Up and Running!!! Adjustable Cam Gear????

[Ti Kan]

ed armstrong writes:
> Good point, can you compensate a 4 degree cam advance
> with a 4 degree retard on the distributor ??
> 
> --- Ti Kan <ti at amb.org> wrote:
> > ed armstrong writes:
> > > About the adjustable cam gear....I recently
> > contacted
> > > TT motors in Oregon about their adjustable cam
> > > sprocket for VW 8v four cylinders. They said it
> > would
> > > fit a Audi I-5. Same number of teeth (45?) and
> > > dimensions. Cost was around $120.  Timing could be
> > > advanced/retarded +-6degs.  I'm still considering
> > > getting one for my project 90q turbo.
> > 
> > Don't forget, though, that the adjustable timing
> > sprocket will change
> > only the cam timing on a 4 cylinder car, but on the
> > 5-cyl it will also
> > change ignition timing.  The ignition distributor is
> > driven by an
> > intermediate shaft off the timing belt on the
> > 4-cylinder cars, but is
> > cam driven on the 5-cylinder.

Yes if you have a simple "statically" adjustable cam sprocket.  Those
that vary the cam timing based on the RPM could get a bit complicated.

-Ti
01 S4 2.7 biturbo quattro
84 5000S 2.1 turbo
80 4000 2.0
-- 
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Research Laboratories, Sunnyvale, CA. USA
  ///    ti at amb.org
 //////  http://www.amb.org/ti/
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