What exactly causes the dreaded body buckle when you mini tub? Just finishing mine and want to make shure I brace in the right place.
Body buckle?
- Thread starter gman415
- Start date
I would imagine it's the quarter panel, but don't know for sure because this is the first I've heard of it. There are two body mounts that are aft of the axle.
yes thats what I'm talking about .I have only seen one pic of a Regal that it happend to,but I'v herd of it on others, and didnn't want it to happen to mine.
I have seen it on a Nova, and was told it was because the guy did not tie the front sub frame to the rear unibody frame.
had this problem in my last malibu. the pas side quarter would suck in after a hard launch .the car was not mini tubed . but the rear pas side body bushing was shot i cut it out and instaled i nut and bolt with the body bushing in place.i pulled it to tight .
not so,only after a hard launch then id have to push it back out , there was never any body damage it would just suck in , so i wedged a 2x4 in there and problem fixed.. i do think it was from over tighting the mount.t5montecarlo said:
I do think that overtightening where the bushing was shot to begin with was at least partly responsible.
Doing so prestressed the quarter panel by pulling it too hard toward the frame, which I suspect caused the quarter's shape to "flatten" a little. Flatter panels will buckle before panels with more "shape" will, and apparently the stresses developed back there during a hard launch then caused the quarter to elastically buckle inward. Since it was a case of elastic buckling, it popped back out without difficulty or leaving creases. It's a case of the quarter panel shape not being as "stable" as it was previously. The 2 x 4 is only a band-aid; the best fix would be to rework that body mount with a new bushing.
Norm
Doing so prestressed the quarter panel by pulling it too hard toward the frame, which I suspect caused the quarter's shape to "flatten" a little. Flatter panels will buckle before panels with more "shape" will, and apparently the stresses developed back there during a hard launch then caused the quarter to elastically buckle inward. Since it was a case of elastic buckling, it popped back out without difficulty or leaving creases. It's a case of the quarter panel shape not being as "stable" as it was previously. The 2 x 4 is only a band-aid; the best fix would be to rework that body mount with a new bushing.
Norm
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