaft is the shaft that the pistons are attached to, and it converts the force from the moving pistons into a rotational motion. Both timing belts and timing chains serve the same purpose – they synchronize the rotation of the crankshaft and the camshaft. The timing cycle of your car’s engine is a crucial thing as it allows for proper combustion and prevents misfires and physical damage to engine parts. So, if they seemingly share the same purpose, why is there a debate on timing belt vs timing chain, and what’s a better solution for the engine? Let’s find out together in this detailed guide. Both synchronize the opening of camshaft valves with the stroke of pistons on the crankshaft. You don’t need to know much about them to drive your car, but if there’s a problem with your engine, that’s where the knowledge comes in useful.Įssentially, both the timing belt and timing chain synchronize the timing cycle of your engine, enabling it to run smoothly and efficiently. If you aren’t much of a car guy, terms like timing belt and timing chain might seem confusing.
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