Whiskey Tango Foxtrot - collapsed caliper - Pontiac Solstice Forum
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post #1 of 6 (permalink) Old 02-13-2017, 11:33 PM Thread Starter
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Unhappy Whiskey Tango Foxtrot - collapsed caliper

And, the #1 thing I did not expect to see after completing a 100 mile drive home this morning:



Somehow, the hub or caliper has moved, and the caliper and rotor were having a spark-generating party. I didn't hear anything weird until about a block away from home. It would explain why someone was driving in my blindspot for 5 minutes, probably live-streaming sparks on YouTube.

Anyone have a spare Wilwood 4-pot FSL sitting around?
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Blue-ish 2006 2.4, Werks stage 1 turbo, GMPP cat-back, TCE Wilwood 6 piston front brakes, 4-piston rears , Stainless brake lines, slotted and drilled rotors, DDM braces, BR Racing coilovers, Spec aluminum flywheel, Spec stage 2 clutch, Werks aluminum radiator, DDM oil catch can, Autometer boost, water and AFR gauges, RKSport hood, Morimoto FX-R HID headlights, GReddy Profec boost controller @ 13PSI, custom A-pillar gauge pod.
In progress: custom fiberglass trunk lid.

Currently on engine #4!

Last edited by raygun; 02-14-2017 at 01:35 AM.
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post #2 of 6 (permalink) Old 02-14-2017, 06:07 AM
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What let go???

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post #3 of 6 (permalink) Old 02-14-2017, 06:43 AM Thread Starter
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Quote:
Originally Posted by Sly Bob View Post
What let go???
I'm not sure, haven't had the time to take it apart yet.

There are only a few possibilities, though.

1. Either the rotor has moved - and thus the hub and wheel bearing - which is NOT good, or
2. The caliper has moved, which would require loose caliper-to-bracket or bracket-to-knuckle bolts.


The position of the pad in that picture looks weird to me, but I couldn't really get a good look at it. The pedal does not feel good and the ABS light came on, so *something* else is going on.

I'll find out more this weekend. I'm just glad I made it home without losing the wheel or the brakes. I should probably reconsider that whole "I don't need a parking brake" position.
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Blue-ish 2006 2.4, Werks stage 1 turbo, GMPP cat-back, TCE Wilwood 6 piston front brakes, 4-piston rears , Stainless brake lines, slotted and drilled rotors, DDM braces, BR Racing coilovers, Spec aluminum flywheel, Spec stage 2 clutch, Werks aluminum radiator, DDM oil catch can, Autometer boost, water and AFR gauges, RKSport hood, Morimoto FX-R HID headlights, GReddy Profec boost controller @ 13PSI, custom A-pillar gauge pod.
In progress: custom fiberglass trunk lid.

Currently on engine #4!

Last edited by raygun; 02-14-2017 at 11:32 AM.
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post #4 of 6 (permalink) Old 02-16-2017, 01:10 PM Thread Starter
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I finally found time over lunch to jack the car up.

Fun:


One of the three hub bolts was completely gone, the other two were loose.

I had the hub off when I put the ARP studs in several months ago. I know I torqued those down with the torque wrench. At least, I thought so.

I can just see all three bolts coming out and the wheel rolling past me on the road. Now, torqued with lock-tite. I'll recheck them after driving around for a bit.

Blue-ish 2006 2.4, Werks stage 1 turbo, GMPP cat-back, TCE Wilwood 6 piston front brakes, 4-piston rears , Stainless brake lines, slotted and drilled rotors, DDM braces, BR Racing coilovers, Spec aluminum flywheel, Spec stage 2 clutch, Werks aluminum radiator, DDM oil catch can, Autometer boost, water and AFR gauges, RKSport hood, Morimoto FX-R HID headlights, GReddy Profec boost controller @ 13PSI, custom A-pillar gauge pod.
In progress: custom fiberglass trunk lid.

Currently on engine #4!

Last edited by raygun; 02-16-2017 at 01:12 PM.
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post #5 of 6 (permalink) Old 02-16-2017, 03:34 PM
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Hub bolts have been know to loosen. Mainly, I think, on cars that are autocrossed.

I assume you re-checked the others also?

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post #6 of 6 (permalink) Old 02-16-2017, 03:37 PM Thread Starter
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Quote:
Originally Posted by JohnWR View Post
Hub bolts have been know to loosen. Mainly, I think, on cars that are autocrossed.
Well... I've been doing a lot of that. :/

I haven't checked the other wheels - very busy day. (But I haven't been driving it - benefit of working from home.)

I also had the RH rear hub off to install the ARP studs. (I had to put spacers on to clear the rear brakes, so I went ahead and installed longer studs.) If I messed up one side, odds are the other isn't perfect.

On the plus side, that wonderful creaking sound I've been hearing when backing out of the driveway went away.

I am smrt. S-M-R-T.

Blue-ish 2006 2.4, Werks stage 1 turbo, GMPP cat-back, TCE Wilwood 6 piston front brakes, 4-piston rears , Stainless brake lines, slotted and drilled rotors, DDM braces, BR Racing coilovers, Spec aluminum flywheel, Spec stage 2 clutch, Werks aluminum radiator, DDM oil catch can, Autometer boost, water and AFR gauges, RKSport hood, Morimoto FX-R HID headlights, GReddy Profec boost controller @ 13PSI, custom A-pillar gauge pod.
In progress: custom fiberglass trunk lid.

Currently on engine #4!

Last edited by raygun; 02-16-2017 at 03:56 PM.
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