so if l wanna buy a turbo for my 1991 nissan 240sx what are the extras that would have to go with it, and how much am l looking for a price? its just for a casual recreation purpose but l want some more go thanks a lto

TURBOCHARGER This is where the fun stuff happens. A turbo is a snail-shaped, two-chambered air pump that uses exhaust flow to spin a turbine which, in turn, spins an impeller that compresses intake air on its way into the combustion chambers. In order to maximize efficiency, the impeller that compresses the intake air is larger than the turbine. Turbos come in a number of sizes & with various options & configuration choices. If you're curious about these options, check out Kid Turbo is article on turbochargers. If you're buying a pre-configured turbo kit, there is no need to worry about turbo options. Manufacturers like GReddy, Turbonetics, HKS, HotShot, & others have already weighed all the options & chosen the best turbo for ur specific application. If you're buying a turbo on its own, u should be aware that not all turbos r appropriate for every application. Some of the larger ones require more exhaust flow to efficiently spin the turbine than can be produced by a small-displacement engine. Bigger is not necessarily better!


INTERCOOLER An intercooler is a radiator-like device that cools the intake charge before it reaches the throttle body.The nature of a turbocharger causes it to heat the intake charge significantly. If you've read Kid Turbo is article on cold air intakes, u know that a cooler intake charge is preferred for safety & performance reasons. Many auto enthusiasts incorporate an intercooler in their turbo system to provide the coolest, densest intake charge possible.


DOWN PIPE The downpipe connects the exhaust outlet of the turbocharger to the rest of the exhaust system. Once the exhaust flow has been routed through the turbine, it exits the turbo & flows through the downpipe to the catalytic converter & exhaust. Downpipes r relatively simple—they're not much more than a pipe with a flange at either end. Some downpipes also have a side flange to accept a dump pipe from an external wastegate (see below). Downpipes r typically have wide diameters because they r designed to evacuate exhaust as quickly as possible, thereby increasing the efficiency of the turbo.


WASTEGATE Turbos, by their very nature, tend to spin faster & faster as long as exhaust flows through them. If left unchecked, the turbo will accelerate to the point of overboosting. A wastegate regulates boost by keeping some of the exhaust flow from passing through the turbine once boost reaches a pre-set level. Usually, the wastegate is set at the maximum desired boost pressure—say, 8 PS l for a typical application—with a spring or a set screw. Wastegates r either internal, in which they r built into the snail housing of the turbo, or external, in which they r installed in between the exhaust manifold & the turbo. Smaller turbos typically incorporate an internal wastegate, while large turbos meant for high-volume applications usually require an external wastegate with larger bypass capabilities. If ur turbo kit does not come with a separate wastegate, it is most likely an internal unit.


BLOW-OFF VALVE A blow-off valve is a device that provides an escape for high-pressure intake air to vent back to the atmosphere when boost is not needed. At high RPMs, a turbo compresses an enormous amount of air, which continuously enters the engine via the throttle body. The compressed air has someplace to go as long as the throttle remains open, but once u lift ur foot off the gas to shift or slow down & the throttle plate closes, the high-pressure air still needs to go somewhere. The blow-off valve vents the pressurized air to the atmosphere or back to the intake system. When operating under racing conditions without a blow-off valve, the intake air could back up into the turbo unit & cause a backspool, likely damaging the turbo internals.


BOOST CONTROLLER A boost controller, as its name implies, regulates the boost level of a turbocharger. It does this by manipulating the boost pressure level at which the wastegate activates. The boost controller allows higher boost levels than the wastegate would normally allow by bleeding off excess boost pressure before the wastegate is activated. The boost controller, in effect, determines the maximum boost to be generated by the turbo. Boost controllers r available as manual units, which r generally cheaper & provide an approximate level of control, or as fancier electrical units which allow for very fine control from the driver is seat.
Boost Gauges BOOST GAUGE A boost gauge is an accessory item that displays intake air pressure in pounds per square inch (PSI) inside the vehicle is cockpit. While not necessary for a basic turbo installation, a boost gauge is very useful for monitoring, tuning, & troubleshooting a turbo system is performance. And besides, it looks really cool, especially when mounted on an A-pillar!


TURBO TIMER A turbo timer allows u to shut down ur engine, remove ur key, lock ur doors, & leave ur car while the engine idles, allowing ur turbo to cool down in a controlled manner. After a few minutes, the engine shuts off automatically. Turbos get extremely hot—as much as 1,500 degrees Fahrenheit! Like most engine parts, a turbo requires oil & coolant feeds to keep its internals cool & lubricated. When u shut down ur engine, any oil & coolant that is left in the turbo gets exposed to extremely high temperatures for a prolonged period of time, breaking down their protective properties.

Well u need the turbo (of course!) & a intercooler to keep the engine cool because the turbo will be putting some pressure on it.

Then u need the piping, a new exhuast manifold to connect the turbo to, turbo timer, wastegate, blow off valve, u will need to update the ecu to mix the fuel/air correctly to get the best performance out of it.

Depending on ur psi u r wanting to use, u may have to get bigger fuel injectors to supply the fuel for the engine.

And then there r a lot more things u can do as well.. ;)

It is a very expensive upgrade for a car!

well idk what to tell you about that but have fun trying to founding that out

Intercooler

Buy a Turbo kit.
It comes with everything you need to make a turbocharger work and not overheat your engine such as the intercooler and cold air intake.