deep breath.....
Engines produce torque not Power. Power is ONLY a calculation from torque (measured at a given engine speed). Thus they are both related, but the physical property is torque.
A high torque low revving diesel will NOT out accelerate a lower torque but higher powered petrol car as the pertrol car runs lower gearing.
BHP is what matters for speed which is why it is used.
Think about it like this.
What is better for acceleration?
300NM @ 4000 RPM
or
600NM @ 2000 RPM
You may think the second but your wrong!
The first vehicle runs gearing twice as low to equalise the acceleration.
Thats why you use power which is torque * engine speed. Thus the two above are the same.
You can make a car accelerate faster by getting more torque at a given rpm (same gearing), or keeping up the torque to higher revs and running lower gearing.
No one will see which way MikeT went

as he runs low gears and has high power and torque! :lol: :badgrin:
Peter
