[s-cars] Anyone ever use 944 Turbo calipers on an S6?

[Richard Tanimura]

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Linus,

Ah hard facts. Great. By the way what is this FA? Sounds like something
everyone would like to find stuffed in their Christmas stocking.

1. Are you inferring there were 2 calipers from the fact that there were 2
different radial bolt lengths? That might me a bit of a stretch.

2. Are the A8/S8 rotors 223 x 30? I don't know these things. 0.5 mm can be
milled off the rotor face. If luck was on your side and the offset was in
the right direction, you could machine 0.5 from the adapters. All these
probs would of course be eliminated if we had floating rotors.

I am really interested to hear how this goes. I would do this upgrade myself
except that being a tight a$$ makes me want to keep my wheels.

Rich


  -----Original Message-----
  From: Linus Toy [mailto:linust at mindspring.com]
  Sent: den 16 november 2002 08:47
  To: Richard Tanimura; t44tq at mindspring.com; S4audinut at aol.com;
WeSki at icubed.com; s-car-list at audifans.com
  Subject: RE: [s-cars] Anyone ever use 944 Turbo calipers on an S6?


  At 10:06 PM 11/15/2002 , Richard Tanimura wrote:

    I believe the standard rotors for the Porsche S4 calipers were 304 x 32
    which are the rotors from the 3.3 l turbo. I thought it was this size
that
    was used on the RS2. Could be wrong since I have never measured the RS2
    rotors.

  The FA shows the RS2 original rotor as 304x32.  Further review of the FA
shows two different calipers--one about 5mm taller than the other (based on
the bolt fixing the caliper to the same bracket).  5mm taller implies a 10mm
greater diameter, though this doesn't account for actual location radially
vis-a-vis the rotor.

  Coincidentally, the normally aspirated 993 stock rotor size is
304x30...hmmm...the NA 993 uses a caliper that sits 5mm lower than the
993tt's BR caliper (again, based on differences in bolt length used to fix
caliper to strut).  It is a simple (but $$$) bolt-on conversion to put 993tt
BR calipers on a NA 993.


    Getting back to the 951 calipers, I think they would make a nice
moderate
    upgrade. I don't track my car and the 951 calipers are a nice trade off.
    Smaller, lighter calipers than the S4, less rotating mass in the rotors
298
    x 30, less unsprung mass. Not as good as the Porsche S4 but better than
the
    G60 and they fit my 16"s. As noted, the RS2 adapters would fit the
mounting
    holes of both the Porshce S4 and the 951 calipers, but since the 951
takes a
    slightly thinner rotor, the problem might be offset in the axial
direction.

  According to some posts, using the RS2 bracket with 993tt calipers over
A8L/urS8 rotors leaves the caliper about 0.5mm off-center--nothing
critical--I'll find out first-hand very soon :)  Remember that the A8L rotor
is only 30mm vs. the 993tt rotor at 32mm.


    -----Original Message-----
    From: s-car-list-admin at audifans.com
    On Behalf Of t44tq at mindspring.com
    Sent: den 16 november 2002 03:50
    To: S4audinut at aol.com; WeSki at icubed.com; s-car-list at audifans.com
    Subject: RE: [s-cars] Anyone ever use 944 Turbo calipers on an S6?

    I don't know- the RS2 used both 314x30 and 322x32 rotors, right,
    depending on the option? I don't know if the placement would put the
    caliper in the right place even if the bolt spacing was the same.
    Taka

  Interestingly, 314x30 IS a common (?) Audi rotor size, as used on the Euro
S6 and A8, just a different bolt-circle from the RS2.

  --Linus



  *--------------------------------------------------------------------*
  *  Linus Toy                      Insanity is doing the same thing   *
  *  Mercer Island, WA              you've always done and expecting   *
  *  linust at mindspring.com          different results                  *
  *                                      - Roger Milliken              *
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