Understanding Turbos

[endlesszeal]

i just recently learned how to read compressor maps and how to roughly plot your engines specs into and see where it lands if its in its most efficient part.... now i want to know how to tell how much boost this turbo can handle, whats its power band, etc... by just looking at numbers.. for example:

COMPRESSOR:
-Wheel- 48/52/56 Trims -
49.3/51.2/53.1 inducers / 71.1 Major
-Housing- 70 Inlet / 50 Outlet - 0.50 A/R
TURBINE:
-Wheel- 84 Trim - 56.5 Major / 51.8 Exducer
-Housing- GT25 inlet / Outlet spec:
Internal GT28; 0.64, 0.86 A/R
External GT30; 0.61, 0.73, 0.87, 1.01, 1.12 A/R

what does that all mean???? i want to learn how to pick a turbo instead of go, oh i want a T3/T4 because ummm thats what everyone uses.. anyway, thanks in advance..

 

[posol]

the thing is, there's 231412312321 t3/t4 turbos out there.

there's several trims for the compressor, there's several trims for the turbine.
there's countless a/r's for both
there's countless wheels
there's countless housings.

inducers and exducers are effected by the a/r and so much more...

it would take years for me to begin to type this stuff up.
here's some links.

what is a/r? http://www.honda-tech.com/zerothread?id=153810
a bunch of great links on general setups: http://www.honda-tech.com/zerothread?id=268110


moreover, i highly suggest you pick up a book on turbos- Corky Bell's Maxium Boost. Amazon has it for like $25