My new, second gen BRZ is making noise that sounds like it's coming from the right rear suspension...
I've installed
Voodoo LCA's back there and
Racer X toe links. I have new coilovers with 700K springs.
I think the noise started during my first day on the track, where I was doing a car control clinic in the morning and track sessions in the afternoon. I had 600 miles on the car at that point and it became noticeable later in the morning during the car control clinic at LRP, which is like an autocross course or go-cart track with some elevation changes. The car's never had a hard launch.
It seems like it wasn't getting worse after I first noticed it at LRP. I did check things on my return and the right toe link locking nut had loosened.
NOW, I've added Blox 21mm/17mm sway bars. That's an increase of 36% in the front and 47% increase in the rear (from stock 2022 BRZ cross-section size). The rear sway bar was fairly resistant to moving when the brackets got tightened down. I sprayed the mounts with silicone spray.
The end links I made from McMaster-Carr high strength, 10mm bolt ID, ball ends with Teflon liners.
The noise was there before the sway bars and end links but now it seems like there's more noise and the frequency or amount of noises has increased. Now, when I drive on the street it sounds about like I'm making popcorn in the RR corner! There is an almost constant metallic popping/banging noise. I can't find anything loose, cracked, etc. All the "new" ball ends seem very tight. Most, if not all have Teflon liners, and they are new, if not almost new. The preload on the coilover springs seems correct and everything is tight. The springs are not loose at full droop.
Anyone have a similar experience?
FWIW, I have an STI track car with similar setup and it seemed quieter.