C2 Front brake calipers....what am I missing here??? - CorvetteForum - Chevrolet Corvette Forum Discussion

Go Back  CorvetteForum - Chevrolet Corvette Forum Discussion > C1 & C2 Corvettes, 1953 - 1967 > C1 & C2 Corvettes
Reload this Page >

[C2] Front brake calipers....what am I missing here???

Notices
C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

[C2] Front brake calipers....what am I missing here???

Old 11-27-2018, 06:10 PM
  #1  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default 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:








Front left top and bottom:








Any thoughts as to what might be the issue would be greatly appreciated!

Thanks,
Greg

Last edited by FLYNAVY30; 11-27-2018 at 06:13 PM.
FLYNAVY30 is offline  
Old 11-27-2018, 06:16 PM
  #2  
hcallaway
CF Senior Member
Support Corvetteforum!
 
Member Since: Sep 2017
Location: Richmond Virginia
Posts: 166
Thanked 28 Times in 27 Posts
Default

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.
hcallaway is offline  
Old 11-27-2018, 06:18 PM
  #3  
Nowhere Man
CF Senior Member
 
Nowhere Man's Avatar
 
Member Since: Feb 2003
Location: Sitting in his Nowhere land Hanover Pa
Posts: 33,425
Thanked 1,405 Times in 1,280 Posts
2015 C2 of Year Finalist
Default

they changed the spindle in 68/69 can't remember the year. so make sure what you got is right
Nowhere Man is offline  
Old 11-27-2018, 06:22 PM
  #4  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by hcallaway View Post
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.
Fixed the photos.

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
FLYNAVY30 is offline  
Old 11-27-2018, 06:32 PM
  #5  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by Nowhere Man View Post
they changed the spindle in 68/69 can't remember the year. so make sure what you got is right
I used part # FS-36E from Van Steel which is listed as "63-68 Front Spindle w/ Steering Arm". They also have an FS-36L listed for 69-82 cars. That being said, shouldn't the geometry for the calipers be the same given the fact the part number for the caliper mounting bracket covers 63-82 cars and the Wilwood part number is also listed for 65-82 cars?
FLYNAVY30 is offline  
Old 11-27-2018, 06:38 PM
  #6  
Nowhere Man
CF Senior Member
 
Nowhere Man's Avatar
 
Member Since: Feb 2003
Location: Sitting in his Nowhere land Hanover Pa
Posts: 33,425
Thanked 1,405 Times in 1,280 Posts
2015 C2 of Year Finalist
Default

Call Wilwood and ask them.
Nowhere Man is offline  
Old 11-27-2018, 06:40 PM
  #7  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by Nowhere Man View Post
Call Wilwood and ask them.
Yup, on the list of things to do for tomorrow.....nothings ever easy!!
FLYNAVY30 is offline  
Old 11-27-2018, 06:41 PM
  #8  
Nowhere Man
CF Senior Member
 
Nowhere Man's Avatar
 
Member Since: Feb 2003
Location: Sitting in his Nowhere land Hanover Pa
Posts: 33,425
Thanked 1,405 Times in 1,280 Posts
2015 C2 of Year Finalist
Default

Originally Posted by FLYNAVY30 View Post
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.
Nowhere Man is offline  
Old 11-27-2018, 06:49 PM
  #9  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by Nowhere Man View Post
well I was taught years ago when adding non OEM parts add time to make them work.
Agreed completely, although in this case, 95% of the components are OEM and the calipers are a proven, bolt on factory replacements for the OEM calipers. I guess that's the frustrating part, having tried to make multiple aftermarket parts work together in the past, I specifically tried to limit this project to mostly OEM components....oh well. Hopefully someone running the D8 calipers will chime in.
FLYNAVY30 is offline  
Old 11-27-2018, 09:12 PM
  #10  
Rob_64-365
CF Senior Member
 
Rob_64-365's Avatar
 
Member Since: Aug 2005
Location: New Baltimore Michigan
Posts: 523
Thanked 62 Times in 49 Posts
Default

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.


This is from the top looking down, pass side.

This is from the front looking rearward, pass side.

Last edited by Rob_64-365; 11-28-2018 at 12:12 AM.
Rob_64-365 is offline  
Old 11-27-2018, 10:02 PM
  #11  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by Rob_64-365 View Post
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.
FLYNAVY30 is offline  
Old 11-27-2018, 10:12 PM
  #12  
tf104
Junior Member
 
Member Since: Feb 2017
Location: Roseville CA
Posts: 23
Thanked 2 Times in 2 Posts
Default

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?
tf104 is offline  
Old 11-27-2018, 10:17 PM
  #13  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by tf104 View Post
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?
Yes, dust shield in place, along with the spindle gasket. I'm sure I'm missing something small or stupid here, but I really can't figure out what it is. Ill get some more pics up tomorrow and hopefully someone can spot something I'm missing.

Thanks
FLYNAVY30 is offline  
Old 11-28-2018, 12:25 AM
  #14  
Rob_64-365
CF Senior Member
 
Rob_64-365's Avatar
 
Member Since: Aug 2005
Location: New Baltimore Michigan
Posts: 523
Thanked 62 Times in 49 Posts
Default

Originally Posted by FLYNAVY30 View Post
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 just bolted mine up, & tightened them as I would any caliper on any brake job I've ever done, so not to a specific torque. I have to lift the body off & I am replacing all wiring, fuel & brake lines, & changing over to a dual master cyl also, I'll check torques before the body goes back on. Things may come apart again before my final install so I wasnt too concerned on this first fitting.
One offset trailing arm install to go & I'm rolling again!

Last edited by Rob_64-365; 11-28-2018 at 12:26 AM.
Rob_64-365 is offline  
Old 11-28-2018, 09:05 AM
  #15  
DansYellow66
CF Senior Member
 
DansYellow66's Avatar
 
Member Since: Jan 2003
Location: Central Arkansas
Posts: 10,377
Thanked 606 Times in 548 Posts
Default

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.
DansYellow66 is offline  
Old 11-28-2018, 09:20 AM
  #16  
69ttop502
CF Senior Member
 
69ttop502's Avatar
 
Member Since: Mar 2001
Location: Watkinsville, GA and Roslyn, NY GA and NY
Posts: 3,890
Thanked 188 Times in 173 Posts
Default

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

Last edited by 69ttop502; 11-28-2018 at 09:27 AM.
69ttop502 is offline  
Old 11-28-2018, 09:21 AM
  #17  
69ttop502
CF Senior Member
 
69ttop502's Avatar
 
Member Since: Mar 2001
Location: Watkinsville, GA and Roslyn, NY GA and NY
Posts: 3,890
Thanked 188 Times in 173 Posts
Default

Originally Posted by DansYellow66 View Post
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.
Problem is on the front, the caliper mounts to the outside of the bracket so you canít move the caliper inward.
69ttop502 is offline  
Old 11-28-2018, 09:25 AM
  #18  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by 69ttop502 View Post
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, donít 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....
FLYNAVY30 is offline  
Old 11-28-2018, 09:25 AM
  #19  
FLYNAVY30
CF Senior Member
Thread Starter
 
FLYNAVY30's Avatar
 
Member Since: Sep 2002
Location: Norfolk VA
Posts: 3,744
Thanked 167 Times in 104 Posts
Default

Originally Posted by 69ttop502 View Post


Problem is on the front, the caliper mounts to the outside of the bracket so you canít move the caliper inward.
exactly
FLYNAVY30 is offline  
Old 11-28-2018, 09:37 AM
  #20  
Tampa Jerry
CF Senior Member
 
Member Since: Aug 2005
Location: Temple Terrace Florida
Posts: 2,826
Thanked 131 Times in 121 Posts
Default

I read on the C-3 section that a poster had the same problem. He ended up shimming the caliper mounting bolt. Jerry
Tampa Jerry is offline  

Thread Tools
Search this Thread
Sponsored Ads
Vendor Directory

Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: