08-24-2015, 05:28 PM
Join Date: Apr 2012
Total Cats: -2
Clicking from wheel under cornering load and clunk from braking
I have 11.75 BBK from 949 and when I originally installed it, i bent the stock dust shield so that it would clear the rotor and the caliper bracket.
Under full lock (in parking lots) it started to make ticking noise.
I unbolted and fully removed the shield and the ticking went away.
When I went to the track it came back while driving. It seems to be load related as cornering hard with not alot of steering input (around 90 degrees)it will make the noise, but in parking lot it will not make the noise with the same input, only when close to full lock or at full lock.
I can't find any signs of rubbing, on the wheel, or suspension components.
I tried to clean the wheel mating surfaces as well, and i loosened the hub spindle nut and retightened and restaked it. (it tighted around 80 degrees more than before)
Originally, before removing the shield the clicking was present on both directions (I can't recall where the noise was coming from, I just assumed that they are coming from the shields and was going to remove them during track prep) When the clicking came back at the track it only happens during right turns and the clicking comes from front driver side wheel/hub/brake area.
I can't figure out whats going on... Do I just buy new hubs and hope that this will fix the problem?
Also another issue is that I used to have a clunk in a tight corner, which I believe is related to alignment bolts. but during the recent track day, the clunking was present in almost all corners and under hard braking. (sometimes i would get 2 consecutive smaller clunks during mid corner as opposed to 1 hard clunk). Since then if I tried to brake really hard on street, it would clunk as well.
I checked the alignment bolts and they were really tight i did tighten them another 45 degrees since I have ordered new ones from mazda to replace the current older style alignment bolts. Even though they are super tight now, i can still get a clunk under hard braking. Any ideas or previous experiences shared regarding these 2 noises would be really appriciated.