[urq] Brake Master Cylinder Source

[Eric Renneisen]

Frank de Kat wrote:
> I'm thinking that my Master cylnder is not 
> long for this world..
> I can press on it at a stop, and it slowly 
> goes down, but no external loss of fluid.
> 83.5 urq..

If by 83.5 you mean VIN greater than ...0357 then you should have 443
611 021, which is pretty common and used on most of the type 44 cars.  A
new OEM (ATE) unit can be had from various places for just over $100.

If you're unfortunate enough to have the early 857 611 019, that appears
to be a hen's tooth.  Impex (dealer) has those for $450.

Does anyone know any reason why one couldn't substitute the type 44 MC
for the early one?  I know for a fact that the hydraulic boosters are
compatible.  You'd have to get the proper reservoir, and maybe tweak the
lines a bit, but I don't see why it wouldn't work.

Eric Renneisen
'86 urq
'93 S4
Chattanooga, TN