[s-cars] Anyone ever use 944 Turbo calipers on an S6?
joeamund
joeamund at online.no
Sat Nov 16 14:47:48 EST 2002
Hi again Richard!
I am using an aluminium hat up front with the Porsche rotors(GT2 330x36mm)
and the Audi 112x5 bolt circle on the hats.
On the rear I am using the one-piece cast GT3 rotor(322x28mm) with 130x5
Porsche pattern redrilled to fit the 112x5 pattern and a centering ring. Se
the setup at : http://www.s-cars.org/urs4s6/faq/f008/f008.html
(there are still some pics and drawings missing from the article)
So I am using all Audi hubs, if not I would have problems with new wheels.....
Yes the shimming of the pads are extremely important, and is often forgotten
when modifications are made by us.
Regards Joern
>===== Original Message From "Richard Tanimura" <Richard at Tanimuras.com> =====
>Hi Joern,
>
>Thanks for more hard facts.
>
>Question to you. Do you have Porsche hubs with the 130 x 5 spacing or do you
>have Audi hubs with 112 x 5 spacing?
>
>Your comment about different thickness backing on the pads is really
>important. In this day of mix and match brakes, you can e.g slap calipers
>that were meant for 32mm on rotors that are 28. I didn't know Movit offered
>that. I will store that info for later use.
>
>Rich
>
>-----Original Message-----
>From: s-car-list-admin at audifans.com
>[mailto:s-car-list-admin at audifans.com]On Behalf Of joeamund
>Sent: den 16 november 2002 10:54
>To: S4audinut at aol.com; s-car-list at audifans.com; t44tq at mindspring.com;
>WeSki at icubed.com; Linus Toy; Richard Tanimura
>Subject: RE: [s-cars] Anyone ever use 944 Turbo calipers on an S6?
>
>
>Linus!
>I'we measured both and the RS2 original front rotor is 304x32 and the rotor
>for upgraded brakes are 322x32.
>
>Apart from the diametrical difference there are other diffencences: 304mm
>rotor has a 50mm wide pad area(ie 304mm OD - 204mm ID) and the 322mm rotor
>has a 60mm wide pad area.(322mm OD - 202mm ID). This makes up for the
>sligtly
>larger 993tt caliper for the 322mm compared to the 968CS used on the
>original
>304mm rotor. The offset is the same on both rotors.
>
>Both systems use as you say the same bracket(8A0 615 125A) and the
>other(apart
>from caliper beeing slightly taller) difference is the pad-retainer which
>place the pad in the center of the pistons which on both systems are
>44/36mm.
>The length of the pads are identical, meaning you can install a large pad(W
>=
>60mm) in the smaller caliper with the proper pad-retainer, but you would end
>up with a mismatch on correct caliper position to the rotor pad area.
>
>Both calipers can accept 36mm thick rotors and I saw they glued different
>"backplates" with different thickness on the pads at MOVIT, in order to have
>the pistons fully retracted for every different thickness. This is a safety
>precaution we all should consider when upgrading our brakes!
>
>Best Regards Joern,MTM RS
>
>
>
>
>>===== Original Message From Linus Toy <linust at mindspring.com> =====
>>--
>>[ Picked text/plain from multipart/alternative ]
>>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 *
>>*--------------------------------------------------------------------*
>>--
>>
>>_______________________________________________
>>S-CAR-List mailing list
>>S-CAR-List at audifans.com
>>http://www.audifans.com/mailman/listinfo/s-car-list
>
>
>_______________________________________________
>S-CAR-List mailing list
>S-CAR-List at audifans.com
>http://www.audifans.com/mailman/listinfo/s-car-list
>
>
>_______________________________________________
>S-CAR-List mailing list
>S-CAR-List at audifans.com
>http://www.audifans.com/mailman/listinfo/s-car-list
More information about the S-car-list
mailing list