- Apr 2, 2007
- No, sleep, till, BROOKLYN
- 11 Xterra Pro-4x, 12 'stang GT
Oh I wasn't saying that turning off half the engine is a good idea, I was just saying that turbo isn't really all that efficient either. Especially under acceleration, where in a bigger engine you could get away with lower RPM's with a turbo before boost kicks in they tend to be pretty useless. After all boosted cars tend to have pretty low compression, which means you basically have to boost for overtakes and getting onto the highway.A turbo or supercharger is still better than effectively shutting off half an engine, you don't get problems with friction or vibration. When you think of it, the idea is silly.
If a car needs a certain amount of power to go a given speed, the most efficient way is the simplest, use the lowest revs possible. For example, say you need 15hp to go 50mph, a V8 at 1,200rpm is more efficient than a smaller I4 at 2,000rpm. That's what happens with cylinder deactivation, it's just marketing nonsense.
They really need to work at reducing weight. Extra weight ruins everything.