my car did this to me as well (constantly)
heres what you should check
1) floor mats can make the pedal stick down
2)the wire "mount" near the alternator got caught on my throttle cable a few times... make sure it is mounted away from the cable.

 

I have that vid of the guys trying to kill the RX7 if someone wants to host it.

They were taking bets to see how long it would last, and they were thinking 10-30 seconds I think. Then it ended up going for 10 minutes, on only 1 rotor to boot

 

search kazaa for "rotary abuse" and see just how long it takes. heheh.

 

I'm not sure where I heard this, but I thought rotaries can safely go far over 10k rpm, but it's the other powertraing components that limit it, i.e. flywheel, drive shafts, etc.

 

On occasion while going around the track, corner markers or a simple apex of a street corner (sideways) the longest i've been bouncing off of fuel cut has been 30-40 seconds. My LT-8 is set to cut fuel at 8250 and i rev the engine CLOSE to that at least 6-8 times daily just driving.

Warning, i take no action or responsability for what will happen if you take your engine to this RPM on a daily basis. I've seen and heard stories of flywheels shattering and literatly ripping your feet/legs off.

Be carful guys, and unless your engine is BUILT for this sort of rpm, i wouldnt suggest doing so.

-Markus

 

I personally would NOT recommend this on any "stock" engine. Your theory is correct, the powertrain components cannot safely handle this type of "abuse"

-Markus

 

I remember reading somewhere that somewhere past ~9500 rpm the e-shaft starts to got warped from the extremley high speed of the rotors.

 

I've had my '87 N/A up to 8K several times during races. Never hurt the engine at all.

-Joe

 

If your stock rev-limiter still works, it shouldn't be possible to get the engine above redline. The computer just stops any extra fuel beyond the rev-limiter.

The only way to get past redline is to downshift at a speed past redline for the gear and force it to spin beyond redline.

Even cracking the throttle wide open for a minute or two shouldn't do any damage to the engine. It should just stick at the rev-limiter.

But if your car revs up to the rev-limiter for no apparent reason, I would worry more about what caused that than how much time it spent at high revs.

On the other hand, one of the Rx7 guys in my club was working on his racecar at Watkins Glen 2 or 3 years ago:

"The throttle stuck open and, like a dummy, I reached into the engine to try to fix it instead of turning the engine off. It was only a few seconds"

It didn't have a rev-limiter. The flywheel shattered and planted a few shards in his head, arms, legs, etc.

Luckily he lived.

ed