 leaking master cylinder, need to replace master cylinder |
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| jrblackbox |
 Jun 6 2016, 01:58 PM
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#1
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Member  Group: Members Posts: 285 Joined: 8-September 15 From: Easton, CT Member No.: 19,140 Region Association: None 
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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
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| era vulgaris |
Jun 6 2016, 05:07 PM
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J is for Genius Group: Members Posts: 983 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
The 19mm 911 master cylinder will give you a better break pedal feel, but it will not improve break performance with stock 914 brakes. In fact, it will reduce performance. I don't understand fluid dynamics well enough to explain why, but I've read explanations on this site from people who do.
Only use the 19mm MC if you're upgrading to larger calipers. As mentioned, get your brake parts from PMB. Stay away from cheap chinese knockoffs. It's not worth risking the safety of yourself and everyone else on the road just to save a few bucks. |
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Posts in this topic
jrblackbox leaking master cylinder Jun 6 2016, 01:58 PM
Tom_T No, the 911 19mm MC is sized for the 911/914-6 bra... Jun 6 2016, 02:13 PM McMark Yup, call PMB, Eric will set you on the right path... Jun 7 2016, 04:22 AM mankowski I'm about to replace my leaking 17mm master cy... Aug 13 2017, 07:01 PM Elliot Cannon Eric Shea is the guru of brakes. I have been usin... Aug 13 2017, 10:01 PM mepstein Think of master cylinder size as a lever. Pretend ... Aug 14 2017, 04:50 AM
McMark :agree: with Mark.
You can use either 17 or 19. ... Aug 14 2017, 06:33 AM |
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