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

Bleeding Brakes

Thread Tools
 
Search this Thread
 
Old Jul 4, 2012 | 05:46 PM
  #1  
jordan89's Avatar
jordan89
Thread Starter
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Default Bleeding Brakes

Happy fourth of July guys. I'm about to bleed my brakes with the Power Bleeder and wanted to know how much pressure is safe for when I start pumping this thing?
Reply
Old Jul 4, 2012 | 05:58 PM
  #2  
Jud Chapin's Avatar
Jud Chapin
Race Director
Supporting Lifetime
20 Year Member
St. Jude 15 Year Donor
Liked
Community Favorite
 
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Default

There should be directions with the product but I think around 15-20 psi. They work great btw, in case you haven't used one.
Reply
Old Jul 4, 2012 | 05:59 PM
  #3  
Jud Chapin's Avatar
Jud Chapin
Race Director
Supporting Lifetime
20 Year Member
St. Jude 15 Year Donor
Liked
Community Favorite
 
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Default

Here's Motif instructions...


http://www.motiveproducts.com/frame-instruct.htm
Reply
Old Jul 4, 2012 | 07:28 PM
  #4  
Jeff_Keryk's Avatar
Jeff_Keryk
Drifting
20 Year Member
Liked
 
Joined: Feb 2005
Posts: 1,879
Likes: 38
From: Los Gatos CA
Default

I use low pressure, like 10 psi. Someone told me high pressure can make air bubbles into a bazillion tiny bubbles. I just go around twice and tap on each caliper. Easy money.
Reply
Old Jul 4, 2012 | 07:37 PM
  #5  
jordan89's Avatar
jordan89
Thread Starter
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Default

Thank you guys for all the help. This is my first time using one of these. I think I'll keep it at around 10 psi as well.
Reply
Old Jul 4, 2012 | 07:41 PM
  #6  
jordan89's Avatar
jordan89
Thread Starter
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Default

One more brake related question, what are the torque specs for the caliper halfs, front and rear? I'm putting these things together right now and need this info asap.
Reply
Old Jul 4, 2012 | 07:49 PM
  #7  
Mooser's Avatar
Mooser
Race Director
10 Year Member
 
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
Default

Van steel lists the caliper housing bolts as
front 130 (13/16)
rear 60 (5/8)

Caliper mounting bolts
Front/rear 70 (5/8)

HIH
Mooser

Haynes manual says the same

Last edited by Mooser; Jul 4, 2012 at 07:51 PM. Reason: Added second source
Reply
Old Jul 4, 2012 | 07:52 PM
  #8  
dariopop's Avatar
dariopop
Racer
15 Year Member
 
Joined: Oct 2004
Posts: 281
Likes: 9
From: New England
Default

caliper mounting bolt front---70 ft-lbs
caliper mounting bolt rear----70 ft-lbs
caliper housing bolts front----130 ft-lbs
caliper housing bolts rear-----60 ft-lbs
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

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

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old Jul 5, 2012 | 11:01 AM
  #9  
TWINRAY's Avatar
TWINRAY
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2005
Posts: 2,683
Likes: 34
From: Working on the car NY
Default

Verify it's not leaking around the cap before you start the process.
Reply
Old Jul 5, 2012 | 11:10 AM
  #10  
jordan89's Avatar
jordan89
Thread Starter
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Default

Originally Posted by TWINRAY
Verify it's not leaking around the cap before you start the process.
How would I do that?
Reply
Old Jul 5, 2012 | 11:23 AM
  #11  
TWINRAY's Avatar
TWINRAY
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2005
Posts: 2,683
Likes: 34
From: Working on the car NY
Default

Originally Posted by jordan89
How would I do that?
With my Motive bleeder, I've had instances whereby I thought I had the cap of the bleeder fastened correctly to the top of the Master cylinder - yet when I started pumping the bleeder, brake fluid was leaking from the master and the lid. just saying, make sure your lid connection is secure before you start walking around the car to bleed it and then find (later) you've lost a quart of fluid from it leaking out.
Reply
Old Jul 5, 2012 | 11:31 AM
  #12  
jordan89's Avatar
jordan89
Thread Starter
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Default

Originally Posted by TWINRAY
With my Motive bleeder, I've had instances whereby I thought I had the cap of the bleeder fastened correctly to the top of the Master cylinder - yet when I started pumping the bleeder, brake fluid was leaking from the master and the lid. just saying, make sure your lid connection is secure before you start walking around the car to bleed it and then find (later) you've lost a quart of fluid from it leaking out.
I have read about sealing issues with this bleeder and our master cylinders. I think i remember people using a block of wood and, i think C- clamps, to get a tight seal?
Reply
Old Jul 5, 2012 | 11:41 AM
  #13  
TWINRAY's Avatar
TWINRAY
Melting Slicks
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2005
Posts: 2,683
Likes: 34
From: Working on the car NY
Default

Originally Posted by jordan89
I have read about sealing issues with this bleeder and our master cylinders. I think i remember people using a block of wood and, i think C- clamps, to get a tight seal?
That's what I use too - still have to make sure you don't get a leak. I saw somewhere else, a Motive bleeder with a aluminum top plate. Mine has a plastic plate with a rubber gasket seal - which the last time I used it, has become "unglued" from the plate and now has to be carefully positioned but with brake fluid, tends to become slippery. I actually had better luck with a manual bleed than with the Motive in getting bubbles out on my '69.
Reply
Old Jul 5, 2012 | 12:33 PM
  #14  
Mooser's Avatar
Mooser
Race Director
10 Year Member
 
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
Default

I use one "quikgrip" type clamp



I also don't put any fluid in the container, just use the air pressure and need to remember to check the level in the reservoir. Somehow seemed better then ending up with a bunch of fluid in the pump and having to deal with that.

Done that way for a couple of years, zero-problems so far
Mooser
Reply
Old Jul 5, 2012 | 09:37 PM
  #15  
dariopop's Avatar
dariopop
Racer
15 Year Member
 
Joined: Oct 2004
Posts: 281
Likes: 9
From: New England
Default

Originally Posted by TWINRAY
Verify it's not leaking around the cap before you start the process.
Pump it up to 10lbs dry 1st, if it holds than release the pressure and add brake fluid to the container.
Reply
Old Jul 8, 2012 | 01:43 AM
  #16  
jordan89's Avatar
jordan89
Thread Starter
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Default

All great tips guys. Thank you all.
Reply
Old Jul 8, 2012 | 10:42 AM
  #17  
richardttu's Avatar
richardttu
Instructor
10 Year Member
 
Joined: Nov 2006
Posts: 130
Likes: 1
From: Wylie TX
Default

I used mine for the first time yesterday myself. I did have a little trouble with leaking from the Master. But I used a quick clamp like Mooser did (I have the metal plate version) and no further problems. I bled at 10-15 lbs. Next time, I will not even use the bolts that came with the bleeder, just the clamp.
Reply

Get notified of new replies

To Bleeding Brakes





All times are GMT -4. The time now is 05:33 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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