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What is a zero tolerance engine?
Also known as a interference engine, A zero tolerance engine is an engine that would damage the valves and likely the pistons without correct timing. This would occur because the valves and piston have the ability to come into contact with each other. With correct timing, this is not an issue because the piston travels away from the valves as they travel into the cylinder. When timing is lost, the piston could travel toward the valves as the valves enter the cylinder, resulting in severe damage to both. This is not an issue in a non interference engine because the piston and valves will not contact each other if timing was lost.
Is a Mazda Protege engine noninterfering?
Depends on the year. The 2.0 DOHC in a 2001-2003 is said to be a valve interference engine, meaning the valves can become struck by the piston and bent if the timing belt breaks or another event that significantly alters the valve timing occurs.
What is an interference engine?
It refers to an engine where the area occupied by the valves when they are open is occupied by the piston when the valves are closed. If the timing belt lets go while the engine is running the piston will smash the open valves doing loads of damage.
Is the 2003 Mazda Protege an interference engine?
Yes, the 2003 Mazda Protege is equipped with an interference engine. In an interference engine, the timing of the valves and pistons is such that if the timing belt or chain fails, the pistons can collide with the open valves, potentially causing significant engine damage. Therefore, it's essential to maintain the timing belt and replace it according to the manufacturer's recommended schedule to prevent failure.
Will the valves bend in an interference engine when the timing belt breaks?
In almost every instance yes, there will be damage to the valves and possibly the piston.
Is a 1999 Mazda Protege 1.8 liter engine an interference engine meaning if the timing belt breaks will the pistons hit the valves?
No , the 1.8 liter 4 cylinder in a 1999 Mazda Protege is not an interference engine
What is zero clearance engine?
In an engine, the piston's go up and the valve's that are adjacent to that piston go up. When the piston goes down the adjacent valves go down. This is achieved by the timing belt or chain and the engine timing being set correctly. If the belt or chain breaks, the pistons still go up and down, but the valve's stop moving. On a non clearance engine, the piston will go up and hit the valves, resulting in bent valves and a now needed head job. In a clearance engine, the top of the piston has an inset cut into it that is just enough room to avoid hitting the valves.
If the timing belt breaks will the piston heads crash with the valves on a 2004 Kia Optima 2.4 dohc?
The failure of the 2004 Kia 2.4 liter timing belt can cause severe damage to the piston heads and the valves. The timing belt failure can ruin the engine.
Will a broken timing on a ford ranger 2.3 dammage the engine?
It can, because when the timing chain/ belt fails, the pistons and valve are no longer in time, and the valves can be pen when the piston comes back up. This can cause bent valves, and piston damage. this is wrong a 2.3 is not a critical clearance engine the valves will never hit the pistons.
Would a 1992 ford gt 1.8 liter engine be a interferance?
By interference, if you are referring to the valves. The 1.8 liter is a non interference engine. If the timing belt brakes, then the valves do not interfere with the piston. They do not try and occupy the same space. The 1.9 liter engine is an interference engine. If the timing belt breaks then the valves will occupy the same space as the piston and they will hit each other.
Will the piston hit the valves on a 97 Mazda B2300 2.3L pickup if the timing belt broke?
No, this is not an interference engine.
Is a Mazda Protege 1.6L DOHC an interference engine?
As far as I'm aware the engine is identical to that used in the MX5, so I'd assume yes it is an interference engine ^^Actually, the engines have the same displacement but that is the only similarity. The blocks are different, the transmissions are different and the heads are totally different. The mx5 engine is a B6 and the protege 1.6l is a ZM or ZM-DE depending on whether or not it is european. That being said, the protege 1.6l engine is non-interference, meaning that if your timing is off or your timing belt skips or breaks, the valves will not come into contact at any point with the pistons (there are 4 cut-aways in the piston heads to prevent any contact with the valves)
