Quote:
Originally Posted by serialk11r
Hey something I just thought of that I'd like to know:
What does tuning an engine for torque at higher rpm constitute?
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What do you mean?
Peak torque can be associated with a certain intake air velocity. Intake velocity is affected by port size, stroke and rpm. Smaller ports generate more velocity, but generally flow less. So as designers open the ports for more flow, the velocity slows down. So more rpm is needed to flow a certain amount of air at a certain velocity. This relationship can be seen by looking at the evolution of the 3SGE from old Celicas to the BEAMS 3SGE. BEAMS makes more torque and power, but the rpm needed is much higher for both. There's other stuff like combustion efficiency, wave tuning and stuff, too.
I realize this is kind of rambly, ask for clarification after I get over my 'I might become a Scion owner' trauma...