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Re: 30mm or 40mm wide front brake shoes on a 1952 Porsche?
Posted: Fri Mar 25, 2022 12:55 pm
by Tony Proasi
356 42 020 is what I used on my '52 which was used on the aluminum drum cars so it should work great on an iron drum Pre A. The one in your photo shows a raw iron master which in my experience would indicate a cheap aftermarket VW master. I even used the 356 one on my '53 beetle because of the quality of the VW parts is so poor anymore. 113 611 021 C Is correct for a 50-64 VW cars the bus had a different number
Re: 30mm or 40mm wide front brake shoes on a 1952 Porsche?
Posted: Fri Mar 25, 2022 5:03 pm
by Martin Benade
All the VW beetle single circuit master cylinders were 19 mm, not sure about the transporter size.
Re: 30mm or 40mm wide front brake shoes on a 1952 Porsche?
Posted: Sat Aug 13, 2022 11:45 am
by James Davies
Jeroen van der Velden wrote: ↑Sat Oct 30, 2021 4:12 am
I have the same problem on my 1952. It does not feel that it stops like it should. Everything is new/rebuild on the brake system. I already did bleed the system twice. I have 19mm brake cilinders and a 21mm master cilinder. the 21mm master cilinder was already on the car so i did rebuild it. At this moment i think the master cilinder is the probleem. Planning to replace it to a 19mm master cilinder in the next month. Will post again as soon as i have the result.
Yes, the original pre-A master cylinders and wheel cylinders were all 19mm. The ATE wheel cylinders have "19" embossed on them, as does the master cylinder, though many cars have had this replaced. Here's the relevant page from the 1954 Porsche Service Manual
Re: 30mm or 40mm wide front brake shoes on a 1952 Porsche?
Posted: Fri Jan 06, 2023 3:43 pm
by Jeroen van der Velden
Thanks for all the information.
I changed the master cylinder from 22mm to the original ATE 19mm.
big improvement even with these early steel "VW" brake drums!
thanks Jeroen