 Master Cylinder - rebuild or buy a replacement |
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| dgraves |
 Mar 30 2018, 06:24 PM
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#1
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1974 914 2.0  Group: Members Posts: 180 Joined: 6-June 16 From: Montana Member No.: 20,076 Region Association: Rocky Mountains  |
It feels like my brake master cylinder is going bad on my 1974 2.0. Since I've never rebuilt one or replaced one on the 914, I'm looking suggestions and parts sourcing. Any help out there?
Thank you. |
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| iankarr |
Mar 30 2018, 08:46 PM
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#2
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The wrencher formerly known as Cuddy_K Group: Members Posts: 2,564 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region 
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What makes it feel like the MC is failing? When was the last time the system was bled with new fluid? Over time, DOT 3 & 4 brake fluid pull humidity from the air, which leads to decreased braking response. If it hasn't been changed in a while, that could be the cause.
The 19mm MC is a great upgrade regardless. Here's the install video I made for the 914rubber one...hope it helps. https://www.youtube.com/watch?v=N6ZHK5f_9bE |
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| bdstone914 |
Mar 30 2018, 09:20 PM
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#3
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bdstone914 Group: Members Posts: 5,032 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(cuddy_k @ Mar 30 2018, 07:46 PM)  What makes it feel like the MC is failing? When was the last time the system was bled with new fluid? Over time, DOT 3 & 4 brake fluid pull humidity from the air, which leads to decreased braking response. If it hasn't been changed in a while, that could be the cause. The 19mm MC is a great upgrade regardless. Here's the install video I made for the 914rubber one...hope it helps. https://www.youtube.com/watch?v=N6ZHK5f_9bE (IMG:style_emoticons/default/agree.gif) You may just have soft rubber flex lines that need replacing. Rubber or SS flex lines are good. Pelican carries a good set made by Troutman for about $80. Rebuild kits have not been available for years. Discontinued as the bore can be bad and a mechanic have a lot of time to R & R a master cylinder and bleed the system. |
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Posts in this topic
dgraves Master Cylinder - rebuild or buy a replacement Mar 30 2018, 06:24 PM
bbrock I looked high and low for a rebuild kit and my und... Mar 30 2018, 06:43 PM
dgraves
I looked high and low for a rebuild kit and my un... Mar 30 2018, 06:56 PM bbrock
I looked high and low for a rebuild kit and my u... Mar 30 2018, 08:15 PM Coondog Perfect time to upgrade to a 19mm master cylinder,... Mar 30 2018, 07:01 PM dgraves
What makes it feel like the MC is failing? When w... Apr 1 2018, 08:55 AM aharder go for the 19MM from 914Rubber :D Mar 30 2018, 08:47 PM drem914
go for the 19MM from 914Rubber :D
Second that... Mar 30 2018, 08:51 PM steuspeed I went with the 17mm Ate from Pelican Parts. ... Mar 30 2018, 10:37 PM porschetub
I went with the 17mm Ate from Pelican Parts. ... Mar 31 2018, 01:06 PM mepstein I would do the soft lines at the same time. They d... Mar 31 2018, 05:35 AM The Cabinetmaker I agree on the soft lines. They degrade from the i... Mar 31 2018, 11:18 AM JFG I looked for ages for a kit for my 19mm but could ... Mar 31 2018, 01:25 PM The Cabinetmaker To much liability to sell rebuild kits to people w... Mar 31 2018, 02:18 PM bbrock
To much liability to sell rebuild kits to people ... Mar 31 2018, 02:52 PM cuddy_k If everything is new, it could be that the pads ha... Apr 1 2018, 12:59 PM cal44 Do you have two bleed nipples on each caliper? O... Apr 1 2018, 01:26 PM dgraves
Do you have two bleed nipples on each caliper? ... Apr 1 2018, 03:56 PM |
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