10 vT EM?

[Michael Gough]

> 74 mm compressor, did You really mean that?
> IMO that size compressor is for some 1000HP?
If you look at the compressor map for the 57 trim T4, you'll notice that max
CFM is about 42 lb/min. This roughly equates to ~450hp potential.
The compressor map (along with the other Garretts) can be found at
http://turboneticsinc.com

> Biggest T-4 I have heard had some 60 compressor.
This is a 60 trim compressor, not 60mm....If you look at the Turbonetics
site, you'll notice there are 60 trim compressors in a T3, but also 60 trim
compressors in a T4...but the T4 60 trim is a LOT bigger! It can put out
close to 50 lb/min vs. about 30 lb/min for the 60 trim T3.
If you take a look over here...
http://www.intenzmedia.com/fahlgren/cars/audi/maxq/turbocharger.html
You'll see that the 50 trim T4 has a (if I did the conversion right) ~90mm
compressor wheel with a 45mm compressor inducer diameter.
The trim isn't the direct size of the compressor; a 60 trim is not
necessarily 60mm.
Mike