[s-cars] Brake Question
Lewis, Gary M
gary.m.lewis2 at boeing.com
Mon Dec 22 17:53:40 EST 2003
Big Reds are ~$260 each at Sunset Porsche in Oregon, but only if you are out of state.
1995.5 S6 Avant, Green/Ecru, RS2 MAF, RS2 Exhaust Manifold, RS2 Injectors, Custom Turbo (K26 Turbine, Factory K26 Cold side (Audi Works '999' P/N) with 50mm intake and custom Innovative Turbo compressor wheel), TurboXS Type 25 Bypass Valve, Bilsteins, Eibachs, Big Reds, Spec II Clutch.
> -----Original Message-----
> From: Keith Maddock [mailto:keith-list at maddock.uzipp.com]
> Sent: Saturday, December 20, 2003 9:09 AM
> To: s-car-list at audifans.com
> Subject: Re: [s-cars] Brake Question
> Riff wrote:
> >Hi List-
> >Wondering about a brake fitment question. Has anyone fit the regular
> >Porsche S2/Turbo brakes to their car, not the ones from the
> 944 turbo S /
> >928 S4? I know they are essentially the same size as the
> standard Boxster
> >caliper and those have been fitted using the A8 rotor. This
> is crossing
> >my mind because if I can waterfall the fronts off of my S2
> to the S6,
> >makes buying the new larger fronts for the 944 more
> palatable. Ideas???
> First a bit of a "glossary" on Porsche calipers:
> Little Blacks : 944S2 (non M030), 951 (non M030 and not
> 951S), 968 (non M030) Medium Blacks: 944S2 (M030), 951 (S or
> M030), 968 M030, 928 S4 Big Blacks/Reds: 928 GTS, 993 TT
> There are 4 primary problems with fitting the "little
> blacks" on a UrS .
> 1) Small pad size (smaller than the "medium blacks" and
> much smaller
> than "big blacks")
> 2) Designed for a narrow 28mm rotor (A8 rotors are 30mm, Porsche
> rotors that pair with "Medium" or "Big" calipers are all 32mm)
> 3) The "little blacks" are radially mounted, not axially
> mounted like the
> "medium blacks" or "Big Reds/Blacks", which means most likely
> there doesn't
> exist a bracket anyway to mate them to your Audi.
> 4) the "little blacks" have smaller pistons sizes
> (36mm/40mm) than the
> "medium blacks" or "Big Reds/Blacks" (both those have
> 36mm/44mm). However
> this is the same as Boxster brakes I beleive.
> In my opinion, the "little blacks" on 298mmx28mm rotors are
> just adequate
> for the ~3000 lb 944S2 / 968 (I have a 968CS with these
> brakes) - however
> with the right pads (cough cough Hawk Blues work really well
> on these cars
> cough cough) they can be just fine unless they are subject to
> a really
> braking intensive track or driver.
> However I don't think these calipers, even with the A8 rotor will be
> sufficient for the S6 - assuming you can safely squeeze that
> 30mm rotor in
> those calipers. The primary reasons being #'s 1,2,3 above,
> and to a lesser
> extent #4.
> However the UrS brakes are pathetic even on the street, (as a
> thread going on right how has protested!), and these "need"
> the upgrade
> **MUCH** more than your 944S2 does.
> I would suggest going for a volume discount and getting 4 Big
> Reds (or big
> blacks) and taking care of both cars at the same time :-)
> Drop me a line off list, if you want, I'm curious to hear what brake
> upgrade you were planning for the 944S2 (I've looked into
> this alot for the
> 968 this summer until I "discovered" the Hawk Blues).
> keith at maddock.com http://keith.maddock.com/
> 93 S4 (mit RS2 + BR upgrades) Portland OR
> 95 968CS (Ring Tool + Daily Driver) Koblenz, DE
> 1/8 89 GTI 16V (Spare Ring Toy) Nürburg, DE
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