crossev

I have a question when it comes to RPM's the RX-8 has an higher redline compared to the 350-Z and the G35 coupe. What does this mean and how does it affect the car.




Thanks

khoney

Makes it more fun to drive :D

5Gen_Prelude

Assuming your engine can work efficiently at that RPM, you can produce more HP the higher the RPM is. There gets to be a point where you can't rev any higher effieciently cheaply, thus lower redlines for other engines. When you compare the designs of a piston engine and a rotary engine, it's pretty clear that it's easier to rev a rotary since you're not pushing the pistons in, then out.

The other advantage of a higher redline is that you can use gearing to your advantage.

dcfc3s

The only thing really holding the rotary back from having an even higher redline is the belt-driven accessories - AC compressors and alternators don't like spinning at insane RPM's.

You also start sacrificing low-end power and driveability for higher RPMs. The variable intake ports and the like are why the '8 is as driveable as it is with a 9000 RPM redline. To make power up top, you really need to be able to get air in and out of the engine efficiently!

Dale

rotarygod

If you don't have forced induction or nitrous there are only 2 ways to get more power (porting being equal). One way is to increase displacement and the other is to increase rpm's. We definitely don't have the displacement.