[s-cars] Rear diff installation

[Bob Rossato]

As best I can tell from looking through the FA, though it is a Euro FA,
they're all 4.11 to 1.  If the '90 isn't, then it won't work at all without
also changing the transmission since the front differential is a 4.11:1, and
the ratios front and rear have to match.

Bob

> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com]On Behalf Of
> jpb3wvu at frontiernet.net
> Sent: Tuesday, November 23, 2004 12:07 PM
> To: s-car-list at audifans.com
> Subject: Re: [s-cars] Rear diff installation
>
>
> Since we are on the topic.
>
> What year V8 Torsen Diffs are you guys installing?  I have a 90
> V8 that I am considering swapping out the rear diff with the S6.
>  I want the Torsen benefit but my S6 rear diff is leaking anyways
> so I kill two birds with one stone. Anyways, my 1990 has the 3.6L
> PT motor with what I believe to be a 3:83 rear end.  If I am
> correct I beleive the 92-94 V8's had the 4.2L motor with 4:11
> rears.   So there are two different ratios for the rear end
> depending on what year it comes out of.  This I know for sure, I
> may be off on the ratios but I know that the 3.6L motor and the
> 4.2L motor had different ratio Torsen rears.  Which one best
> matches the S6?  Any takers?
>
> TIA for any insight.
>
> John