Brake Master Cylinder

[Scott DeWitt]

What part number do you need?

I had a conversation at AAPEX with a guy who was working a booth for a
reman company and he said that they do not rebuild any brake components
that have aluminium housings, as often people never change the fluid and
it gets slightly corrosive and pits the surface. The only correct way to
rebuild those would be to sleeve it and they couldn't compete with the
companies that just replace the seals.

Scott

On Tue, March 4, 2014 12:49 pm, SAJanesick - Bellsouth wrote:
> Chipping down the list of things to fix a binding RF caliper, the next
> item to change is the brake master cylinder.  AutohausAZ has one at $300+,
> but since the car is so old and this is something of an experiment, I
> opted for a cheaper rebuilt unit from RockAuto - CENTRIC Part # 13033110 -
> for $103.  The unit I received is apparently similar but not identical to
> the original.
>
> The rebuilt CENTRIC looks like the BMC for the standard 200 Quattro as
> illustrated by AutohausAZ.
> http://www.autohausaz.com/search/product.aspx?sid=5lqoz045vymflc45bhb1fg2p&makeid=800002@Audi&modelid=1007277@200%20QUATTRO%20TURBO&year=1991&cid=14@Brake%20%26%20Wheel%20Hub&gid=1836@Brake%20Master%20Cylinder
>
> The BMC for the TQ20V appears identical except it only has two ports vs.
> the four ports above.
> http://www.autohausaz.com/search/product.aspx?sid=5lqoz045vymflc45bhb1fg2p&makeid=800002@Audi&modelid=1007288@200%20QUATTRO%20TURBO&year=1991&cid=14@Brake%20%26%20Wheel%20Hub&gid=1836@Brake%20Master%20Cylinder
>
> According to an ATE cross-reference site, the internal specs are the same
> in terms of bore.  Externally they appear identical save the two
> additional ports.
>
> I have not fitted it yet in case I need to send it back.
>
> The question is has anyone used the unit for the standard 200 and capped
> the two additional brake line feed holes with a threaded plug and then
> successfully used that BMC in the TQ20V, or are there internal differences
> that require the original 2 port version?
>
> If I can save $230 by altering the 4 port BMC to a 2 port, then I'll be
> satisfied to drive around town.  No track time intended.
>
> Thanks,
>
>     - Steve Janesick
> _______________________________________________
> 200q20v mailing list	 http://www.audifans.com/mailman/listinfo/200q20v
>


-- 
Thanks!
Scott DeWitt
Advanced Automotion
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