Porsche 944 turbo - turbocharger

I do not intend to deal with the general subject of turbocharging, for that please see the following:


A great read - Maximum Boost by Corky Bell - ISBN 0-8376-0160-6

K26 compressor wheels

-Compressor housing: I.D. of inlet = 1 13/16”
O.D. of inlet =2”
O.D. of outlet = 2”
-Compressor wheel: Inducer dim: 1 ¾” (44 mm)
Major dim: 2 9/16” ( 64mm)

-Turbine housing #6: Inlet I.D.= 1 15/16”

Outlet = 1 7/8”

-Turbine wheel #6 : Inducer dim: 1 7/8” (48mm)
major dim: 2 7/16” (54mm) I have been reading up on turbo’s and i think a #6cm2 turbine = a .36 A/R And a #8cm2 (turbo s ) turbine = .48 A/R
I have been trying to compare a k26 to Turbonetics Turbo's To see what Turbonetics turbo could replace a k26/6.And this is what i have come up with.

I think that a Turbonetics T3 55 trim compressor and a standard turbine with .36 A/R. is the closest turbo to a k26/6 i could find.

Download an Excel spreadsheet calculating cfm, temp rises and varying boost levels