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Forced Induction Turbo, Supercharger, Methanol, Nitrous


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Old 06-09-2021, 07:04 PM   #253
86TOYO2k17
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Originally Posted by BrahmaBull1990 View Post
Ahhh understood. So wringing it out to 7k vs 6k isnít adding more wear? Keep in mind this during a pull. City driving Iím a piker around 4.5k
Lugging, overall temps, and overall power are substantially a much bugger factor than revving to factory limiter. As long as you donít have oil starvation, valve float, or lifting a head which you most likely are not then shifting at 6,300 vs 7,300 wont make much difference. Your actually making less engine torque at the higher rpm anyways. Let her rev out she wants it. Just donít bang limiter.
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Old 06-09-2021, 07:27 PM   #254
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Stock limiter is 7,400 most tuners raise to 7,500.
Shift 50rpm before limiter. Shift at the last possible moment to still not hit limiter/fuel cut but rev as high as possible.

I specified mechanical torque to the wheel.
Not torque or hp on a dyno graph.

Mechanical torque is calculated after all gear ratio, wheel size etcÖ are factored in.

You want to shift gears at the RPM when the current gear you are in has LESS mechanical torque at the wheel than the next gear will have at the RPM it will land in after shifting.

On most cars the mechanical torque to the wheel is always higher in the numerically lower gear all the way to rev limiter. Youíd need to make like 400ft lbs at 5k and 200ft lbs at 6,500rpm to benefit from short shifting. A 20-30% drop in torque is more than made up for by torque multiplication through numerically higher gearing.
Thank you! Iím learning, bit-by-bit. Thank you for the help and patience. I need to get over my fear of revving it out. I went FI to have fun and let this car live! Saving for a IAG short block now haha
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There's a point at 7,000 RPM... where everything fades. The machine becomes weightless. Just disappears. And all that's left is a body moving through space and time. 7,000 RPM. That's where you meet it. You feel it coming. It creeps up on you, close in your ear. Asks you a question. The only question that matters. Who are you?
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