MC Diameter

bavbob

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Any way to tell which diameter master cylinder I have just by external inspection? 1973 cs, euro. Tx
 
I'm pretty sure the brake booster is the same size and that either master will bolt up to the it.
 
I dunno. My 2800 booster is a lot thinner than the later ones.

Like this one:

17024021565_4b3cd2c932_b.jpg
 
We discussed this a few months ago but I can’t find the thread. The 2800CS got the thinner pancake style booster, the 3.0CS got the fatter one.
 
My '69 2500 also had the thinner booster. Masterly, beautiful brake feel, much better than the 2800CS and current 3.0CS, and wife's Bavaria. Of course it could be other things about the brake system, but it was the best I've had.
 
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