Bleeding brakes
Thread Starter
Instructor
Joined: May 2012
Posts: 103
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From: Warren MI
Bleeding brakes
I have a '78 Vette and working on the brakes. On a Google search that explained bleeding brakes on a "77 it said to follow the squence RR, LR, RF and LF. I have the OEM 1978 Chevy Manual which shows that for all other Chevy models except the "Y" model or the Corvette which shows LR, RR, LF and RF. No mention of inner or outer sequence either.
They say always follow the book but I wonder why the sequence would be different?
They say always follow the book but I wonder why the sequence would be different?
Race Director
Joined: Oct 2000
Posts: 17,102
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From: Fair Oaks, OK
On the rear bleed the inner first then the outer.
Also, on any car, a good rule of thumb is to bleed the farthest wheel from the MC first, and work your way closer one wheel at a time. As long as you get all of the air out of the system, it shouldn't amount to a hill of beans anyway.
Thread Starter
Instructor
Joined: May 2012
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From: Warren MI
I'm pulling all the calipers and got to the front to find the rigid to flexible fitting at the frame(3/8") is rounded off from the factory! Can only get my flare nut wrench on it in one position too.
Nuff for today.
Le Mans Master
Joined: Jan 2006
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From: Butler Pa
Thread Starter
Instructor
Joined: May 2012
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From: Warren MI
As I remember, flip headlights had to be adjusted and threaded turn buckles looked like somebody used channel locks on the threads. It had lots of thin paint in areas and to be repaired.
Quality wasn't too good back then and paying 3K over list on top of that.
BTW: Other side was slightly rounded off but it came off with a cracking sound like the rears did with the wrench was stuck on it. I completely rounded off the one too. Both lines should be replaced.
Le Mans Master
Joined: Jan 2006
Posts: 6,497
Likes: 136
From: Butler Pa
Because I'm the orginal owner! The brakes, other than removing the pads and putting some anti-squeak goop on them, they've never been touched. Only 13,692 miles on it and hadn't been driven since 2001.
As I remember, flip headlights had to be adjusted and threaded turn buckles looked like somebody used channel locks on the threads. It had lots of thin paint in areas and to be repaired.
Quality wasn't too good back then and paying 3K over list on top of that.
BTW: Other side was slightly rounded off but it came off with a cracking sound like the rears did with the wrench was stuck on it. I completely rounded off the one too. Both lines should be replaced.
As I remember, flip headlights had to be adjusted and threaded turn buckles looked like somebody used channel locks on the threads. It had lots of thin paint in areas and to be repaired.
Quality wasn't too good back then and paying 3K over list on top of that.
BTW: Other side was slightly rounded off but it came off with a cracking sound like the rears did with the wrench was stuck on it. I completely rounded off the one too. Both lines should be replaced.
So you're saying these are the original caliper that have never been rebuilt and they don't leak?
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Racer
Joined: Feb 2012
Posts: 390
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From: Livonia MI
There does tend to be a debate on the proper order for bleeding.
If I were you, I would bench bleed the Master Cylinder, then follow the sequence in the manual. Since they don't differentiate between inner and outer, follow convention and do the inner first then the outer.
You should be able to tell pretty quick if it worked. If it doesn't, then try whatever sequence your would like. All it costs is a little time and a bottle of fluid.
If I were you, I would bench bleed the Master Cylinder, then follow the sequence in the manual. Since they don't differentiate between inner and outer, follow convention and do the inner first then the outer.
You should be able to tell pretty quick if it worked. If it doesn't, then try whatever sequence your would like. All it costs is a little time and a bottle of fluid.
Le Mans Master
Joined: Aug 2006
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From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
I have a '78 Vette and working on the brakes. On a Google search that explained bleeding brakes on a "77 it said to follow the squence RR, LR, RF and LF. I have the OEM 1978 Chevy Manual which shows that for all other Chevy models except the "Y" model or the Corvette which shows LR, RR, LF and RF. No mention of inner or outer sequence either.
They say always follow the book but I wonder why the sequence would be different?
They say always follow the book but I wonder why the sequence would be different?
http://forums.corvetteforum.com/c3-t...fo-please.html
While your ordering the hard lines you might want to get new rubber lines also.
Those original caliper are not sleeved, are you trying to keep everything original?
Thread Starter
Instructor
Joined: May 2012
Posts: 103
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From: Warren MI
Is there a source for parts like brake lines? I have to look into nipping of the end and reflaring.
Burning Brakes
Joined: May 2008
Posts: 1,116
Likes: 5
From: Middleburg Florida
I have a '78 Vette and working on the brakes. On a Google search that explained bleeding brakes on a "77 it said to follow the squence RR, LR, RF and LF. I have the OEM 1978 Chevy Manual which shows that for all other Chevy models except the "Y" model or the Corvette which shows LR, RR, LF and RF. No mention of inner or outer sequence either.
They say always follow the book but I wonder why the sequence would be different?
They say always follow the book but I wonder why the sequence would be different?
Burning Brakes
Joined: May 2008
Posts: 1,116
Likes: 5
From: Middleburg Florida
I didn't add that it hadn't been started since 2001 either! One squirt of Quick Start, about 5 seconds of cranking and started right up. I was going to try the tranny when the brake pedal with all the way to the floor. No brake fluid in the fill tank, checked underside, RF tire a bit wet and LR was soaked.
Is there a source for parts like brake lines? I have to look into nipping of the end and reflaring.
Is there a source for parts like brake lines? I have to look into nipping of the end and reflaring.
Thread Starter
Instructor
Joined: May 2012
Posts: 103
Likes: 0
From: Warren MI
The sequence doesn't matter, see post #3
http://forums.corvetteforum.com/c3-t...fo-please.html
While your ordering the hard lines you might want to get new rubber lines also.
Those original caliper are not sleeved, are you trying to keep everything original?
http://forums.corvetteforum.com/c3-t...fo-please.html
While your ordering the hard lines you might want to get new rubber lines also.
Those original caliper are not sleeved, are you trying to keep everything original?
Last edited by wptski; May 29, 2012 at 10:57 PM.
Thread Starter
Instructor
Joined: May 2012
Posts: 103
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From: Warren MI
Removing the front steel brake lines now, loose up to the distribution block.
Just wondering if I'm going to be able to remove the cross-over line from the right side without removing something in my way??????
Anybody else ever replace that line?
Just wondering if I'm going to be able to remove the cross-over line from the right side without removing something in my way??????
Anybody else ever replace that line?