If the engine could run at more than 9000 RPM, why not....
 

I've been wondering something lately. If the engine is able to run at even higher RPMs than it currently is allowed to stock, is there any reason why not?


The standard answer is 'because the gearbox and clutch can't handle the higher RPMs'. Fair enough.

So why not simply have a 2:1 reduction gear right on the output shaft of the engine? 9000 RPM becomes 4500 RPM in this case, just with a whole lot more power and torque than is normally available at that rev.

Is there some reason why this idea is fatally flawed?

yeah, it's flawed because you're peak power is not at 9 or 10k rpm.

Engine stops breathing at 8200.

by whos standard ? It has already been proven that we can go to 9500 ish but as the others have pointed out , there is not much point as the power drops off at that level .

yes that is a flawed argument - your overall gear ratio is what counts . IE gearbox,diff & wheel diameter all contribute to the final speed vs RPM of the motor .

no power over 9k

This is pretty basic stuff. I guess you don't learn anything if you don't ask :)

You can feel the car stop accelerating as quick when you get up towards redline.

Then again, I love the feeling of the last intake ports opening right above 7k. It's like the car SLIGHTLY bucks then kicks you back in your seat. Ahhhh....wait, doesn't Cobb AP fix that?

Someone told me that it's because the rotors spin too fast for the fuel to fully burn and you get backpressure from fuel completing combustion in the exhaust cycle.