How long can the RPMs be in the red zone without damaging the engine? (on a manual transmission car)?

Answer 1

the problem is in the engine the valves need time to close

you spin it to quick they stay open
the lifters fall out or the pistons hit them

if you fix he valve problem there is a piston problem
they are being pushed /pulled really fast
they aren't designed for that
the pistons will break or the rods will bend

the fix racing pistons and rods Thain you can get 10000 RPMS out of it (the engine) the draw back you get 500 to 1000 miles on the engine and its time to throw it away

dragster cars get 10 races on an engine that's less Thain 3 miles on the engine but they go from 0 to 300 mph in 4 seconds

so to answer your question how long do you want to keep your car ?? don't red line it !!!!! 1 second is to long in most cases
you may be lucky once or twice but it will bite you

Answer 2

depends on the car....
amercian cars...not that long and if it's under warranty and you get caught blowing the engine racing, they will NOT replace it...

Japanese cars...depends on the car...some are better than others...but unless you have a lot of money to spend all the time on new engines. I'd be kind to the car...take your anger out on something else...

Answer 3

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