S550 2017 Mustang GT Build Thread Profile - S550 Mustangs

[Junkyard Dog]

And why does that little red piece lock the setting in place? Is it just because, instead of a slot, it has what looks like two little holes for mounting the upper control arm?

Then that also means that it has only two positions for rear camber, correct?

 

[jklapko10]

And why does that little red piece lock the setting in place? Is it just because, instead of a slot, it has what looks like two little holes for mounting the upper control arm?

Then that also means that it has only two positions for rear camber, correct?

Yes there's only 2 positions for it- full positive or full negative. But with an eccentric camber arm like that BMR or MMR that I have, camber for the alignment is fully set by making that arm longer/shorter.

In theory I think the S650 has the same setup so it could come loose....I guess anything that was designed to just use a bolt to clamp the arm in place could. My clamping bolts just decided to stop clamping.

 

[jklapko10]

Also have to remember this car is 10 years old at this point so a new OEM upper control arm bolt probably could have solved it, I was also hypothesizing that those MMR arms have solid bushings, factory are rubber and those BMR look like Delrin. Maybe there was some vibration getting passed onto the bolt/connection that the OEM bushings absorbed that worked it loose.