Quote:
Originally Posted by kunkelz28
Torque !!!!!! It means you could have fat girls in your car and it will still be fast
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...and I like hauling those fat girls around fast.
While more displacement makes more torque, all else being equal, you also make more torque by having more cylinder pressure. That's accomplished by better filling of the cylinder, and by upping compression ratio. Want more torque..? Fill your cylinders better at all speeds (variable cam timing, optimized valve and port sizes and angles, extraction through exhaust, etc.), squishing your air/fuel into a smaller space, and lighting off the mixture sooner, so that it produces a bigger boom.
GM could do the same with their engines as far as breathing, but it's always been the cheapest, easiest route to increase displacement.
Problem with that is, the engine still is not quite as efficient, and will pollute just a little more.
On the plus side - in the long run, I think the less-stressed larger engine could be less trouble, and less expensive to maintain.
40 years ago, around 100 HP per liter was the standard for a N/A full race engine. Ford's new 5.0 is still much less than that, but it's getting closer. It's comparably efficient for a mass-produced street V8.
Writing on the wall tells me that we're nearing the end of our advancement in V8 internal combustion technology. Not because there isn't more to learn, but that other technologies are now catching up, and will prove more efficient than internal combustion ever could be.
It won't be long before we can buy 12 second
electric muscle cars.
Keep those fat girls happy.
