[s-cars] Sequential Turbocharging

[Matthew Russell]

My only thought was that I saw something similar, and I believe it's a 
Direct Injection motor with both a turbo and a supercharger.

Yes, this would be very interesting, but I couldn't tell you how 
feasible on a urS (without the DI of course).  Would definitely be the 
best of both worlds!


On Thursday, January 5, 2006, at 11:03  PM, Steve wrote:

> Message: 6
> Date: Thu, 5 Jan 2006 19:36:08 -0800
> From: "Steve Voit" <stevevoit at comcast.net>
> Subject: [s-cars] Sequential Turbocharging
> To: <s-car-list at audifans.com>
> Message-ID: <20060106034919.A676053829 at audifans.com>
> Content-Type: text/plain;	charset="us-ascii"
>
> I've read that BMW will be using a sequential turbo set-up on some 
> future
> car where both a small and large turbo are used.  VW is doing the same 
> on a
> 1.1 engine in a small car.  My memory is lousy so that's all I recall.
>
> What needs to happen in the industry at large, or in our circle of 
> s-heads,
> for us to have a realistic shot at doing this in our cars?  I can't 
> get the
> thought of low-lag and high-output out of my s-head; I want power w/o 
> giving
> up response at lower revs.  Would doing this today amount to 
> integration of
> known components, or rather, do new (reliable, affordable, 
> mass-produced)
> components need to come to market first?
>
> Assuming the bits are available how tough would it be in terms of 
> skills,
> man months, budget?  I know Porsche gets credit for the integration we 
> call
> RS2;  is it feasible for a smaller group to do this with sequential
> turbocharging?
>
> The ultimate group buy - x months with a tuner shop to design/engineer 
> a
> solution to the RS2 level of satisfaction.
>
> Any thoughts?
>
> Steve, bein' careful not to inhale while thinkin' out loud (with no 
> dahkine
> nuttin') in Seattle, V.