Miscellaneous Rear 4-lug brake info

From:  Theodore Chen
Subj:  [rrax-mustang] Re: rear discs with 4 lug?
Date:  Mon Oct 11, 1999 6:25pm
 
> You get the T-bird rotors, calipers, e-brake cables etc. and 
> custom modified caliper brackets. This is a nice caliper in that
> many brake pad selections are available. To really make the
> front and rear function as a well matched system, the front
> calipers should be upgraded to the 73mm versions, the master
> cylinder should be the 1 1/8" bore version, and an adjustable
> proportioning valve should be added.

the only problem is that the t-bird rear calipers have 46mm pistons.
combined with the 73mm fronts, they won't give you much rear bias.
i suspect that you'll find yourself unable to lock up the rears 
even with full line pressure to them.

they're still better than stock brakes, though, and should be fine
for most people.  you can play with pad selection to try to make
the rears do more of the work.  but if you have any kind of rear
suspension, you're going to have trouble using the extra rear traction
with the t-bird rears.

SVO 54mm rear calipers would be a better match for the 73mm front
calipers.

-teddy

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From:   Theodore Chen
Subj:   Re: [rrax-mustang] turbo coupe to late model 5-lug
Date:   Fri, 6 Apr 2001 10:36:28 PM Eastern Daylight Time

yes.  the t-bird/taurus caliper has 45mm bore, while the cobra/GT rear
calipers are 38mm bore.  the t-bird caliper also uses slightly larger pads.

-teddy

--- akkm wrote:
> i think the pad outline is d347 (porterfield). I have these rear calipers.
> Vented rotors.
>
> is this a 'more powerful' caliper than the stock rear from the 2300K kit or
> standard SN-95 rear calipers?
>
> Alan
> '89 GT (331,canfield,S-trim,Griggs GR-40)
> '94 Cobra
>
> ----- Original Message -----
> From: 
> Subj: RE: [rrax-mustang] turbo coupe to late model 5-lug
> Sent: Friday, April 06, 2001 10:02 AM
>
> Wow,
>
> I was not aware that Taurus was using the same rear calipers as the Turbo
> Coupe. This is good information
>
> Thxs
>
> -Peder-
>
> Original Message:
> -----------------
> From: Fairbank, Alex
> Date: Fri, 6 Apr 2001 08:59:40 -0400
> Subject: RE: [rrax-mustang] turbo coupe to late model 5-lug
>
> A little more T-coupe info...
> 
> If you need new calipers / brackets, you can use '91-'93 (maybe other
> years as well) Taurus rear calipers. Just ask for "loaded" or "police
> package" calipers and you'll get the brackets too.
> 
> I don't know the size or swap potential of the rotors, though...
> 
> Alex Fairbank


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From:  Brian Ruff
Subj:  Rear pad interchangability
Date:  Thu Aug 3, 2000  2:54 am

Theodore Chen wrote:
>
> the biggest advantage of using the baer 12" rear brake kit
> is the pad selection.  the baer setup uses camaro PBR rear calipers,
> which take a D413 pad outline.  this is the same one that the
> corvette uses, and as a result, everybody and his dog sell pads for
> it.
>
> you'll have a harder time finding pads for the t-bird rear calipers
> that the SSB kit uses, which as i recall are D347.  i've heard, but
> not verified personally, that D413 pads will work in the t-bird
> calipers.
>
> it's also harder to find D627A pads for the cobra rear calipers,
> though not as hard as it used to be.
>
> -teddy

I have used both the 347 and 413 in my T-bird Varga calipers.  According
to Porterfield, there is a 0.5mm difference in backing plate width and
height between the two outlines.  Also, the T-bird version (347) is
several millimeters thicker.  The Porterfield pads were $10 more for the
347, but the extra friction material thickness made up for the price
difference.  It does seem easier to find performance pads for the 413
outline, though.

-Brian