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Originally Posted by Brucelee
Again, we are just having a theoretical disussion, there is no argument per se.
The assertion made was that running the Boxster engine at high rpms (to red line every day) is GOOD for the engine. Cleans out carbon etc. The implied converse is, the engine is built for high RPMs so NOT running at high RPMs is bad for the engine.
I assert this is not and cannot be true.
There are tons of mitigating factors. However, I would like someone to explain how heat, friction, stress and wear are all not HIGHER at higher RPMs and piston speeds. I think this would take a repeal of the laws of physics and engineering.
BTW- I used to set my oil temp gauge on the C5 and when I ran it at high RPMs, the oil got hot and quickly. The cooling system kept the car OK, but the innards of the engine were getting quite toasty.
I may be wrong but when an engine is designed to run high horsepower, high RPMS, they always beef it up in design. If RPMS were GOOD for the engine, they would not need to do this.
When an engine is designed for high RPMs, I don't think they look for a cheap grade oil, they spec synthetic etc. In other words, they try to accomodate the high RPM, piston speeds, etc. They must do this for a reason, no?
My point is, it is fun to run your engine hard, how fun is a track day! :
However, just be honest, this fun comes with a risk. To deny this seems disingenuous.
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Well, I don't want to get sucked into this
Black Hole, so I'll just posit this thought and be done with it.
I'm not sure I agree that High RPM engines are 'overbuilt'. Typically, if anything, they are 'underbuilt' to lighten the reciprocating mass in order to facilitate the high RPMs.
High HP motors may be another story.
Further still, High RPM/High HP
Production motors also meant to meet a certain
reliability criteria may be yet another entirely different story altogether.
My own personal belief system says that higher stress equates to accelerated wear, but I'm no self-proclaimed expert on the subject.
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