Quote:
Originally Posted by djpateman
Rear wheel position mystery on 911SC
WTB/Wanted: Left Trailing Arm 911SC IMMEDIATE NEED, please PM me
Axle slide side to side proper one side but other side tight due to bent Trailing Arm
Can an aluminum Trailing Arm get bent? Yes/No.
Can someone take exact same photo of undercarriage 911SC?
Aluminum Trailing Arm Casting Numbers, 74-77, 78-83, etc. Cross-fit of 911.331.513.OR
To summarize, you purchased this car recently, and the previous owner both knew about the problem, and tried to correct it. I presume you knew about it before purchasing. The car drives well, does not crab, and the primary evidence of the problem is the left wheel is inset much more thant the right side. The secondary evidence is that the left axle free play is absent. Other hints include the left lower shock mount, and the kink in the hard brake line. You also say that the left suspension droops more than the right when on a lift.
Despite the left arm is cleaner than the right I do not believe that it has been replaced; the lack of axle free play, the shock bolt and the brake line suggest that the left arm is bent.
The wheel bearing, the CV joints, the differential bearings and the pinion bearings are probably at risk of increased wear due to thrust forces that are not normal.
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This post is highly appreciated. It's erudite, well thought out, very sensible analysis and terrific detective work like Holmes piecing together clues and thoroughly answers all the OP's question some of which hadn't been tackled by anyone else thus far. For example, the real world question of hey folks it drives fine but what damage am I doing? I truly hope the scenario is just the trailing arm that's bent as the reply from DJPatemen suggests, and not the torsion tube. I'm troubled that the banana arm is such a different color than all the red clay residue on "everything else" but maybe it's because someone had the banana arm off the car thinking they'd get a replacement and significantly handled it with greasy hands and rags and couldn't find a replacement and then just reinstalled it.