dumb question perhaps but....



1. What is the porpose of those purple inlets on the turbo?



2. What is the porpose of the cylindrical crome covers on the exast housings?

pic?

From what he said, I will take a guess.





The purple thing sounds like an air horn. It basically straightens out the air going into the compressor. Supposedly makes it flow better.





The chrome cover over the turbine housing sounds like a heatshield.

god damn it!! I did it gain, I really need to sleep more, sorry guys, here is the pic:



http://www.sp-power.com/images/media..._supra7_07.jpg

IF those are heatshields wouldnt they prevent the housing from cooling beetter and thus make the turbo run even hotter?

You want the turbo to retain as much heat as possible. Heat = Energy. So wrapping it with insulation will make it more efficent.

that makes no sence. Turbos are spooled by the pressure of the exast gases, not their temperature, you can blow whatever you want through the exast housing to spool the turbo hot or cold. The only way I can see how heat helps is when thingsare hot they expand, so with hot gasses you would need less actuall gas (then cold gases) because the voluem will be bigger. But that means the temp of the gasses ENTERING the turbo play a key role, when inside heating them up seem rather pointless because by the time they will they will be out of the turbo already. I dont know, just trying to reason it out....

The exhaust gas is already hot, you aren't heating it more by insulating the turbo. You are keeping the energy inside of the turbine housing instead of letting it just go wherever it wants. I can't really explain it any better.





Someone else will have some ideas.

Gasses (exhaust included) contract as they cool. By letting the exhaust gas cool, it loses energy that could have been used by the turbo.

You are thinking WAY too hard.