leaking master cylinder, need to replace master cylinder Options

[jrblackbox]

The master cylinder on my 1971 1.7 is leaking. I searched and haven't been able to find a DIY fix. From what I have read, the master cylinder can't be rebuilt any longer, I also read somewhere that a 911 master is an improvement over the 914. So, I am looking for the how to DIY and where should I purchase a new one? TIA

[mankowski]

I'm about to replace my leaking 17mm master cylinder with an ATE 19mm. I did a lot of research on the site trying to determine whether to go with the 19mm or keep the stock 17mm.

A couple of authoritative members recommend 17mm, referring to Eric Shea/PMB's website for explanation. But, here is what PMB's site says about 17mm vs. 19mm:

Unless this is a "concours d'elegance" thing, do your self a favor and page down to the 19mm master cylinder. This is a slight upgrade in our opinion. With brakes we tend to shy away from the word "upgrade" as it gets bandied about a bit too much by the sheisters out there but, a 19mm will give you a slightly firmer pedal which we think is a plus. It will (laws of physics) take slightly more effort but, trust us, you'll get use to that in a few minutes. Better pedal feel and, the best is yet to come... LOWER PRICE.

Am I misunderstanding something here?

I have Porterfield pads installed, and the 17mm was already more pedal effort than most cars I'm used to driving, in case that makes a difference in the response.