RS2 turbochargers

[Dave Lawson <dlawson@ball.com>]

Hi Dan,

>Does anyone know what KKK turbo configuration they're running in the RS2?
>I've heard of people putting them in their UrQ's, and they're supposed to
>be phenomenal... kicks in at 2600 RPM and apparently has enough top end
>to support ~ 315 hp (according to Ned Ritchie).

>Turns out that in addition to replacing my exhaust manifold, I'll need to
>replace the turbo as well.  I was thinking about retrofitting a Garrett
>onto the car (cheap, modern, reliable, and you can get compressor maps
>for them!!!) but that new RS2 turbo sure sounds tempting.  Where can I
>get one (or find out which combination of KKK components I need to string
>together to build my own)?

There is a guy here in Boulder who has an RS2 turbo on his 5000 TQ. This 
5000 has been developed over the last couple of years and is rumored to have 
over 300hp with the 10V engine. He showed up at the quattro club event in 
Denver last summer for a few hours, and people were pretty interested in his 
car. Ned Ritchey was very impressed with the performance of it.  The owner 
is using one of Neds computers in the car. The word I heard was that he got 
the turbo from Germany and that it was big bucks. It probably makes sense 
that one could be designed to the same specs here by any turbo house or Ned 
could probably  put one together. I have no idea of what the specs are for 
this turbo.

An article I read recently about the Nothell tweaked S2s says that the RS2 
uses a bigger turbo than the standard S2, but Nothell goes down a different 
path. The normal turbine section is retained, but with a different rotor, 
driving a larger compressor section. This is to ensure that the turbocharger 
responds just as quickly, but pumps more air. The article mentions that the 
Nothell S2 is making  a little over 300 hp , right around the stock RS2 and 
that there is much potential left in the RS2. He is planning a 400hp version 
that car.
 -
Dave Lawson dlawson@ball.com