i read somewhere that at 10,200 rpm the valves will come in contact with the pistons. is this right?

 

Using the speed in gears spreadsheet 8500 RPM in 4th gear is 109 mph. Why after being on the track were you going 109 mph on your way home??????? That kind of treatment can only lead to future problems. Take it easy.... Your wallet will appreciate it.

 

10600 is when the valves will touch the pistons....there are some calculators to tell you what speed that is in each gear.

 

ok its 10,600 RPM not 10,200 RPM

 

oh hey i didn't even see your post saying 10,2 didn't mean anything by my bluntness

 

As long as the rev limiter does its job there really should be no problem.

 

rev limiter does not protect from mechanical overrev...it can cut fuel but can't slow the engine down if you use the speed of the vehicle to send the rpms too high.

 

The rev limiter WILL NOT HELP on a mechanical over rev like this because the momentum of the car will spin the engine at what ever RPM is apropriate for the gear you are in and the car's speed. Even though the engine has had the gas shut off by the rev limiter, you can still over rev the engine.

 

I over-reved the hell out of mine (by mistake) and bent 2 vavles. I must of hit 11,000 RPM's! My S2K started to idle rough immediately after I did it. Unbelievably & luckily, the dealer covered under warranty.

 

Too add to the other's comments. The car has a built in rev limiter that works when upshifting but NOT when down shifting. According to owners with aftermarket computer monitoring equipment the rev limiter engages between 8950 and 8990 rpms.