RE: Brake Master Cyl Dimensions

["Buchholz, Steven" <Steven.Buchholz@kla-tencor.com>]

> 	my BDTD is on my 86 5ktq.  There were two MC's that fitted my car (I
> used
> 	them both on the same servo) pn 443  611 021 size 23,81X19/17 and pn
> 447 611
> 	021 size 25,40X18/18.  The second one, the wider diameter is for the
> wagon.
> 	I used the smaller diameter one first with no noticeable braking
> 	characteristics.  Then I found the larger diameter one and decided
> to change
> 	to it since that was what the book called for for the wagon.  Again,
> I
> 	didn't find any braking differences between one and the other.
> 
> If you'd like I can pull out the fiche and see what it has to say about
> the M/C versions.  I can also check to see if there was a towing package
> and, if so, what the option code was so that you can check your build tag
> to see if you have it.  Of course it might be easier to look at the rear
> rotors to see if they're vented.  
> 
... well, I did look into the fiche last night and confirmed the numbers
that Lino posted.  In several places on the 5kq and 200q fiche there are
brake parts that are called out as being for the Wagon only ... but in a few
places it states that the parts were for "vehicles with higher permissable
total weight" ... I didn't happen to see a "towing" package listed as an
option, but as I suspected you should be able to tell which parts the car
should use by seeing if the rear rotors are vented.  If your rotors are
vented you have the package and need the parts called out as for the Wagon.
If your wagon is like mine and does not have the vented rear rotors the
parts are the same as the sedan.  

It does appear that there were some supercessions on the heavy duty parts on
the 200, and it appears that the 200q20v also has the vented rear rotors and
the bigger brake master cylinder.  

HTH!
Steve Buchholz
San Jose, CA (USA)