redrumm3 wrote: ↑Tue Mar 20, 2018 5:38 pm
When you had the new subframe installed, were new upper and lower control arm bushings installed at that time? If not, I would take a look at them to see there condition. If there are any cracks in the bushings they need to be replaced. If they were replaced, when they installed them were they tightened down while the car was in the air or on the ground? The final tightening to the proper torque should be done under load with the wheels supporting the car.
AFAIK, none of the bushings/control arms were replaced when the new subframe was installed. I have inspected all the bushings and all seem to be in great shape. None of the protective rubber boots were torn, and all exposed bushings were free of cracks and had no signs of damage. I am also unsure of the method the shop used to re-install the subframe, but I assume (given the shop's reputation and knowing the owner) that installation was carried out as specified.
redrumm3 wrote: ↑Tue Mar 20, 2018 5:38 pm
Although unlikely given that you stated the rotors and pads were
OEM, there could be an issue with the pads bedding properly with the rotors. Look at the rotors to see if the wear is even and smooth across the face and that there isn't any spotting on the rotors. Look at the back side of the rotors as well.
Also unlikely but possible, is that you have a rotor(s) that was a bad casting or that is not true and that as you have driven the car and the rotor(s) have heat cycled the problem has become more noticeable.
If either is the case replacement is the only cure.
Each pad looks worn to the same degree (same thickness on all 4 pads). There were pad-shaped marks on the rotors, but it appeared to just be dust and was easily wiped away with my thumb, leaving no uneven surface on the rotors. This dust print was on both rotors on the outside and inside faces. But other than those, each face looked clean with no abnormalities. Maybe this would give me a good excuse to go down the Big Brake upgrade route..
I also found this: Upon visual inspection, the pads had not come off the rotor entirely. Earlier this morning, it was the inside pad on both sides (on my 1-piston calipers, the piston is on the inboard side of the caliper), but this afternoon (right now), both pads on both sides are gripping the rotor slightly. I assume this is because the power-assist system is not activated and they can't return to 100% off the pad, and I don't notice excessive heat buildup while driving, so this seems like a non-issue. But this has been the case for as long as we've owned the car (approaching 3 years) and none of the 4 shops it has seen (and with some frequency) have made any mention of this.
hornhospital wrote: ↑Tue Mar 20, 2018 8:19 pm
OnTheFritz wrote: ↑Tue Mar 20, 2018 6:49 am
no steering box mount reinforcement yet
This could well be the entire problem.
You may very well be right. I'm surprised it didn't happen before the new subframe went in, but I guess we just wanted an operational daily driver again rather than waiting longer. (after the car had been in the shop for 3 weeks

)