C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Breeding the blakes...

Thread Tools
 
Search this Thread
 
Old Aug 1, 2009 | 02:48 PM
  #1  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default Breeding the blakes...

I'm bleeding the brakes today and using a really cheap method. I'm sure it will work but I'll keep you posted. I've only spent $10 on the breeder reservior at Princess Auto and a vacuum generator I had kicking around . You do need compressed air for this generator to work. Here's some pics.


Reply
Old Aug 1, 2009 | 03:38 PM
  #2  
Richard454's Avatar
Richard454
Le Mans Master
20 Year Member
Active Streak: 30 Days
Top Answer: 1
Top Answer: 3
 
Joined: May 2003
Posts: 8,876
Likes: 3,556
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Default

I prefer getting my GF to push on the brake pedal- that way when it doesn't work -I can blame it ALL on her.

Let us know how it works!!

Richard
Reply
Old Aug 1, 2009 | 03:52 PM
  #3  
Alan 71's Avatar
Alan 71
Team Owner
15 Year Member
Active Streak: 120 Days
Community Influencer
Top Answer: 5
 
Joined: Sep 2006
Posts: 31,226
Likes: 4,313
From: Westminster Maryland
Default

Hi BB,
I've been wondering why I'm seeing so many blakes this year. Now I understand... you've been breeding them.
Is this a one time project or are the going to be more and more blakes in the months to come?
Also, since they are more plentiful will the price go down?
Regards,
Alan
Reply
Old Aug 1, 2009 | 04:53 PM
  #4  
Paul L's Avatar
Paul L
Team Owner
15 Year Member
 
Joined: Aug 1999
Posts: 30,995
Likes: 99
From: Ontario
Default

Originally Posted by Alan 71
Hi BB,
I've been wondering why I'm seeing so many blakes this year. Now I understand... you've been breeding them.
Is this a one time project or are the going to be more and more blakes in the months to come?
Also, since they are more plentiful will the price go down?
Regards,
Alan
He's using Oxford not Webster .
Reply
Old Aug 1, 2009 | 05:37 PM
  #5  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default

Originally Posted by Alan 71
Hi BB,
I've been wondering why I'm seeing so many blakes this year. Now I understand... you've been breeding them.
Is this a one time project or are the going to be more and more blakes in the months to come?
Also, since they are more plentiful will the price go down?
Regards,
Alan
Thats because they are cheaper....arghhhhh...I couldn't get any pressure to the rear blakes at all even using the convetional girlfriend/wife method. I know there's pressure at the front, my new front caliper is leaking. I breed the master 3 times , front and back. I get a jet shooting out the front fitting but not the back. While bleeding it I can see that it's shooting fluid back to the reservior but when I hook it up it's got no flow. It's not leaking out somewhere because the reservior is at the same level.....any pointers here...anybody....I figure the new master is bad.
Reply
Old Aug 1, 2009 | 06:10 PM
  #6  
wer2xu's Avatar
wer2xu
Burning Brakes
10 Year Member
 
Joined: May 2008
Posts: 1,165
Likes: 24
From: Boston MA
Default

sounds like there is a clog somewhere...is this a new brake system, or on a current driver?
Reply
Old Aug 1, 2009 | 08:06 PM
  #7  
CCrane65's Avatar
CCrane65
Safety Car
Veteran: Navy
25 Year Member
All Eyes On Me
Loved
 
Joined: Apr 2000
Posts: 3,802
Likes: 61
From: Wichita KS
Default

Check the rear lines for pinches.

Work your way from the master cylinder toward the back and see if you can locate the blockage. Since you are getting a stream from the master cylinder during bleeding I would check the proportioning valve first and work back from there.

cc
Reply
Old Aug 1, 2009 | 09:52 PM
  #8  
dannyman's Avatar
dannyman
Melting Slicks
15 Year Member
 
Joined: Dec 2006
Posts: 2,669
Likes: 3
From: Kingston Ontario
Default

Originally Posted by BB72
Thats because they are cheaper....arghhhhh...I couldn't get any pressure to the rear blakes at all even using the convetional girlfriend/wife method. I know there's pressure at the front, my new front caliper is leaking. I breed the master 3 times , front and back. I get a jet shooting out the front fitting but not the back. While bleeding it I can see that it's shooting fluid back to the reservior but when I hook it up it's got no flow. It's not leaking out somewhere because the reservior is at the same level.....any pointers here...anybody....I figure the new master is bad.
Rob;

You need to check your proportioning/combination valve and make sure it isn't shifted to one side. Do you have a brake warning light illuminated on the dash; this will indicate the valve off center. This valve off center will restrict brake pressure to the front or from your description to the rear brakes. Follow the brake lines from the master cylinder; first component is the valve in question.

Dan
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Aug 2, 2009 | 01:29 AM
  #9  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default

I have the stream coming out of the front fitting on the master only, everything disconnected after bleeding. Whats confusing is when I bleed the master it looks like the fluid flows well back into the bowl. Everything is brand new except for the proportional and the rear blocks at the kickup, master, SS lines, flex lines, calipers. I will check the proportional tomorrow. But....with the proportional plugged shouldn't you get some pedal pressure? Also I'm working with no power so no lights available.
Reply
Old Aug 2, 2009 | 09:57 AM
  #10  
dannyman's Avatar
dannyman
Melting Slicks
15 Year Member
 
Joined: Dec 2006
Posts: 2,669
Likes: 3
From: Kingston Ontario
Default

You did bench bleed the master before starting this, right? Any air trapped by not bench bleeding thoroughly will almost guarantee failure.

Dan
Reply
Old Aug 2, 2009 | 11:45 AM
  #11  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default

Ok, got the proportioning valve off. Can you take it apart? I can't see the spring that was mentioned through the pressure sense port.
Reply
Old Aug 2, 2009 | 11:46 AM
  #12  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default

Originally Posted by dannyman
You did bench bleed the master before starting this, right? Any air trapped by not bench bleeding thoroughly will almost guarantee failure.

Dan
Bleed three times, flow coming out of both tubes, no air at all.
Reply
Old Aug 2, 2009 | 11:54 AM
  #13  
73StreetRace's Avatar
73StreetRace
Burning Brakes
15 Year Member
 
Joined: Aug 2005
Posts: 1,164
Likes: 1
From: Europe, France
Default

Originally Posted by Richard454
I prefer getting my GF to push on the brake pedal- that way when it doesn't work -I can blame it ALL on her.
Richard
Thinking about it, it's not a bad idea
Reply
Old Aug 2, 2009 | 12:03 PM
  #14  
Peterbuilt's Avatar
Peterbuilt
Le Mans Master
15 Year Member
 
Joined: Aug 2006
Posts: 7,423
Likes: 1,558
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default

Originally Posted by BB72
Ok, got the proportioning valve off. Can you take it apart? I can't see the spring that was mentioned through the pressure sense port.
Some proportioning valves have to be re-centered-see the sticky at the top for how to do that. PG.
Reply
Old Aug 2, 2009 | 12:13 PM
  #15  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default

Ok, read part of the sticky. Did I read correctly that while bleeding the master the pedal should get hard? I never noticed any deference at all. Don't tell me there's air in it either. All the air was pushed out and clear fluid flowed into the bowl. God knows I pushed the pedal enough. Master seals maybe? Everything is new here accept for the proportioning valve.

I have did Corvette brakes many times and never ran into this weird situation. I would rather change/fix the right part rather than just take a guess.
Reply
Old Aug 2, 2009 | 12:29 PM
  #16  
dannyman's Avatar
dannyman
Melting Slicks
15 Year Member
 
Joined: Dec 2006
Posts: 2,669
Likes: 3
From: Kingston Ontario
Default

If bleeding a brand new system it is necessary to bench bleed the master cylinder. This cannot be done on the vehicle. You must remove the master cylinder, locate it horizontal in a vice on a workbench and with bleed tubes installed, fill with fluid and depress the plunger repeatedly until there is no evidence of trapped air in the master cylinder. At this point, re-install on the vehicle. Continue with bleed for individual calipers.

Have you bench bled the master cylinder, as above?
Reply
Old Aug 2, 2009 | 12:30 PM
  #17  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default

OK, valve is centered and I could move the spool with a small allen key quite easily. Putting back together.
Reply

Get notified of new replies

To Breeding the blakes...

Old Aug 2, 2009 | 12:36 PM
  #18  
dannyman's Avatar
dannyman
Melting Slicks
15 Year Member
 
Joined: Dec 2006
Posts: 2,669
Likes: 3
From: Kingston Ontario
Default

Originally Posted by BB72
OK, valve is centered and I could move the spool with a small allen key quite easily. Putting back together.
When the proportioning valve is re-installed do not depress the brake pedal! As soon as you depress the pedal the brake fluid available to only the front brakes will once again shift the internals of the proportioning valve and shut off flow to the rears.

Suggest re-install the valve and gravity feed the system to get sufficient fluid into the rear lines.
Reply
Old Aug 2, 2009 | 02:04 PM
  #19  
MotorHead's Avatar
MotorHead
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Default

Gravity bleed the brakes if you remove the proportioning valve. Also sit the master cylinder on the bench by itself and fill it with brake fluid. The brake fluid should drip from both front and rear connection orifices. If it doesn't you won't be able to bleed them.

I also had to use a hand held vacuum pump to help the gravity bleed along for the rear brakes when I replaced everything, lines, calipers etc.

I have also had good success putting two calipers ( front and rear ) side by side in a dark room overnight

Last edited by MotorHead; Aug 2, 2009 at 02:13 PM.
Reply
Old Aug 2, 2009 | 02:22 PM
  #20  
BB72's Avatar
BB72
Thread Starter
Melting Slicks
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Default

What I did for bleeding the master was to set the hoses up with the master on the car and use the pedal to bleed the master, whats wrong with that?

After everything was hooked up I tried bleeding the front left since the sticky said it didn't matter where you started. I got absolutely nothing there so I went to the left rear and got nothing there.

Last edited by BB72; Aug 2, 2009 at 02:26 PM.
Reply



All times are GMT -4. The time now is 07:24 PM.

story-0
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
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE