Quote:
Originally Posted by Mark Henry
Is the torque numbers also down? As an engine builder torque has always been more important to me than HP numbers.
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As the real issue with 911s running high compression pistons is plug shrouding which will prevent combustion crossing the top of the piston at high engine speeds the effect will be reduced peak cylinder pressure due to incomplete combustion and this must impact on the torque being produced.
It is less important at lower engine speeds.
Early 2 litre engines are mush more adversely affected due to the deeper combustion chamber and taller piston crowns.
It will also limit engine speed which will have a significant impact on Horsepower.
The torque vs horsepower argument will never end but in reality I think that they are just two sides of the same coin.
For a race car I would always chase Horsepower matched to optimum gearing.