Difference Between A Compressor And A Turbo?

[Compressor1]

Hi, I am new to this website.

I am thinking of getting a Corolla T-Sport TTE Compressor and have been discussing with my friends. However, they seem to tell me that there isnt a great difference between a compressor and a turbo (question not specifically directed at Toyota models, just the difference between the 2).

Can anyone give me the complete differences between the 2?

Cheers all..!!

[T600]

Welcome.

Strengths and weaknesses vary according to the method of forcing induction largely based upon the inherent design functions of both. A turbocharger acts as an obstacle to exhaust gases due to its placement in the exhaust system tract. A supercharger uses torque generated from the rotational mass internal to the engine through the crank pulley. A turbo relies on the volume and velocity of exhaust gases to spool, or spin the turbine wheel. The turbine wheel is connected to the compressor wheel via a common shaft. The compressor wheel compresses the intake charge increasing the charge density by a large factor. The amount of time that it takes a turbocharger to reach the onset of boost is referred to as lag. A supercharger is 'on' all of the time, meaning that it is capable of producing a linear increase of boost up until redline. It is easier to target a desired boost with a turbocharger as there are many forms of boost controllers that allow a user to adjust to desired boost fairly easily. In order to achieve desired boost with a supercharger, a larger or smaller pulley must be installed.

[Fizz]

I would go into detail but this does it better than me...

Well, one major difference is price. Superchargers can start at $1500, while turbos can be only a few hundred.

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.

http://www.answerbag.com/q_view/39634

[Compressor1]

Cheers peeps, great help!!

It looks like i am going to buy it anyway but this confirms my understanding.

[T600]

Not trying to put you off, but read a few more threads on the Compressor before you commit.

For example, you're aware of the need for top quality fuel, or else an octane booster for these beasts aren't you?

I think the compressor engine is a fine piece of machinery, and I would buy one, but I've seen a lot of people buy them and then sell them on again quickly for one reason or another. If it's what you want, then fine, but there are some issues.

[Compressor1]

T600 - Thanks for the heads up. ;)

Apart from the fuel problem, is there anything else that i would need to be aware of.

I have seen a good few on sale with low mileage - maybe the reason why people are getting rid before the 1st or 2nd service...?!?!

[ae102]

T600 - Thanks for the heads up. ;)

Apart from the fuel problem, is there anything else that i would need to be aware of.

I have seen a good few on sale with low mileage - maybe the reason why people are getting rid before the 1st or 2nd service...?!?!

i wouldnt recommend an octane booster - stick with v power. t sports/compressors have lots of lil niggles which some toyota dealers arent sorting so owners become dismayed and sell on. the compressors also seem to have a lot of problems the t sport doesnt - check the t sport forums. also these cars attract a certain kind of driver! alot of people can afford a new car everyear and trade in for something newer - my concerns when buying a nearly new performance car is how much mechanical sympathy would you have if you are only keeping the car for a short while. very nice cars tho but dont expect the usual trouble free motoring toyota's are famed for.