This is topic Why have I broken two LCA bolts? in forum Tech Talk at Northern California Ford Owners  .


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Posted by SF Coupe (Member # 1810) on :
 
I broke a lower control arm bolt (the axle side) several months ago and thought it was just a fluke. Well, now I just broke the other one (other side of the car on the axle). Anybody have this happen or know what's going on?
 
Posted by JoeT (Member # 298) on :
 
you overtorquing it when you put it on? pre-stressing it?

or maybe bolting the LCA up when the suspension is still up in the air aka unloaded?
 
Posted by mtbaughs (Member # 4052) on :
 
Are you using stock mustang bolts or different bolts. If different are they stock diameter and length? Check your control arms, the area of which the bolt slides through. Make sure there isn't any play here or in the metal insert. Check your upper control arms as well to make sure the bushings are not shot allowing for abnormal movement of the rear end.
 
Posted by specialty (Member # 2978) on :
 
try inspecting the bushing if there worn it will cause it to move a snap the bolt under hard accel
 
Posted by SF Coupe (Member # 1810) on :
 
quote:
Originally posted by JoeT:
you overtorquing it when you put it on? pre-stressing it?

or maybe bolting the LCA up when the suspension is still up in the air aka unloaded?
I did bolt them up with the axle hanging, this is bad?
 
Posted by Fostang (Member # 3752) on :
 
yup they need to be loose until you lower the car then it can be tightened.
 




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