[s-cars] BB Upgrade - rotor question

[Tony Curran]

Thanks Sean. I already have an e-mail in to Brendan at Apikol.

As for A8 rotors, there's an article around where an S2 owner interchanges
the A8 314x25 with the 323x30 rotor with a 986 caliper which would suggest
the offset is the same.

Cheers,

Tony
96 S6 - with fingers crossed!

-----Original Message-----
From: Sean Douglas [mailto:s_douglas at telus.net] 
Sent: December 7, 2008 7:25 PM
To: 'Tony Curran'; 'S-Car-List at Audifans.Com'
Subject: RE: [s-cars] BB Upgrade - rotor question


Tony:

I'm not sure on what the specifications are for the C4 caliper but based on
your post, they are obviously designed for a thinner rotor. Maybe this would
be similar to the BIRA System 1, which was a Boxter caliper over a 312x25
rotor from the older A8.

Regardless, if the Apikol bracket is designed to work with the 323x30 rotor,
it will likely not work with the 312x25 rotors. Not only are they 5 mm
thinner, but the hat offset may be different too. Also, you will need to
confirm that the mounting hole spacing matches too. Perhaps Apikol can
provide advice on this.

Sean

> -----Original Message-----
> From: Tony Curran [mailto:tony.curran at sympatico.ca]
> Sent: December 7, 2008 11:40 AM
> To: 'Sean Douglas'; 'S-Car-List at Audifans.Com'
> Subject: RE: [s-cars] BB Upgrade - rotor question
> 
> 
> Thanks Sean. I did a double check and what I have are not tts
> but C4. Oops.
> Am I going to be able to use these? I was planning on using 
> Apikol non RS2 bracket that already centres correctly.
> 
> Tony
> 96 S6
> 
> -----Original Message-----
> From: Sean Douglas [mailto:s_douglas at telus.net]
> Sent: December 7, 2008 2:30 PM
> To: 'Tony Curran'; 'S-Car-List at Audifans.Com'
> Subject: RE: [s-cars] BB Upgrade - rotor question
> 
> 
> Tony:
> 
> Hmm, seems weird. The 993tt is designed to accept a 32 mm
> thick rotor. The
> A8 Audi rotor is indeed 30 mm thick  - I just ran out to the 
> garage and
> double checked on an extra set I have.
> 
> Are you sure yours are from the twin turbo 993?
> 
> BTW, since the Audi rotor is 2 mm less thick than the Porsche
> rotors, it is
> not perfectly centered and is offset by 1 mm. It doesn't really affect
> things too much, but you will notice that the pads will not 
> wear evenly.
> 
> Most people don't bother, but you can machine 1 mm off the
> bracket to centre
> the caliper over the rotor. Or if you run 993tt 32 mm rotors 
> rings with a
> custom hat, then you don't need to do anything (which is what 
> I'm running).
> 
> Sean
> 
> > -----Original Message-----
> > From: s-car-list-bounces at audifans.com 
> > [mailto:s-car-list-bounces at audifans.com] On Behalf Of Tony Curran
> > Sent: December 7, 2008 7:51 AM
> > To: S-Car-List at Audifans.Com
> > Subject: [s-cars] BB Upgrade - rotor question
> > 
> > 
> > Hi folks, I'm accumulating the parts for a spring upgrade to Big 
> > Blacks. Just received a used pair of 993 calipers and was doing a 
> > bit of cleaning when it occurred to me the space for the rotor
> > didn't quite appear to be 30mm wide - measures just a tad over 28mm.
> >  
> > So, when the dimension of the A8 rotor 4D0 615 301 J is spec'd as 
> > 323x30, just exactly what is the 30?
> >  
> > I'm planning on using plain A8 rotors (no slots or holes &
> > $95) any thoughts on pros/cons? (I don't plan to track car).
> >  
> > Thanks
> >  
> > Tony
> > 96 S6
> > _______________________________________________
> > S-CAR-List mailing list
> > S-CAR-List at audifans.com
> > http://www.audifans.com/mailman/listinfo/s-car-list
> > 
> 
> 
>