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When To Shift?

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Old Dec 2, 2003 | 05:00 PM
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Default When To Shift?
When drag racing, illegally/legally is there any way to know when the optimal shifting point is for your ride? If so how can one find it??

Thanx
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Old Dec 2, 2003 | 05:11 PM
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Shift at redline.
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Old Dec 2, 2003 | 05:28 PM
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IS that how you conserve the most power?

and don't hate noobies, we got a learn some how!
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Old Dec 2, 2003 | 06:08 PM
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put it on a dyno and see where the power and torque begins to fall off, then shift just before that point.
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Old Dec 2, 2003 | 09:29 PM
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Ideally, you should shift so that the RPMs fall right at, or slightly after your peak torque in the RPM band. The only way to find that point, however, is by way of a dyno plot, or lots of experiments.
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Old Dec 2, 2003 | 10:13 PM
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isnt that usually AROUND 1.5k RPM before redline? or on the dyno's ive seen it was. and on my 200sx it is around 1k i can feel a GREAT loss in Hp n torque.. maybe cuz its 19 years old. but yea.
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Old Dec 2, 2003 | 10:29 PM
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Hey thanx a lot, all these comments really helped clear things up
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Old Dec 3, 2003 | 05:47 AM
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Originally posted by RboYi
isnt that usually AROUND 1.5k RPM before redline? or on the dyno's ive seen it was. and on my 200sx it is around 1k i can feel a GREAT loss in Hp n torque.. maybe cuz its 19 years old. but yea.
Depends on the engine, but yeah, usually, because automakers set the gear spacing for you so that if you run to redline and shift, you're right back on top of your powerband.
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Old Dec 5, 2003 | 12:59 PM
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Originally posted by RboYi
isnt that usually AROUND 1.5k RPM before redline? or on the dyno's ive seen it was. and on my 200sx it is around 1k i can feel a GREAT loss in Hp n torque.. maybe cuz its 19 years old. but yea.
On my 94' accord its redline is 6300 and the power tops out at about 5200...so i shift right around 5k so maybe what you heard about 1.5k before redline is correct, dont know...
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Old Dec 5, 2003 | 10:46 PM
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Originally posted by pirate252
On my 94' accord its redline is 6300 and the power tops out at about 5200...so i shift right around 5k so maybe what you heard about 1.5k before redline is correct, dont know...
Usually you want to shift so that your rpms drop into your powerband once you hit the next gear.
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