Go Back   The Supercar Registry > General Discussion > Technical & Restoration


Reply
 
Thread Tools Display Modes
  #11  
Old 04-07-2020, 04:03 AM
PeteLeathersac's Avatar
PeteLeathersac PeteLeathersac is offline
Yenko Contributing Member
 
Join Date: Jul 2005
Location: O' Canada
Posts: 12,025
Thanks: 14,668
Thanked 4,186 Times in 1,967 Posts
Default

'

Elevating vehicle rear can sometimes help w/ rear bleeding accentuating air movement to system high point/bleeder.
Have rear wheel cyls been physically checked/drums on/brakes adjusted up?
Keep rockin', you'll get there!

~ Pete

.
__________________
I like real cars best...especially the REAL real ones!
Reply With Quote
  #12  
Old 04-07-2020, 04:09 AM
bugsy bugsy is offline
Yenko Contributing Member
 
Join Date: Jun 2008
Location: Pa USA
Posts: 535
Thanks: 3
Thanked 94 Times in 58 Posts
Default

i will try that tomorrow. thanks Ron and Pete.
Reply With Quote
  #13  
Old 04-07-2020, 03:02 PM
ssl78 ssl78 is offline
Yenko Contributing Member
 
Join Date: Dec 2001
Location: West Chicago Il
Posts: 2,128
Thanks: 1
Thanked 225 Times in 103 Posts
Default

I would try and crack the brake line going into the wheel cylinder and see if you have anything goimg in. Maybe wheel cylinders are all pluugged up
__________________
69 RS SS L78 conv
69 RS SS ZL1
69 L78 Chevelle conv
69 L78 Nova
69 L34 Nova
67 SS Chevelle
73 Trans Am
Reply With Quote
  #14  
Old 04-07-2020, 03:26 PM
earntaz earntaz is offline
Yenko Contributing Member
 
Join Date: Mar 2010
Location: Republic of Texas
Posts: 4,620
Thanks: 6,842
Thanked 647 Times in 360 Posts
Default

Quote:
Originally Posted by ssl78 View Post
I would try and crack the brake line going into the wheel cylinder and see if you have anything goimg in. Maybe wheel cylinders are all pluugged up
I know this would be a pain in the south end -- but I'd go one step further. Start at the master cylinder ... crack the line and keep moving to the rear. Messy? yes ... but that may be the only way to nail down where the problem is. Case in point ... had a friend of mine with a 69' Camaro -- pulled the rear end to install a 12 bolt and left the brake line open. To make a long story short -- mud dobbers had built a "nest" in the open line ... didn't notice it and line was plugged ... Craig
__________________
You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know!
Reply With Quote
  #15  
Old 04-07-2020, 08:31 PM
bugsy bugsy is offline
Yenko Contributing Member
 
Join Date: Jun 2008
Location: Pa USA
Posts: 535
Thanks: 3
Thanked 94 Times in 58 Posts
Default

Opened both front bleeders pushed on brake pedal brake light is out. Pin on reg valve is stuck in. Front brakes vacuum bleed good. Back ones do not bleed well. Cracked lines in rear to wheel cyl some fluid comes out. Debating to take wheel cyl off and get rebuilt. Pedal moves down to floor. Maybe spoil valve inside comb valve is not allowing fluid to go to rear brakes. Taking a break been at this all day. Thanks
Reply With Quote
  #16  
Old 04-08-2020, 11:08 PM
bugsy bugsy is offline
Yenko Contributing Member
 
Join Date: Jun 2008
Location: Pa USA
Posts: 535
Thanks: 3
Thanked 94 Times in 58 Posts
Default

Well I checked today to see if I had fluid coming out of the line that comes out of the comb valve to the rear wheel cyl. Nothing. Pulled the master with everything attached. Rust on the booster where the master sits against. Back of master cyl is wet. Think I'm sending it all out to be rebuilt not restored. I called white post today. Also dealt with Karps in Calif years ago. Any suggestions. Going to clean all brake lines and rebuild wheel cyl. Thanks
Reply With Quote
The Following User Says Thank You to bugsy For This Useful Post:
earntaz (04-08-2020)
  #17  
Old 04-08-2020, 11:36 PM
ronzz572 ronzz572 is offline
Yenko Contributing Member
 
Join Date: Oct 2010
Location: Imperial pa.
Posts: 551
Thanks: 19
Thanked 110 Times in 62 Posts
Default

Definitely a good move for the rebuild. 50 year old brake parts surely need attention. Make sure you tear down the wheel cylinders. If they are pitted real bad inside your going to be sending them to get sleeved also.
__________________
1970 z28 4speed cranberry red white stripes standard saddle interior.


1970 L78 camaro cranberry red standard black interior original drivetrain.
Reply With Quote
The Following User Says Thank You to ronzz572 For This Useful Post:
earntaz (04-08-2020)
  #18  
Old 04-11-2020, 07:17 AM
giiiujd giiiujd is offline
Banned
 
Join Date: Feb 2020
Posts: 8
Thanks: 0
Thanked 1 Time in 1 Post
Default

I suggest to turn the key on check if the brake warning light is on. You may have tripped the proportion valve shutting fluid off to the rear. If so it could be a bit of a pain to get reset. You may have to open a front bleeder push the pedal to the till you see the dash light go out or here a click noise centering the valve. Then try bleeding again without heavy foot pressure. Or try your vacuum bleeder.
Reply With Quote
  #19  
Old 04-11-2020, 02:46 PM
bugsy bugsy is offline
Yenko Contributing Member
 
Join Date: Jun 2008
Location: Pa USA
Posts: 535
Thanks: 3
Thanked 94 Times in 58 Posts
Default

Removed the master cylinder and all the valves attached, removed brake booster, removed wheel cylinders, removed brake calibers and brake hoses. Being 50 year old parts and keeping them unrestored and original I'm getting everything checked out. Thanks for all your help guys. Hopefully back together for GM carlisle. Stay safe and Have a Blessed Easter Everyone. Remember JESUS is the Reason for the Season.
Reply With Quote
The Following User Says Thank You to bugsy For This Useful Post:
'69Novajoe (04-16-2020)
  #20  
Old 04-11-2020, 05:28 PM
earntaz earntaz is offline
Yenko Contributing Member
 
Join Date: Mar 2010
Location: Republic of Texas
Posts: 4,620
Thanks: 6,842
Thanked 647 Times in 360 Posts
Default

Quote:
Originally Posted by bugsy View Post
Removed the master cylinder and all the valves attached, removed brake booster, removed wheel cylinders, removed brake calibers and brake hoses. Being 50 year old parts and keeping them unrestored and original I'm getting everything checked out. Thanks for all your help guys. Hopefully back together for GM carlisle. Stay safe and Have a Blessed Easter Everyone. Remember JESUS is the Reason for the Season.
Same to you and yours -- have a safe and very Happy EASTER ... Craig
__________________
You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 06:04 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.

O Garage vBulletin Plugins by Drive Thru Online, Inc.