adam120674

iTrader: (2)

Here is my turboSpecs:
T70 Wet Floating Bearings Turbocharger!!
Compressor Specs:
4" Compressor Inlet
2.077" or 52.77mm Inducer
3.000" or 76.20mm Major
2.5" Compressor Outlet
Compressor .70 A.R.
Compressor 75 Trim
6 Blade Propeller Type
M14 Compressor Housing
Turbine Specs:
T4 Type Turbine
T3 4 Bolt Flange
58.18mm Exducer
Turbine .84 A.R.
Turbine 60 Trim
2.900" or 73.66mm Major
T3 Twin Entry Turbine Housing

I want to know the effects of switching the Turbine to a smaller one -
an .63 A.R. as I have one. Faster or Slower spooling? More or less power in Low or higher rpm range? Will it lower or raise my air flow volume?

JAX04

iTrader: (17)

from what i understand, the smaller will spool faster but sacrifice power up top, it will reach its peak efficiency sooner, meaning more power down low with the sacrife of little top end, im not sure that the amount of volume will change as you are not changing your compressor size, if you want more volume youll need to step up to like a t76 or larger, the size of the "snail" is what dictates the amount of air it can mover. IMO im sure someone with more knowledge will come along sooner, im not sure if you saw it, but the stickies up top i think have a great start up page of compressor sizes and what not.?>

slow67

iTrader: (2)

I hope there is a matching turbo (as in twins) as this turbo is WAY to small for even a stock LS1.

JAX04

iTrader: (17)

oh ****, i didnt even see that its a t3/t4, you should really have atleast a t4 all the way for this project, that t3 hotside is for little motors with less exhaust, hence why the eclipse guys use them on a t4 compressor, so they can move big air with small motor.

Adam98Z

Knowing the specs on the engine would be useful in helping size the proper turbo.