Torsion Bar front mount broken! - Impala Tech
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post #1 of 2 (permalink) Old 12-06-2008, 10:40 PM Thread Starter
Join Date: Aug 2008
Location: Miamisburg, Oh.
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Torsion Bar front mount broken!

I found something very odd (to me) on my Ebay Calico Impala.

If you've never looked at it, the front of the torsion bar mounts in a frame cross-member using 3 bolts.
The front part had busted CLEAN THROUGH the sub-frame! The metal of the cross-member was still bolted tightly to the torsion bar too!

I hate that I didn't get a "before" picture, but here's the finished product after a few hours work. What you can't see is that we cleaned up the 4"x3" broken piece of the busted out cross-member (and cleaned the area), put a V-edge on it, and welded it back in place.

The picture is of an 'overlay' that we made to further support the area, it's just metal stock from Lowes - $10. We added some welding on the opposite side also.
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BA. is offline  
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post #2 of 2 (permalink) Old 12-07-2008, 07:06 AM
Join Date: Jan 2006
Posts: 12,381
The upper links on the rear end are in tension. Are your bushings any good? They are usually cut in half when the suspension is loaded that hard.

I did the same thing to my right rear mount the first time I pulled a wheelie with my Impala. I had to shut down as the car pulled hard right when it let go. I was able to drive it home but it was noisy and twitchy with only one link keeping the rear end from moving side to side (there is no Panhard bar on a factory diagonal four link).

Big Dave
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