Because 9000K is a lot more fun than 8300K.

 

[QUOTE=MikeyCB,May 16 2007, 04:12 AM]Yeah that's why didn't get the automatic S2K.

Plus it was $1K more expensive

 

What tires are you running? I used to have 4.77s along with CAI, J's header, T1R 70mm single, VAFC2, and 210 pounds of weight removed. I still never had traction problems with my 255 rear Azenis at the time (I now have 275)...

 

love your avatar or whatever its called, WOO WOO!!!!

 

 

uhh easy answer... cuhz u dont want to waste gas.... stay under 4k folks.... gas is gonna kill specially if u live in cali

 

You don't need to shift at 9000 to stay in VTec range. You just have to know how to work the clutch. Rookies.

 

No, you want to maximize area under the POWER curve. Shifting to maximize acceleration, you should be beyond the hump in the torque curve, in fact you may ALWAYS be above peak torque rpm. What matters is torque TO THE WHEELS, which will always be maximized by operating at maximum POWER.

Power is the same at the wheels as at the engine (minus losses of course), whereas engine torque is VERY different from wheel torque, totally dependent on gearing. And being in a taller gear than necessary hurts acceleration, even if the *engine* is making more torque (but less POWER).

This link will make everything abundantly clear:

http://www.simpsoncrazy.com/download...c/maxpower.mp3

 

I try to shift before 8500 because my HP curve starts to go down after that point.

 

Read the earlier posts.

Compare the hp above 8500 vs. what it is in the next gear. At 8500 you've dropped from a peak of ~195rwhp at 8300 to ~185hp. If you shift at 8500 from, say, 3rd to 4th, rpm drops to ~6700rpm, where power is ~165. You'd be better off keeping it in 3rd all the way to redline, even if power is dropping off. Because the reduced power between 8300-9000 is still more than you'd be making in the next-higher gear.

It really depends on the car and the gears. Most cars should be shifted at redline, but for some you *will* want to shift earlier in the higher (closer) gears.

With an S2000, I guarantee you're slower shifting at 8500.