Reply to "Cracked control arm"

GhostRidr,

I will add my voice to the chorus ...

I would not repair the lower A-arm. It is a primary structural part of the car. REPLACE IT !! Besides, you do not know the condition of the A-arms inside the A-arm tubes. Looking at your photo I would be very suspect.

There is one other possible cause for the failure. If there is any way moisture can enter your lower A-Arm it will run down to the area where it attaches to your upright. There it sits because it has no-where else to go and it corrodes from the inside - to a point where the structural strength has been reduced and it starts cracking. Your photo appears to indicate that failure mode.

The Hall screw-on aluminum A-arm covers were not a good idea because of the possibility of introducing a moisture path to the inside of the A-arm. I have those very same Hall A-arm covers. I took extra care to seal the screw holes as best I could. I also inspected the A-arms for any voids that could cause moisture ingress. The clip-on A-arm covers are a better idea. I also have the PPC (Denis Q.) greasable lower upright shafts and would recommend those as well.

B.G.