![]() If you do not know which kind of setup your engine has, call the vehicle’s manufacturer and find out. ![]() Also, piston connecting rods have been known to push through oil pans after the crankshaft broke because of a violent shock.Įngines with a “non-interference” setup will not be affected by the piston and valve collision damage but you will end up stranded. ![]() In other cases, the pistons and cylinder heads can become damaged by rods and valves pushing through the metal. Permanent damage to the valves along with the bearings and other components will take place. In one case, the 4-cylinder engine, pistons, and valves were colliding and then destroyed when the timing belt broke. If the valves come to a complete halt too far into the cylinder heads, the pistons will smash into them before coming to a halt. During normal operations, timing means the pistons are never trying to take over the same space as the valves. This is an engineering call that’s done for performance or emission reasons. With an interference motor, both the intake and exhaust valves will extend further into the cylinder area when they are opened. When valves stop moving simultaneously with the rest of the engine, you will end up with bigger issues than a stalled engine.ĭamage to the valves and cylinder heads that house them can result if your engine has what is known as an “interference” design. If the timing belt breaks, your engine will immediately stop operating because the intake and exhaust valves will come to a complete halt causing compression in the cylinders to disappear. The Importance Of A Timing Beltīecause they are made from rubber, the timing belt will eventually dry up, harden, crack, and come apart. Over time, rubber compounds have become more durable making replacements up to 100,000 miles or even more. There are manufacturers that suggest replacing these belts every 30,000 miles. Over the first 20 to 30 years of their existence, manufacturers usually recommend replacing them between 45,000 and 60,000 miles. In many cases, chains will last the entire lifetime of the vehicle. Also, a timing chain lasts a much longer period of time than a timing belt. ![]()
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