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lundefinedl · 07-01-2009, 05:34 PM

I think the key is which engine, over it's use able RPM range, can do more total work.

Even though 250@3500 torque sounds better than 165@6800, it is not even close.

The reason 165@6800 is better than 250@3500 is because the force of the 165@6800 is being applied over a much greater distance ( A factor of 1.94 ). That means that the gearing for the S2000 would be alot better and it would on average produce power nearer to it's peak power.

Don't get me wrong, our engines have alot of torque and that helps them produce great power on average and not just at the peak, but 168 torque at 6800 is going to be very effective for a 230 horespower engine that peaks around 8000.

What it boils down to is that you can calculate acceleration with F=MA if you can figure out the average force that the engine produces. I think it is more likely to approximate the average total amount of work that an engine can do over its rpm range over a period of time, then calculate the total amount of work necessary to accelerate to some speed.

07-01-2009, 05:34 PM	#8
lundefinedl 1st Gear Member Join Date: Feb 2009 Vehicle: 2005 Ford mustang Location: MA Posts: 79	I think the key is which engine, over it's use able RPM range, can do more total work. Even though 250@3500 torque sounds better than 165@6800, it is not even close. The reason 165@6800 is better than 250@3500 is because the force of the 165@6800 is being applied over a much greater distance ( A factor of 1.94 ). That means that the gearing for the S2000 would be alot better and it would on average produce power nearer to it's peak power. Don't get me wrong, our engines have alot of torque and that helps them produce great power on average and not just at the peak, but 168 torque at 6800 is going to be very effective for a 230 horespower engine that peaks around 8000. What it boils down to is that you can calculate acceleration with F=MA if you can figure out the average force that the engine produces. I think it is more likely to approximate the average total amount of work that an engine can do over its rpm range over a period of time, then calculate the total amount of work necessary to accelerate to some speed. Last edited by lundefinedl; 07-01-2009 at 05:39 PM.