Replace Master Cylinder
Drifting
Joined: Apr 2000
Posts: 1,879
Likes: 1
From: Lockport, IL Let's get em ALL home soon!
How timely as I just replaced my master on Saturday. However I also replaced my brake hoses and wanted (needed) to flush out my lines so I used my vacumn bleeder. I did brake the brake pressure warning switch on the master so I just screwed a bolt into the hole.
Anyway, I would think that if you are replacing the master cylinder, flushing the entire system would be a good idea.
Anyway, I would think that if you are replacing the master cylinder, flushing the entire system would be a good idea.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
You don't need to do that except to keep the hole from getting dirt in it. The hole is dry and there should not be any brake fluid in there. If you do have brake fluid in that hole then your master cylinder has an internal leak.
Drifting
Joined: Aug 2010
Posts: 1,704
Likes: 8
i consider a pita any brake job since, always, you need to bleed the system,each caliper,several times,in a specific pattern.It's a 2 guys job if you don't use brake vaccum bleeder tools.When you install a new master ,as video shows,you need to bench bleeding the master,then install the master and bleed again the entire system.i replaced my master a couple years ago,but i had a friend make the dirty job for me...i hate bleeding.Even worst when you need to bleed a master and slave clutch cylinder in a stick trasmission...
Alberto -Italy
Alberto -Italy
Last edited by tunedport85inject; Oct 28, 2014 at 03:22 AM.
Team Owner
Joined: Sep 2001
Posts: 62,127
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
I would recommend changing out all the fluid with a new high quality synthetic like Valvoline and bleeding all 4 corners while you have it out. Its just good maintenance. If your hoses are the stock rubber and haven't been changed, do them too.
Drifting
Joined: Apr 2000
Posts: 1,879
Likes: 1
From: Lockport, IL Let's get em ALL home soon!
That's exactly why I had to change mine. Brake fluid was leaking out of that port. I know I could leave that port open but it just looks more "finished" to have that port closed.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski