Difference between these performance car modifications?
March 13th, 2010 by , under nnmj.com.
The second major difference is the way in which they work. Turbochargers are attached to both the intake and exhaust systems, and consist of two turbines. The exhaust that comes out of the engine under pressure spins the exhaust turbine, which in turn spins the intake turbine. This forces more air into the engine (specifically the cylinder), allowing more fuel to be added, and therefore more bang for every explosion in the cyliner. It does not rob the engine of any power and is common on big diesel engines to add power.
Superchargers are belt-driven. This means that they are connected directly to the engine and driven by the belt that connects to the crankshaft, A/C, alternator, etc. on the front of the engine. They sit directly on top of the engine. The 'blower' as they're called, forces air directly into the intake manifold under more pressure than a turbo. This results in more air being forced into the cylinder, more fuel being added, and subsequently even more bang per explosion.
This is referred to as 'boost' for both chargers.
1st of all costs: both are expensive (extreme power does not come cheap)
here are typical bolt on supercharger - common kits
http://www.ninosport.com/FRPP-Whipple-Su...
http://www.sfxperformance.com/parts/VORN...
overall typical supercharger installation is approx $7000 including proshop time.
You can search out price of a turbo installation, but generally they are more expensive because of the extra fabrication &/or plumbing they require.
-both a supercharger & a turbo serve the same purpose-to force large quantities of air into the fuel mix of a properly prepared engine.
-both operate on demand at what's known as WOT (wide open throttle, kind of like passing gear in a normal car). they are PASSIVE systems and do not operate during normal driving
-both are meant to produce exceptional increases in horsepower for short periods of time
the VOLUME of air forced into the system is measured in PSI (pounds per square in) and this extra volume is measured by a BOOST GAUGE
in basic terms a turbo is more efficient. A turbo charged system functions off of 1 (or in some cases two-twin turbos) which is nothing more than an air turbine. the air turbine is driven by waste / hot exhaust from the engine.
the supercharger is a mechanical system driven by belts & pulleys from the engine itself.
generally for the car world turbos are used in high boost applications, or where there is limited space in the engine compartment.
for lower-mid boost applications generally a supercharger is more effective, because its lighter, runs cooler, easier to install & cheaper.
superchargers tend to deliver their boost earlier and in a more linear fashion. turbos tend to deliver their boost with lag & then in an extreme rush.
there is a specific formula for calculating how much power increased levels of "boost" provide to an engine, but serves no purpose describing it here...(if you want that information write to me i canprovide it with an explanation) i will give you some specific examples.
.low boost (say 5-6lbs), will produce an increase over stock engine's power of approx 35% - so if your engine was 200hp before you started, then you added a supercharger or a turbo with boost capability of 6lbs, at wide open throttle you would increase your engines performance to approx 275
.power gains are incremental, so mid boost, say 15lbs would provide a gain of approx 100%
in all cases these systems create extreme heat and pressures on an engine & the engine to run these extreme numbers must be properly prepared with race ready equipment, forged internals, etc.
if you get on you tube you can see some examples of extreme power as a result of turbo or supercharging (ip to 1000rwHP)
2of my favorites
http://ca.youtube.com/watch?v=WB0cuYujW5...
http://video.kenblockracing.com/flash/sm...
cheers 04 cobra (supercharged, whipple blower 15psi, measured on a dyno at 575rwHP)
http://www.cardomain.com/member_pages/sh...
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