Is it at all bad to be at high revs while cruising on the hwy/backroads? I'm talking like 80+mph for extended periods of time, I know the revs are around 2900@60mph, so what are they around 80 or 90? Is this bad for the car to be at those revs for a while, when I cruise on the highway, or backroads? When on the curvy backroads I usually cruise between 80 and 110 in my STI and the revs are pretty high, I cant imagine the Evo 5 speed. STI is at 2550 revs at 60mph. It isn't often I do this, I'm sure curious if it can have any negative side effects on the car.

Thanks

 

whenever im on the highway im doing between 80 and 90. These motors are built to rev. So i couldnt imagine riding along at 80mph having any negative effects on the motor whatsoever.

 

i dirve the evo in holland

highway here says 120 km/h ( around 70 miles )

i normally drive 140 km/h ( around 80 miles )

the car revs pretty high most of the time around 3700- 4100 k rpm.

i also tested the gsr @ the autobahn in germany....

and drove here on top speed 270 km/h which was 6800 rpm.

i think the gearbox would be nicer if it was six speed, Butttt if you dont mind a little bit or revin the x is just fine !
and its build to rev, so dont worry to much about the car.

 

Cruising on the interstate, im rarely below 4k rpm (80 mph). Im usually cruise at around 85-90mph

 

These engines are built to rev. No harm in holding steady at 80-100 on the hwy.

 

The only problem with the revs that high are the increase wear of the engine because of the friction.

Ever heard of the phrase RPM - Ruins Peoples' Motors?

 

Love it

 

I would think you'd be fine as long as your fluids are well kept in the car. 4-5k constant shouldn't be too bad at all on these motors. I had an old 88 nissan maxima with 300k miles on it and the motor still ran like a charm in stop and go and long drives at about those same rpm levels

 

I have a 50 mile one way commute on the interstate. Run between 80-90 for most of it. I now have 53000 miles and my oil analysis results come back great, so I would say it is not an issue.

 

not necessarily, if the engine build for the higher revs then certainly is not a problem. For friction problem , there is the fluids in the engine , and if those are the right ones in good condition, the friction the least you have to worry.
Many things can ruin the motor , like TQ - hp - etc. That frase probably came from the good old american muscle car fans... V8's for example.
If the engine build performance in mind , there for is designed to handle those conditions. The evo engine is not really a high revving engine, but the 4500 rpm steady cruise will not do any harm on it. Mostly because its not under heavy load , like lower rpm and high boost ... Also the evo engines are usually pretty loose , they not build to have a high compression anyway.

 

I agree. Each engine is built for certain specifications.
I just want to give him the big picture. An engine will wear out faster at 5000 rpms than it would just idling at 900rpms. You will not break your engine as long as you stay below where the tachometer is Red.
Even though the engine could work up there.

 

Hmm it's an evo drive it!

 

I have trouble thinking in those terms when it comes to the Evo.

Do I worry about using up a jar of peanut butter when I make a sandwich? No, that's why I bought it. When the motor is used up then I'll buy another one (rebuild it).

 

i just drove from alabama to new hampshire about 1300 miles and did 80-90 the whole way and had no issues and i drove straight through non-stop.