RE: 5ktqw Low End Power

[Jorma Heikkinen <jorma.heikkinen@vtt.fi>]

Paul,

The K26 compressor map was published in "Automotive Supercharging and
Turbocharging Manual". This is a british book that is out of print I suppose. 

This map also includes the full load data of an Audi 5 cyl. engine. Below I
have the most interesting variables as a function of engine rpm. You can
see that the full boost is achieved at about 3000 rpm. At high rpms the
boost pressure is slightly decreasing in spite of slightly increasing turbo
rpms.

Full load data of the 5 cylinder 2.14 liter Audi 100 turbo with K26-2664G
6.91:
------------------------------------------------------------
rpm  boost pressure (bar)  rpmturbo  compressor efficiency
1000  0.03                   19000         0.4
2000  0.35                   58000         0.62
2500  0.52                   75000         0.65
3000  0.89                   96000         0.67
3500  0.90                   98000         0.68
4000  0.89                   98000         0.70
5000  0.86                  101000         0.73
6200  0.83                  102000         0.70
------------------------------------------------------------

I can fax you the map if you are interested.

Jorma Heikkinen
Finland
1.8T 1998 Wetterauer

>K24 vs K26 Questions?

>Has anyone ever seen the turbo flow maps for these two units? 
>What about modified compressor and/or turbine A/R 's anyone
>ever seen any K^3  technical litrature on these turbos?


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