What are the risks of high RPM

[DSC]

Just wondering what will wear out and/or break on your car if you constantly subject it to race conditions of 5000+ RPM's. Like if every time I started from a stop light I took it up to 6000rpm in every gear. Also what are the dangers of reving to high rpm's very fast? Like I'm trying to heal toe downshift and I rev it up really high by accident with the clutch in and let the clutch out causing the car to jerk hard and stuff like that or if I miss a gear or whatever. Just wondering how carefull I need to be when playing with my new toy and what risks i'm takeing when I'm playing/learning/experimenting.

[ca18guy]

A piston ring might blow, you might float a valve, pretty much something will get out of "sync" in the engine cycle.

[PSI240SX]

If you took the engine to 6000 rpm in every gear, every time you left a light, you are just wearing things out faster in the engine. They are going to wear out one way or another, it's just a question of when. Things get alot hotter the faster you go, my Exhaust gas temperature guage reads about 5-600 celcius when driving normally, when I floor the car it climbs just above 850, whats that about 1500 F? At high temperatures oil starts to break down causing more friction on wear items such as piston rings, engine bearings, etc.

theres more stress on the engine because the pistons are moving rapidly causeing heat because of friction between the pistons and the engine block.  excessive heat is an engines enemy.  it wears the metal down prematurly.  also you wear the spark plugs faster because they fire more rapidly.  basically everything is working to the max when you run high rpm's so wear happens a lot faster.  you do save gas though!

[misnomer]

Bad things man

[240booster]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from Minime686 on 10:50 pm on Oct. 13, 2001
theres more stress on the engine because the pistons are moving rapidly causeing heat because of friction between the pistons and the engine block. excessive heat is an engines enemy. it wears the metal down prematurly. also you wear the spark plugs faster because they fire more rapidly. basically everything is working to the max when you run high rpm's so wear happens a lot faster. you do save gas though!
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SAVE GAS?<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>??!!!!!!!! &nbsp; HOW THE #### DO U FIGURE THAT!!!!!<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>??

I personally heard that the best way to save gas is to get up to what ever speed you want to go fairly quickly. &nbsp;Not flooring it because then the injectors open all the way and the fuel pump is on full blast, &nbsp;but don't hang around the 3-4000 range or higher. Get to your normal crusing rpm. 2-3000. &nbsp;

[Jeff240sx]

There is more stress on the engine at high rpms. &nbsp;The first things that would go are the connecting rods, or valve train stuff, like cams and valves. &nbsp;This is because the stress of the high rpms is a killer.
It is less hard on your engine to push 515 horespower at 8,500 rpms than it is to push 225 at 11,000 rpms.
-Jeff