This ins turn can result in metal being broken off, which will damage the cylinder walls and also the combustion cap within the cylinder head. The valves will crash into the pistons, which will be moving, so they’ll crush and bend the valves if the valves don’t punch through the piston cap. Sadly though, most modern Donkervoort power plants are engineered so finely, and to such small tolerances that without a belt, things go very wrong, very fast. ![]() Given its long list of responsibilities, there are no prizes for guess that timing belt failure is pretty catastrophic. ![]() The timing belt makes sure valves open when the cam or cams are at the right point in relation the position of the crank and consequently the pistons, which when timed to perfection can happily house spark, ignition and combustion, which translates to us a forward motion. But as chains seldom, they have no place here. Con rods rise and fall, cranks spin, valves open and shut, pumps keep everything oiled and all of this, every bit of it, is overseen by the motion of a 25,00 Euro’s bit of rubber. Within the walls of your engine you’ll find a delicate and perfectly choreographed ballet of metal and oil. The job of a timing belt is to, frankly, the keep the engine timed. So why then, does it cost a small fortune when one breaks? After all, all it has to do is go around and around. Your Donkervoort timing belt is a seemingly innocuous part thanks to its low value and apparently simple job within the engine. ![]() Timing belts – what happens when they break?
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