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Front brake calipers....what am I missing here???
Doing a front disc brake swap on my '64 coupe. All parts are factory '65 and later pieces from Van Steel: -spindle -steering knuckle -caliper bracket -backing plate -hub/bearing -disc The only exception is the Wilwood D8 calipers which are bolt on replacements for the factory calipers...so in theory, it should be a pretty straight forward install. As you can see in the pics below, the calipers on both sides are offset outboard about 1/8 of an inch too far, causing the disc to be locked up against the inside of the caliper when the mounting bolts are snugged down. Front right top and bottom: https://cimg0.ibsrv.net/gimg/www.cor...4a1a8c2ba.jpeg https://cimg1.ibsrv.net/gimg/www.cor...78154b5fd.jpeg Front left top and bottom: https://cimg5.ibsrv.net/gimg/www.cor...21af68e62.jpeg https://cimg4.ibsrv.net/gimg/www.cor...e82d67cfe.jpeg Any thoughts as to what might be the issue would be greatly appreciated! Thanks, Greg |
Greg the pictures did not post on my phone; however, in the past I have had a similar issue on another restoration, It was the taper of the bearing not allowing the disc to seat fully. |
they changed the spindle in 68/69 can't remember the year. so make sure what you got is right
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Originally Posted by hcallaway
(Post 1598404668)
Greg the pictures did not post on my phone; however, in the past I have had a similar issue on another restoration, It was the taper of the bearing not allowing the disc to seat fully. I'm relatively sure the disc is completely seated at this point. Even if it isn't, that would move the disc even further inboard, making the interference worse than it is. In any case, what was the eventual solution in your situation? Thanks, Greg |
Originally Posted by Nowhere Man
(Post 1598404683)
they changed the spindle in 68/69 can't remember the year. so make sure what you got is right
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Call Wilwood and ask them.
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Originally Posted by Nowhere Man
(Post 1598404813)
Call Wilwood and ask them.
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Originally Posted by FLYNAVY30
(Post 1598404831)
Yup, on the list of things to do for tomorrow.....nothings ever easy!!
well I was taught years ago when adding non OEM parts add time to make them work. |
Originally Posted by Nowhere Man
(Post 1598404847)
well I was taught years ago when adding non OEM parts add time to make them work.
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You look like you are right where I am with my 64 disk brake conversion, although I have the complete Van Steel OEM set up. I have not put the pads in yet, but mine looks pretty centered. Here are a few pics for reference.
https://cimg5.ibsrv.net/gimg/www.cor...3dc70aaffe.jpg This is from the top looking down, pass side. https://cimg1.ibsrv.net/gimg/www.cor...49d5765ec0.jpg This is from the front looking rearward, pass side. |
Originally Posted by Rob_64-365
(Post 1598405714)
You look like you are right where I am with my 64 disk brake conversion, although I have the complete Van Steel OEM set up. I have not put the pads in yet, but mine looks pretty centered. Here are a few pics for reference.
Yea, you're spacing looks a lot better than mine. I've been talking back and forth with Dan at Van Steel (very helpful) and he suggested loosening the bolts on the caliper mounting brackets, then seeing if I can adjust them a bit, and then retighten them to move the caliper slightly. He said that they are susceptible to warping slightly if you over torque the mounting bolts. Torque specs I found were 70 ft/lbs for the bottom two bolts, and 110 ft/lbs for the big one up top....is that what you used? I'm also going to call Wilwood in the morning and see if they've had any other customers with a similar issue. |
interesting I just walked in from the garage after bolting on my d_8 calipers and hooking up brake lines for the final time everything fit perfect .
I do have a 65 and all other parts are original. Not sure how everything stacks together , Do you have the dust shield in place? |
Originally Posted by tf104
(Post 1598406058)
interesting I just walked in from the garage after bolting on my d_8 calipers and hooking up brake lines for the final time everything fit perfect .
I do have a 65 and all other parts are original. Not sure how everything stacks together , Do you have the dust shield in place? Thanks |
Originally Posted by FLYNAVY30
(Post 1598406006)
Torque specs I found were 70 ft/lbs for the bottom two bolts, and 110 ft/lbs for the big one up top....is that what you used?
One offset trailing arm install to go & I'm rolling again! |
A bent spindle will result in that but since you have it on both sides it must be something in the machining of the calipers. You may have to use a hardened washer for a spacer to center it.
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Just went through this on my 69. Turned out my caliper bracket was bent. A few blows with the hammer and all is well. Now since you have it on both sides, don’t know. Here is my thread on the subject. https://www.corvetteforum.com/forums...ing-issue.html |
Originally Posted by DansYellow66
(Post 1598407417)
A bent spindle will result in that but since you have it on both sides it must be something in the machining of the calipers. You may have to use a hardened washer for a spacer to center it.
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Originally Posted by 69ttop502
(Post 1598407499)
Just went through this on my 69. Turned out my caliper bracket was bent. A few blows with the hammer and all is well. Now since you have it on both sides, don’t know. That is interesting though, because while its the problem is the same on both sides, the interference is definitely greater on the driver side. With the caliper bolts snugged down on the driver side, the disc is completely locked up. On the passenger side, you can still turn the disc by hand with a little effort, but you can hear and see it dragging. I'm half tempted to buy another set of caliper brackets and see where that gets me.... |
Originally Posted by 69ttop502
(Post 1598407508)
Problem is on the front, the caliper mounts to the outside of the bracket so you can’t move the caliper inward. |
I read on the C-3 section that a poster had the same problem. He ended up shimming the caliper mounting bolt. Jerry
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