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Old 02-27-2023, 12:21 AM   #10 (permalink)
cRiPpLe_rOoStEr
It's all about Diesel
 
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Quote:
Originally Posted by Piotrsko View Post
In one of my reference books from the 1960's there is a graph that indicated peak torque occured around 2/3 of maximum hp in terms of rpm.
Variable valve timing, and more recently variable-geometry turbochargers, are changing the game.


Quote:
But that was for rather inefficient large displacement low revving carburated gasoline engines and has probably been superseded in the succeeding 60 years.
Reminds me of the first 16-valve 1.0L engines of late-'90s in Brazilian "popular" cars, which had peak torque way closer to peak power RPM compared to their 8-valve counterparts.
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