In Reply to: ok..this is a HONDA engine (more) posted by MK on October 05, 1999 at 14:09:57:
Hmmm let's see
: OK this is a HONDA engine
Yep, honda produces well build engines
: AKA run 300K miles without problems
Yep, usually civic or accord engines that are well taken care of and have a redline of 6000-6500 rpm.
: AKA never need any maintenance
Ya right. I can tell you're not a mechanic. Sure a honda engine will take neglect because it is a well built engine, but it won't last 300K miles that way...
: AKA redline it all day long, AKA bulletproof.
No such thing. Probably the closest thing to the statement above would be a rotary, which has very little internal friction, and even then, there's still lots of friction on the rotor bearings.
: Those VTEC engines are DESIGNED to be revved that high and kept there... from factory.
Yes they're designed to spin at those rpms without blowing up. Yes they're designed to produce hp at high rpms. But unless honda is withholding some new technology for low friction metals, they're using the same materials as everybody else: iron/aluminum/steel (and maybe a little titanium for the conn rods) covered with lots of oil. Works well but is not a frictionless surface by any means.
: That's why they only achieve promised horsepower a little shy of their high redline.
Sure, again...engineering for hp has nothing to do with reducing internal engine friction. Internal engine friction can be helped, and can produce a little more hp, but CANNOT be reduced to the point where we can go about happily revving our motors to 8000 rpm CONTINUOUSLY and expect it to live as long as the guy who drives sanely. That's my point, nothing more, nothing less.