ok I am having some difficulties unerstanding the differance between turbo kits and supercharging, and the benifits from both. Any sugjestions or oppinions?

Victor Thompson
Scion sales manager
Scion lake city

check this out

http://www.scionlife.com/forums/viewtopic.php?t=8202&highlight=turbo+supercharger

http://www.scionlife.com/forums/viewtopic.php?t=6914&highlight=turbo+supercharger

http://www.scionlife.com/forums/viewtopic.php?t=5707&highlight=turbo+supercharger

http://www.scionlife.com/forums/viewtopic.php?t=4412&highlight=turbo+supercharger

http://www.scionlife.com/forums/viewtopic.php?t=1283&highlight=turbo+supercharger

super charges are better on the auto because they don't really have the problems with wheels spin on hard launchs that 5 speeds do. also turbo are better on 5 speeds because on hard launches the tires will spin in a 5speed and any one with a 5 speed XB or XA or any for that matter will know. however with a turbo by the time it really gets in to boost the car will be rooling about 10-15 mph so it won't really spin as much it'll just go I herd this from a guy how when to a track where they drove various scion's and this is what he told me.

Okay, it's real simple. A s/c is powered by your engine's belt. i.e. the same belt that pulls your a/c and whatnot. Now, as soon as you turn your engine on, the supercharger will all ready be providing boost. All you have to do is mash on the throttle. Where as a t/c is bolted on to your exhaust manifold. The reason being is that the turbo is split into two distinct housing, the compression housing and the exhaust housing.

These two housing are connected together via a small metal shaft. So, when one side spins, so does the other. So, as the exhaust gas is leaving your engine, it is turning the fan blades on the exhaust side of the turbo. As the exhaust side turns, it causes the compression side to begin spooling up. The spooled up air then goes through all of the proper tubing to the i/c and whatnot, then into the cylinders for more power over stock.

Now, as far as the differrent advantages go, a supercharger is much more practical than a turbo in that it provides you with near instant boost, whereas a turbo needs a little time to spool up, depending on the size of the turbo that you are running. Also, unless you plan on running more that 6 psi of pressure through the s/c, there really isn't any need for an i/c, although i'd through on just in case. However, a s/c just cannot match the power output that a descent sized turbo can put up, at least not to my knowledge. After all, there are exceptions.

As for a turbo, no matter how much boost you plan of running, you ALWAYS need an intercooler. Anyone that tells you otherwise is a complete idiot. The reason being is that if the turbo is spooled up by the exhaust gasses leaving your engine block, your turbo, as well as the air that it is spooling up, would get quite hot, now wouldn't it? So, you always have to intall an i/c as well. Also, a complete turbo kit has a lot more parts to install over a s/c. Again, however, there are exceptions. Also, as a rule of thumb, the larger the turbo, the longer for spool up. Always remember that. Afterall, an HKS GT3240 turbo running 27 psi isn't going to spool up as fast as a hybrid T4/T3 turbo only running 7 psi. On top of that, turbo kits generally take longer to tune properly over s/c. Yet again, I do say, there are exceptions.

All in all, a s/c or a t/c is well worth the investment. Just make sure you figure out WHY you want one, and how you plan on running it.

As for a turbo, no matter how much boost you plan of running, you ALWAYS need an intercooler. Anyone that tells you otherwise is a complete idiot. The reason being is that if the turbo is spooled up by the exhaust gasses leaving your engine block...

The heat of the intake charge is from the act of compression. There is this same problem with Superchargers as well. A properly sized intercooler will help a turbo make more power, but it will not make the car any more reliable when running lower pressures.

Now, like was said... there is exceptions to all of this... intercoolers are pretty much a must after 10psi.

Uhhhhh....the intake charge is heated up by BOTH the compression as well as the exhaust gases. And since the exhaust housing is connected to the compression housing....if one side heats up, the other side pretty much will as well. That's why even if you aren't running a high compression through your turbo, the extremely hot exhaust gases are more than enough to raise the ambient tempurature of the air passing through the compression housing. Therefore, by running an i/c, even at low psi levels, allows you to at least try and cool down the ambient tempurature of the air before it reaches the cylinders.

For example, if I run a single T4 turbo at only 4 psi without an i/c, the exhaust gases will be more than enough to raise the air temp by more than just a few degrees. Now, by running a dual core air to air i/c along with it, it will counteract the increase in air temp from the turbo. But hey, everybody has their preferences.

Anywho, thanks for the input. 8)

Get a turbo. Lot more efficient than a positive displacement supercharger. You can get good efficiency with a centrifugal SC, but those types suck. They make their highest boost at peak engine RPM. With a turbo, it's likely that you'll hit full boost much much sooner than peak engine RPM. Ease of installation -- either or. They're both about the same level of difficulty. Tuning -- same... one isn't any easier than the other. You'll make more power with a turbo though.

Oh yeah, and you don't always need an intercooler for a turbo. A lot of guys making 1000+whp don't even use IC's. ;)

Uhhhhh....the intake charge is heated up by BOTH the compression as well as the exhaust gases. And since the exhaust housing is connected to the compression housing....if one side heats up, the other side pretty much will as well. That's why even if you aren't running a high compression through your turbo, the extremely hot exhaust gases are more than enough to raise the ambient tempurature of the air passing through the compression housing. Therefore, by running an i/c, even at low psi levels, allows you to at least try and cool down the ambient tempurature of the air before it reaches the cylinders.

For example, if I run a single T4 turbo at only 4 psi without an i/c, the exhaust gases will be more than enough to raise the air temp by more than just a few degrees. Now, by running a dual core air to air i/c along with it, it will counteract the increase in air temp from the turbo. But hey, everybody has their preferences.

Anywho, thanks for the input. 8)

True, but spooling times are also increased when you install an intercooler. If you don't get too out of hand, you're OK, Problem is, most people get pretty out of hand with them....

This is going to be an never ending topic, and instead of trying to sway your decision with MY OPINION, i will just tell you this.

Please find a person with a S/C car. Any car.. take a ride in it.

Please find a person with a turbo, (eclipse and WRX turbos and are usually the easiest to find) then take a ride in that. You will find the difference out that way.