C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1/4"" plate behind master cylinder

Thread Tools
 
Search this Thread
 
Old Oct 7, 2022 | 12:47 PM
  #1  
7thvet's Avatar
7thvet
Thread Starter
Melting Slicks
Conversation Starter
All Eyes On Me
Photogenic
Photoriffic
 
Joined: May 2005
Posts: 3,134
Likes: 11
From: At the St. Louis Playboy club.
Default 1/4"" plate behind master cylinder

Is this plate supposed to be between my master cylinder & brake booster?
I've been having to press hard on the brakes to stop, just checking every possibility.
I don't remember if it came with the MC or the booster.
Car is rarely driven & my memory is fading.
It's an 84.

Thanks
Reply
Old Oct 7, 2022 | 12:51 PM
  #2  
85 Z51's Avatar
85 Z51
Instructor
All Eyes On Me
 
Joined: Apr 2022
Posts: 181
Likes: 118
From: Oregon
Default

That does not look factory to me. My 85 does not have one.
Reply
Old Oct 7, 2022 | 02:14 PM
  #3  
s carter's Avatar
s carter
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2014
Posts: 2,897
Likes: 592
From: New Port Richey FL
Default

The plate wouldn't change your effort but your peddle hight would. If you're needing to press hard you either have a problem with the booster or it's vacuum supply.

Getting back to the spacer I seem to remember some cars having them, so removing it would probably leave your brake pedal high leaving brakes on.
. you should have around an inch then brakes should apply making a difference and locked up well before the floor
. Will admit that the spacer and the booster are both not factory so spacer might have to do with aftermarket booster

Last edited by s carter; Oct 7, 2022 at 04:53 PM.
Reply
Old Oct 7, 2022 | 07:03 PM
  #4  
7thvet's Avatar
7thvet
Thread Starter
Melting Slicks
Conversation Starter
All Eyes On Me
Photogenic
Photoriffic
 
Joined: May 2005
Posts: 3,134
Likes: 11
From: At the St. Louis Playboy club.
Default

Hey thanks guys.
I took a ride, checked the temperature of each caliper , 3 of them were 90 degrees & the drivers side rear was 160.
So I got it apart but the piston is froze.
Tomorrow I will figure out how to get the piston out, it's probably corroded beyond repair.
Thanks for figuring out the spacer, (aftermarket booster).
Reply
Old Oct 7, 2022 | 07:23 PM
  #5  
RWDsmoke's Avatar
RWDsmoke
Drifting
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Jan 2005
Posts: 1,354
Likes: 325
From: San Antonio Tx
Default

I've not seen a spacer behind a brake master. There is one behind a clutch master cylinder.
Reply

Get notified of new replies

To 1/4"" plate behind master cylinder





All times are GMT -4. The time now is 03:09 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE