Jason James wrote:
>Yes,..my Arstina is like that,.. have to get it above 4000 rpm before
>the secondrys open and it will do something [vacuum controlled].
Indeed, the subsitute for cubes is revs (and always has been).
Further to which the maximum torque figure for any engine is
completely predictable. It's the product of displacement and
volumetric efficiency, further multiplied by the boost in the case of
forced induction engines.
For an n.a. petrol engine multiply its displacement in litres by 90
and you'll get within around 10% of the actual measured torque,
whether it be a Ferrari or a Model T Ford. The revs are what matter
since they're what makes the kW's.
The figure for n.a. diesels is around 75... ie they don't produce
nearly as much torque as petrol engines.