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Re: torsens in racing audis

Phil Payne wrote:
> In message <199802261316.IAA13048@us.net> Josh Pinkert writes:
> > Hmmm.  I wonder if Igor @ TAP has had any problems with his racing A4s.  If
> > they are quattro, then he's got a torsen...
> Not necessarily.  The factory A4s have no centre differentials.
> --
>  Phil Payne
>  UK Audi [ur-]quattro Owners Club

I have heard of people trying to use Torsen for rally. They don't last 
long enough to finde out. They are more durable than center diffs in BMW 
but much less durable than Visco couplings or locked open diffs comonly 
used for rally on club levels. They are more than adequare for street use 
and from what I know they are alsow found in rear ends of Mazda RX7 Mk3. 
Like all the other passive diffs they are not nearly as good as todays 
competition active diffs used for 4WD rally cars (ie Hydrolock from UK). 
Hopefully these active diffs will one day make their way into street 
cars. Subaru or Mitsubishi were talking about building them on Evo cars 
but it has not happened yet. 

Mike Z