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      02-18-2013, 09:01 AM   #14
LarThaL
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Drives: 2011 M3
Join Date: Apr 2011
Location: West Springfield, MA

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Quote:
Originally Posted by Nautik View Post
Said best right here.

The best way horsepower vs torque was explained to me was: "Horsepower = Torque * Engine Speed"

And as far as performance of the M3 engine, it certainly is under-rated if you just look at the peak power of it. It is very smooth and delivers that power over a much longer period of time.

The Math gurus need to crunch a new formula to rate an engine which incorporates how much power was generated over a given amount of time. Maybe some kind of weighted horsepower figure.
The exact formula is hp =(torque in lb-ft * rpm)/5250. If you look at ALL power and torque graphs, they all cross around 5250 rpm. This is where power in hp and torque in lb-ft are numerically the same.
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