Off center calipers?

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KG7STN

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Jul 20, 2016
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I just replaced my front rotors on my 93 and rebuilt my original calipers. I sourced new oem pads from wits end. Now when it's all reassembled, my calipers are so off center that the inner pads on either side will not go in. The outer pads have about .050" clearance. I did not replace the bearings in the hub as they are new, i just packed fresh grease in them. I'm using new brembo rotors that have all the correct oem dimensions (I checked). Can anyone tell me if they've seen this before and what's the fix? Thanks!

20221002_181716.jpg


20221003_172934.jpg
 
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KG7STN said:
I'm waiting on braided steel brake lines from cruiser Bros so no big deal to wait for pads. Hopefully Joey at wits end will take these incorrect pads back, he usually does if stuff is in good condition. I'll buy the new ones from him if he has them. They are 04465-60110 for the 93.
Click to expand...

I'll ask again...

I do not see a backing plate in your photos. Where is it?
 
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The brake backing plates need to be installed to space the spindles out correctly.
If they are missing ( I don't see them), that's the problem.
 
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It’s not the pads, 100 series pads are compatible without the shims. Lots of people consider them an upgrade over the 80 series pads.

You asked for advice and an expert chimed in and gave it to you. I would recommend that you say thank you and take the advice.
 
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cruiserdan said:
The brake backing plates need to be installed to space the spindles out correctly.
If they are missing ( I don't see them), that's the problem.
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? - the workshop manual has the backing plates outside of the spindle, not in between the spindle and knuckle.
see @ 40:00

more likely a bearing race or disc issue
 
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robnicko said:
? - the workshop manual has the backing plates outside of the spindle, not in between the spindle and knuckle.
see @ 40:00

more likely a bearing race or disc issue
Click to expand...

You are correct. The backing plate is on the outside of the spindle in this case. It's been a long time since I had one torn down. In any event his backing plates are not visible and that put up a red flag for me. I also agree with your take regarding bearing race or rotor issues.

My BJ74 has had the plates eliminated and replaced by spacers.

At this point I think the rotor may not be firmly seated against the hub.

The photos suggest that the rotor is too far in. As It is not possible to over-drive the race into the hub the only other plausible cause is the rotor is not fully seated to the hub.
 
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This has happened to me more times than I care to admit. The root cause is the rear seal not being seated fully.
 
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bhmmapping said:
It’s not the pads, 100 series pads are compatible without the shims. Lots of people consider them an upgrade over the 80 series pads.

You asked for advice and an expert chimed in and gave it to you. I would recommend that you say thank you and take the advice.
Click to expand...
Jesus dude chill out already. I got busy doing other s***.
 
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cruiserdan said:
You are correct. The backing plate is on the outside of the spindle in this case. It's been a long time since I had one torn down. In any event his backing plates are not visible and that put up a red flag for me. I also agree with your take regarding bearing race or rotor issues.

My BJ74 has had the plates eliminated and replaced by spacers.

At this point I think the rotor may not be firmly seated against the hub.

The photos suggest that the rotor is too far in. As It is not possible to over-drive the race into the hub the only other plausible cause is the rotor is not fully seated to the hub.
Click to expand...
OK I'm looking at it now. The rotor is fully seated. But yes my dust covers have been removed I can't remember why my tech did that. I will remember as soon as I hit send. So the backing plate actually keeps the rotor out about .050? I didn't remove them so I don't know. I can't tell from the front end poster I got from Joey.
 
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cruiserdan said:
You are correct. The backing plate is on the outside of the spindle in this case. It's been a long time since I had one torn down. In any event his backing plates are not visible and that put up a red flag for me. I also agree with your take regarding bearing race or rotor issues.

My BJ74 has had the plates eliminated and replaced by spacers.

At this point I think the rotor may not be firmly seated against the hub.

The photos suggest that the rotor is too far in. As It is not possible to over-drive the race into the hub the only other plausible cause is the rotor is not fully seated to the hub.
Click to expand...
Sorry cruiserdan I wasn't understanding you because those are called dust covers. By backing plates I thought you meant the anti squeal plates behind the pads. But the dust cover sits in front of the spindle correct?
 
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Just to re-cap the situation. I don't know if you can tell from these images but the rotor sits about .050" closer to the inside half of the brake caliper. Yes I split the caliper halves while doing the rebuild but even if I really messed that up it wouldn't account for the issue at hand. The bearings and races are Koyo and have less that 8k miles on them. All road miles. The off- center condition wouldn't bother me if the new pads would fit. Technically the rotor should be dead center of the caliper. The dust covers were left off but they sit outside the spindle flange so that's not the cause. Thanks for all your help y'all, especially c'dan!

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KG7STN said:
Just to re-cap the situation. I don't know if you can tell from these images but the rotor sits about .050" closer to the inside half of the brake caliper. Yes I split the caliper halves while doing the rebuild but even if I really messed that up it wouldn't account for the issue at hand. The bearings and races are Koyo and have less that 8k miles on them. All road miles. The off- center condition wouldn't bother me if the new pads would fit. Technically the rotor should be dead center of the caliper. The dust covers were left off but they sit outside the spindle flange so that's not the cause. Thanks for all your help y'all, especially c'dan!

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View attachment 3136276
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20221009_163000.jpg


20221009_163005.jpg
 
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