Is dropping gears in a car to accelerate quickly then change back gears bad on the engine? if so, how?

i heard from a friend its good to accelerate quicklyIs dropping gears in a car to accelerate quickly then change back gears bad on the engine? if so, how?
That depends upon how often you do it as well as how high you run the engine rpm. It wears the engine out more quickly and increases heat. Doing so occasionally will cause so little damage that you can neglect it. Running your engine at its limits all the time will ruin it. That's why race cars are rebuilt so often.



You are right. It does make acceleration easier. It also adds to the stress on the engine. Also you should not overload the engine by running in too high a gear. That too is bad. Anything that runs too fast or too slow or causes an abnormal increase in temperature or fuel use should be avoided if possible.Is dropping gears in a car to accelerate quickly then change back gears bad on the engine? if so, how?
So long as you don't grind the gears and then rev the engine into the red then you should be ok.
It will kill your gas mileage, but not hard on the engine. It will help keep the carbon from building up on your pistons. Just make sure you keep up on your oil changes and keep ALL fluids topped off.



All of my beaters are driven real hard and they seem to last.
Heck no, automatic transmission cars have depended on that for a long time.

Push the pedal to the floor and it down shifts if it isn't already going to fast :)
Sometimes it's necessary but don't over do it.