Quote:
Originally Posted by Ash_89
I don't think I have that good a grasp on how the attributes (bore, stroke, displacement, redline, etc) of engines determine its character but would the new 2.4L engine be able to rev up to 9000RPM without being torque light down low?
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They had a problem to keep the 2.4L engine even in the same revs like the 2.0L engine. First development engines had a lower redline, but they were afraid that it won't be accepted and they fixed it. One issue was the extra weight of the pistons and rods, so they had to convert to the old (EJ- engine family) rod design to keep the weight down and the other issue was the breath of the engine. For the latter they had to go with a shorter and bigger intake manifold which hurts the torque in low-mid revs, but it is not quite noticeable cause of the bigger displacement.