Yes and no...
Yes in the sense that the engine is spinning very fast. There are only so many revolutions the crank will make before something breaks. Also, you are wearing out the engine faster.
No in the sense that a good condition engine should have a rev limiter set at a point to where the engine will not over rev.
So long as everything is in good condition (good oil, maintained engine, ect...) then I don't think it's too bad. My red line is just below 7k and I get to 6k daily for over two years. The engine has 100,000 miles and has hit red line countless times.
Put the engine into high RPM in neutral or park.
The rpm of the engine - revolutions per minute
The engine is not meant to run at high rpm's at a stop for a long amount of time. The motor cant circulate antifreeze and there is no air to cool the motor at a stop. Any car will do that. What a stupid answer! I didn't say I was stopped!
Mercedes Benz SLK 230's engine will start cutting out at rpm's above 4k if the car is in park. This is a self preservation safety feature.
It depends how high you're talking about. If you mean revving all the way to the red line then yes this is bad for the engine. But the rpm shouldn't exceed 4000 rpm. If it is slightly below this then it is fine.
It is possible Marine engines may rotate the other way Marine engines may and do have specialised anti corrosion innards Marine engines are built to run for long periods at high loads and moderately high rpm Car engines are built to run at lower rpm and lighter load with bursts of higher rpm and higher load. Marine engines do not like many many changes in RPM like in a car It comes down to the car engine will not last long in a boat
Revolutions per minute of the crankshaft in the engine.
A typical idle speed for a normal car engine is 600 rpm to 1,000 rpm. It is higher for buses and motorcycles. RPM stands for revolutions per minute.
It won't hurt the engine but it will hurt the catalytic converter.
RPM is short for Revolutions Per Minute. It is the measurement of how many times your engine is rotating each minute. As you accelerate, your RPM will increase until the next gear is selected, lowering the RPM. RPM is the whole reason for transmissions: if there was only one gear the RPM would get so high that the engine would become damaged. By shifting into higher gears, the RPM is lower and you get better gas mileage.
rev limiter will only let the RPM's get so high then it cuts back
No automobile engine will even run at 2 rpm's. The average engine idles at from 650-750 rpm's, and will easily rev to 5,000 rpm's.