Need coupe GT information.....lots..lol

[Mark J. Besso]

The 944 doesn't use a proportioning valve. (At least the '85/1 that I've 
been working on doesn't)  In endurance racing it never uses enough of the 
rear brakes and that's a problem.  If we install a proportioning valve it'll 
merely take away from the front braking to help make it more balanced.  Even 
with a perfect 50/50 weight distribution it uses the front brakes for nearly 
all it's stopping power.

~Mark


----- Original Message ----- 
From: "Ti Kan" <ti at amb.org>
To: "tihol tiholov" <tihol.tiholov at sd27.bc.ca>
Cc: <quattro at audifans.com>
Sent: Thursday, November 25, 2004 2:13 PM
Subject: Re: Need coupe GT information.....lots..lol


> tihol tiholov writes:
>> >I disagree, and wait for someone to correct me, but since the rear 
>> >brakes =
>> only contribute about 40% of the stopping power in the first place, and =
>> the harder you are braking the less they contribute because of the 
>> forward =
>> transfer of weight, I would guess that there is little=20
>> sense in increasing the swept area of the rear discs. Did I miss the 
>> point =
>> somewhere?
>>
>> DK, if you did or not.  The above assumptions seem correct until one 
>> looks =
>> at (e.g.) Porsche rear brakes.  The 944 vented rear disks are almost 
>> twice =
>> the diameter of the Typ 89.  Most of the 944 Turbo had the same size and 
>> =
>> type 4-piston br. calipers front and rear.
>
> The 944 has the transaxle in the rear, and a more rearward engine location
> in the front, thus having a very different weight bias than that of a
> fwd Audi coupe.  Even so, I am fairly certain that the 944 also has a 
> brake
> proportioning valve to provide more brake bias to the fronts.
>
> -Ti
> -- 
> Ti Kan
> http://www.amb.org/ti
> Vorsprung durch Technik