As previously discussed, the Miata has been making some clunking noises during turning and braking. Were it a car with power, it might make noise during acceleration, too. This problem has been well-documented to be caused by movement of the alignment cams. After the autocross I put dabs of paint on all 8 cams (two per corner to adjust toe, camber, and caster). I re-inspected today after about 200 miles of driving, and none had moved (yay!). Hopefully this means my super-duper alignment is still intact.
Front right wheel, rear cam.
Close-up of cam, note paint dot ensuring alignment.
Front left, rear cam. Also in good shape.
To protect things in the future and reduce the noise, I used a high-tech breaker bar setup to tighten the front cams. I had not heard any noise from the rear, so those are staying the way they are.
Shakedown run with the G-dawg as navigator showed that noise is definitely reduced. Slight clunk on hard braking, but I can live with that. Since the cams are marked, I can always dial the alignment back in should things shift.
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