Dumb Q #1: Benefits of Larger Turbo

GTti

GTti

Member +
So I can instantly tell that he can't of been running the same:

Fueling
Manifold
Downpipe/Exhaust
Intercooler

How is that a comparible test?

If you bolt a TD04 onto stock setup without changing anything then it will not make any more power at 9psi. It'll be the same, only at higher boost when the CT9 runs out of puff.
 
Rory

Rory

Lifer
Im not arguing preasure, im stating there will be more volume as the turbo is bigger.
Volume and preasure are 2 diffirent things.

Im not on about engine size either, size of turbos......

Back to the tyre's,
What will run out first, tha car or bike tyre, when you let the air out?
 
Dan3SGTE

Dan3SGTE

Member +
GTti said:
So I can instantly tell that he can't of been running the same:

Fueling
Manifold
Downpipe/Exhaust
Intercooler

How is that a comparible test?

If you bolt a TD04 onto stock setup without changing anything then it will not make any more power at 9psi. It'll be the same, only at higher boost when the CT9 runs out of puff.
Click to expand...

that is true but presuming both the CT9 and TD04 had sufficient fueling to run 9PSI, you still think they would make the same power?

You see supras ect running huge turbos and making ridiculous power at 1BAR... but on a smaller turbo running same pressure they cant make the same power.........

I do see your technical side to what your saying but i truly believe you are wrong this time :)

This is a subject that has been proven, that on a larger turbo on the same pressure you will make more power.. providing its at a reasonable pressure not 0.5bar etc...... larger turbos do like working better with more pressure i will agree....
 
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Adam_Glanza

Member +
i cant see how he doesnt see the difference?

you could take a ct9 on standard ecu etc etc.

and just swap it for a hybrid at same boost and still make more power.

the bigger the turbo the more air the turbo is pumping in

think of the fans!!!!
 
GTti

GTti

Member +
You're missing the point you have to change everything to run another turbo...

I think it's physically/mathmatically impossible for the turbo to create more air mass at the same temperatures and pressures - because the air mass is calculated using density.

The only variable is temperature, and the larger compressor will only start to make more power above the smaller compressors efficiency.


I would like some other input on this.


There is no difference between me blowing down the hose and creating 1psi at the MAP or a boeing jet engine blowing down the intake and creating 1psi assuming temps are the same.
 
GTti

GTti

Member +
As below:

TurboFlow.jpg
 
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Adam_Glanza

Member +
in theory maybe but in real life a piece of pipe is to small a diameter.

now if that jet engine had all its power concentrated into the pipe then yes it would.
 
GTti

GTti

Member +
Adam_Glanza said:
yes there both pumping 9 psi.

but in that pressure the td04 is cramming more air
Click to expand...


It's pushing 9psi of air pressure in easier (It doesn't need to spool as much to create the same pressure), but it is not 'cramming in more air' at all!
 
GTti

GTti

Member +
Yea only at 13psi or more where the CT9 starts to think about warming the intake charge.

Otherwise no, it doesn't!

And whos proven that with the same intake/cooler/manifold/downpipe & exhaust that a hybrid makes more power? No one...
 
Gee

Gee

Member +
GTti said:
Yea only at 13psi or more where the CT9 starts to think about warming the intake charge.

Otherwise no, it doesn't!

And whos proven that with the same intake/cooler/manifold/downpipe & exhaust that a hybrid makes more power? No one...
Click to expand...

Are these facts or just your theory?
 
Dan3SGTE

Dan3SGTE

Member +
GTti, can you give an explanation to what i said in my last post as im trying really hard to see what your saying but at the same time doesnt make alot of sense.....
 
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Adam_Glanza

Member +
the reason why nobodys really done it is because its not all that safe to do so, and wont get you maximum gains.

its all on capacity but imo the bigger turbo can push more air because of its size, its like a big hairdryer and a small hair dryer, you can use 750w in both but the bigger hairdryer will ALWAYS push out more air

ok capacity to a point does make a difference, yes ok the size of a straw it wouldnt because you psyically couldnt get more air into it.

but an engine it would make a difference. and it clearly does?
 
Dan3SGTE

Dan3SGTE

Member +
are you sure you haven't got the physics wrong in this... Or somewhere along the line your missing a key factor? As its more obvious then actually bringing the technical side to the conversation....

You get a 4 and 6 inch fan. Both run say 2K watts(just an example) yet the 6 inch fan will draw more condensation out the the area.... thats a fact.... the turbo will and does work under the exact same principle... its just a fan that compresses large amounts of air in as compact as it can making it nice and dense to through into the intake of the engine...... therefore the larger the compressor the more air it can and does force in but at the same time not changing the flow rate....
 
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Adam_Glanza

Member +
exactly wat im trying to say 3sgte..

i think your trying to be to clever for your own good gtti.

yes ok efficiency and temps can cause a difference,

but thats only after alot of factors which arent really all that important to start with,

the main question is the bigger turbo @ the same psi WILL push more air
 
Dan3SGTE

Dan3SGTE

Member +
i do agree with the temperature part... when a turbo is running above its heat efficiency the intake temps will become hotter thus causing loss of power BUT say 2 comparable turbos put on the same engine both with same uprated modifications and both turbos running well withing their efficiency(say 1bar) as thats when most turbos are lively, you WILL get more power from the bigger compressor installed... An engine only works on fuel and air and ignition but thats something else all together....

In this case (turbo talk) the only factor here can only possibly be a larger volume of air..... Nothing else here can explain why you would get more power.. and yes you do get more power.... can search and show examples if you like......
 
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Adam_Glanza

Member +
thats exactly why you install bigger compressors in turbos ie hybrid turbos.

why would you bother changing it if you could get the same results @ the same psi neway?

point made :)
 
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