Keep her above 4000rpm and she'll thank you for it every day.

[Bavarian Motorist]

Lol, not even CLOSE to a problem for me.


I beat the crap out of her! She loves me for it.

[teacher]

Though I know this is an old post, I wanted to ask anyone about how long they should keep their cars above 4000 rpm? Ten minutes? An hour? More?
Just curious!
Bill

[Paul]

If you're in top gear, until you get where you are going, just like in Germany.

[Paul]

Once it's good and warmed up, I always look for safe opportunities to floor it and shift above 6000. This happens every time I take it out.

[RandallNeighbour]

While keeping our engines above 4k does keep carbon from building up, it does wear the engine out sooner too. Brucelee stated this elsewhere on the forum a while back when asked this same question. Good logic.

I don't keep my motor above 4k at all times, that's for sure. But I do run it up to redline most every time I drive it though to blow out any cobwebs that might have accumulated in the car between drives

I went through the Tail of the Dragon 6 times last Spring, never shifted out of 2 gear. Kept the RPM's above 4,000 the entire distance, about 12 miles each way.

[Paul]

You left out the best part: Both you and your car were SMILING!

[RandallNeighbour]

Originally Posted by bmussatti

I went through the Tail of the Dragon 6 times last Spring, never shifted out of 2 gear. Kept the RPM's above 4,000 the entire distance, about 12 miles each way.

Ditto here, Bill!

I was in 2nd gear the whole time and well above 4k too while driving the dragon.

However, I don't drive the dragon exclusively with the car and while I move past the 4k mark with most shifts, I don't keep it up there all the time.

Chock it up to $3.50 per gallon fuel I guess

[blue2000s]

Originally Posted by RandallNeighbour

While keeping our engines above 4k does keep carbon from building up, it does wear the engine out sooner too. Brucelee stated this elsewhere on the forum a while back when asked this same question. Good logic.

I don't keep my motor above 4k at all times, that's for sure. But I do run it up to redline most every time I drive it though to blow out any cobwebs that might have accumulated in the car between drives

I read an SAE paper a while ago that measured engine wear by oil analysis if metal particulate. They found that engine wear was not, in fact, related to engine speed at all. It was directly related to load. The higher the engine load, the higher the wear.

Particulate count was consistent no matter what the RPM of the engine for a given load, essentially stating the higher the RPM, they found the lower the wear per stroke.

[Brucelee]

Originally Posted by blue2000s

I read an SAE paper a while ago that measured engine wear by oil analysis if metal particulate. They found that engine wear was not, in fact, related to engine speed at all. It was directly related to load. The higher the engine load, the higher the wear.

Particulate count was consistent no matter what the RPM of the engine for a given load, essentially stating the higher the RPM, they found the lower the wear per stroke.

Love to see this. they have repealed the law of physics here if that is what they are saying. Load and stress on all metal structures within an engine increases as RPM increases. Again, if high RPMS were GOOD for an engine, race car engines would last forever. They don't, not even for weeks.


BTW-wear is measured by things other than particulates in the oil.