1962 corvette disc brake conversion problem
Thread Starter
2nd Gear
Joined: May 2012
Posts: 2
Likes: 0
1962 corvette disc brake conversion problem
hello to all, I have purchased a disc brake conversion kit from ecklers, I have followed every single step everything is installed but for some reason I cannot bleed the lines. Can anyone help me out?
Thanks
Thanks
Race Director
Joined: Jun 2006
Posts: 17,901
Likes: 751
From: Inverness FL
St. Jude Donor '07
did you inadvertently drain the master cylinder? if so, it needs to be bled first.
the only possible reason mechanically i can think of is if the calipers are somehow installed with the bleeder screw at the bottom rather than the top of the caliper..., otherwise they should bleed like any other wheel cylinder
how are you bleeding it? someone helping you? pressure bleeder? vacuum bleeder?
Bill
the only possible reason mechanically i can think of is if the calipers are somehow installed with the bleeder screw at the bottom rather than the top of the caliper..., otherwise they should bleed like any other wheel cylinder
how are you bleeding it? someone helping you? pressure bleeder? vacuum bleeder?
Bill
Last edited by wmf62; May 10, 2012 at 09:18 PM.
Race Director
Joined: Jun 2006
Posts: 17,901
Likes: 751
From: Inverness FL
St. Jude Donor '07
Bill
Racer
Joined: Jun 2009
Posts: 333
Likes: 22
From: Chicago Ill.
I had the same problem. tryed everything . Got rid of the combination valve and use a adjustable valve for the rears , the combination valve was shifting when bleeding. And also use risidual check valves in the lines , 2lb's for the front disk brakes and 10lb's for the rear drum brakes. now I can get a hard pedal.
Race Director
Joined: Nov 2000
Posts: 10,340
Likes: 664
From: Beverly Hills (Pine Ridge) Florida
Let's ask some basic questions:
Is this a dual master cylinder conversion, or are you using the original single M/C?
I assume you are getting fliud out the bleeders, but not getting a hard pedal?
Note: If you are using the original M/C, you will need to remove the residual pressure valve located at the front of the M/C (requires disassembly of the M/C), to prevent the disc brakes from dragging. I have no residual pressure valves (front discs / rear drums using the original M/C), and know of several other C1 Vettes with essentially the same system, and they have never had an issue.
Plasticman
Is this a dual master cylinder conversion, or are you using the original single M/C?
I assume you are getting fliud out the bleeders, but not getting a hard pedal?
Note: If you are using the original M/C, you will need to remove the residual pressure valve located at the front of the M/C (requires disassembly of the M/C), to prevent the disc brakes from dragging. I have no residual pressure valves (front discs / rear drums using the original M/C), and know of several other C1 Vettes with essentially the same system, and they have never had an issue.
Plasticman
Last edited by Plasticman; May 17, 2012 at 10:44 PM.
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Instructor
Joined: Aug 2001
Posts: 145
Likes: 1
From: Crown Point IN
Always bench bleed the calipers before you install them. Using the master cylinder to bench bleed is tough because you are trying to force an air bubble to travel against gravity (air rises). If you have the means, get a pressure bleeder - you'll be done in 10 minutes and never have a soggy pedal again.
