YACT: Twin turbo setup

[jtvang125]

On a twin turbo engine, does each turbo feed half of the cylinders and the other turbo feeds the other half? For example on an inline 6 engine, one turbo for 3 cylinders and the other turbo for the other 3. Or would the output of both turbos be combined to feed all 6 at the same time?

 

[arcenite]

There are two types of twin turbo setups...

Sequential: Smaller one spins then bigger one spins when rpms get higher (both cover all of the cylinders)
Parallel: Both spin at the same time (they split up half the cylinders)

 

[Papagayo]

You can do both..

 

[thirdeye]

On an I6 like the Supra or Skyline they are Sequential (smaller feed the larger turbo)
On a V6 like the 300zx or the TT kits for the new Z they are parallel (1 turbo per side or 3 cylinders)

 

[nakedfrog]

Originally posted by: arcenite
There are two types of twin turbo setups...

Symmetrical: Smaller one spins then faster one spins when rpms get higher (both cover all of the cylinders)
Parallel: Both spin at the same time (they split up half the cylinders)

Did you mean to say sequential?

 

[AdamSnow]

Originally posted by: arcenite
There are two types of twin turbo setups...

Symmetrical: Smaller one spins then faster one spins when rpms get higher (both cover all of the cylinders)
Parallel: Both spin at the same time (they split up half the cylinders)

Correct.

 

[arcenite]

Originally posted by: nakedfrog

Originally posted by: arcenite
There are two types of twin turbo setups...

Symmetrical: Smaller one spins then faster one spins when rpms get higher (both cover all of the cylinders)
Parallel: Both spin at the same time (they split up half the cylinders)

Did you mean to say sequential?

yes!

 

[arcenite]

dp

 

[PHiuR]

Sequential Turbos BOV sounds HOT.

 

[swtethan]

i like bi turbos

 

[loic2003]

I like the idea of a supercharger AND a turbo: low down grunt from the charger, then a nice boost at higher RPM from the turbo.

Happy days.

 

[arcenite]

Originally posted by: loic2003
I like the idea of a supercharger AND a turbo: low down grunt from the charger, then a nice boost at higher RPM from the turbo.

Happy days.

VW actually did this

 

[Zenmervolt]

Originally posted by: thirdeye
On an I6 like the Supra or Skyline they are Sequential (smaller feed the larger turbo)
On a V6 like the 300zx or the TT kits for the new Z they are parallel (1 turbo per side or 3 cylinders)

Um, it's not dependant on engine configuration. There have been several "vee" engines with sequential twin turbocharger setups. The most prominant being the Porsche 911 turbo (technically a flat engine is a 180 degree vee) and the Porsche 959.

In general it is easier to plumb a sequential setup for an inline engine and a parallel setup for a vee engine, but you can run either setup on any engine configuration.

ZV

 

[Horus]

You've also got the rotary turbos. They tended to be sequential.

 

[Zenmervolt]

Originally posted by: Horus
You've also got the rotary turbos. They tended to be sequential.

There is absolutely zero practical difference between a turbo used on a rotary engine and any other turbo. Rotary engines do not use any special subtype of turbo.

As I pointed out above, the type of engine is completely irrelevant since any arrangement of turbos can be used on any engine. It's just a matter of engineering the exhaust routing properly.

ZV

 

[cross6]

Big diesels often have a turbo and a supercharger