IM choices, efi, injector location

[alan pritchard]

How come the uk models dont differ so much, i believe the 2144 to be about
132 hp, and the 2309 to be about 136 hp, with minimal changes in torque
figures, personally i believe the us models benefitted from better
fuelling/ignition systems which allowed the us cars to make more power,
whilst still meeting emmisions laws.
My 2 pence, probably wrong.
----- Original Message -----
From: "Ti Kan" <ti at amb.org>
To: <auditude at neta.com>
Cc: <quattro at audifans.com>
Sent: Friday, December 14, 2001 3:30 AM
Subject: Re: IM choices, efi, injector location


> auditude at neta.com writes:
> > Hey, since they actually moved the injectors from the head into the
> > intake manifold on the later normally aspirated cars, maybe that's
> > why they did it?  That might help explain any power increases that
> > coincided with that change in design?
>
> There is no power increase due to that alone.  The power increase
> from 110/115hp to 130hp is due to the increased displacement from
> 2.2 to 2.3 liters, and an increase in CR from 8.x:1 to 10.x:1.
> The 2.3 NF engine has two forms, the early one has the injectors in
> the head, and the later ones with the two piece intake manifold
> with injectors mounted to the manifold.  Both variants make 130hp.
>
> > Do those head castings for the cars with intake manifold mounted
> > injectors still have holes for the in-the-head location?
>
> Good question.  I haven't looked to verify this, but the heads themselves
> have different part numbers...
>
> -Ti
> 01 S4 2.7 biturbo quattro
> 84 5000S 2.1 turbo
> 80 4000 2.0
> --
>     ///  Ti Kan                Vorsprung durch Technik
>    ///   AMB Laboratories, Sunnyvale, CA. USA
>   ///    ti at amb.org
>  //////  http://www.amb.org/ti/
> ///
>