You name it, I’ve owned/driven it.
Domestic V8s?
'67 L88 Corvette
*drops mic*
😀
Excuse my ignorance, I thought a supercharger adds more "spinning" to "something"(crankshaft?Axel?) to make it run faster. I never know it adds more air like a turbo, I would still feel that air going back into the engine(turbo) is a safer install than adding another thing that spins with belts.
Right, so no forced induction bypasses the combustion process, they increase the power (i.e., torque) that's generated, by forcing more air into the engine during that same process.
To clarify, a turbo does not recirculate the same "air" that it uses to spin the turbine/compressor wheel, that's super hot exhaust gas. Basically as the engine releases the exhaust gas, it flows over the turbine, then out the actual exhaust system.
Both superchargers and turbos work like this:
Fresh/outside air >> air intake >> compressor >> engine/cylinders
A turbo spins that compressor like this:
engine >> exhaust manifold >> turbine >> cats/resonators/exhaust
A supercharger spins it like this:
engine crankshaft >> pulley >> turbine
(the exhaust process is no different that if the engine was NA (naturally aspirated).
Then systems have all sorts of flow control, wastegates, etc., to handle boost control and whatnot, which of course is tied into air volume monitoring, fuel delivery management, etc.
Additionally all that factors into things like __gearing__ for the final effective performance (gearing is so important, and so often not discussed, especially in the context of RPM ...)
I don’t have much experience with superchargers but I do know that I really like it on my Range Rover compared to Turbo cars. It just seems to be much more “ready” to go. Even compared to multiple turbos. Saying that I’m booking mine in to have a 10% reduction pulley and a remap for a little bit more power; should take it from just 510Hp to about 650 😍
I think all modern OEM superchargers are a PD style, that's where you have the compressor sitting right on top of the engine, it sort of combines an intake manifold - that's the same implementation as all the supercharged domestics (GT500, ZL1, Z06/ZR1, various Hellcat flavors). It uses two long tightly coupled impellers and outputs directly to the engine (vs. through an intake pipe), so there's always tons of positive pressure (vs. having to build it up), meaning a near instant increase in torque.
Of course, that also means in a RWD car, it can get squirrely really quickly.
😀
Most modern turbo cars went to two smaller (vs. one larger) turbos, create the same boost but with quicker response, all sorts of different tricks, twin scroll, etc., it's gotten really good in terms of immediacy of power delivery, but won't ever match a PD supercharger.
Turbos are, depending how you define it, "more efficient" in that they use what is in essence "waste gas", the supercharger actually costs HP, I think I've seen estimates of up to 100-125HP used to actually spin the supercharger, but that depends in the design, displacement, etc.
It occured to me that Ford offers cars with both turbos and superchargers, and in fact, it's in the same _model_ line: Mustang Ecoboost (2.3L I4 turbo), GT/GT350 (5.0L/5,2L V8 nat aspirated), GT500 (5.2L V8 supercharged).
That upgrade sounds fantastic, and that's of course, the amazing thing with factory FI, you're just a pulley, tune, maybe exhaust away from another 75-100 HP
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