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"POS Cobra" Restoration Journal
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Motorsports "POS" Mustang Cobra Restoration Journal|
|#40: April 23rd, 2011 - Repairing the Drivers-side Lower A-Pillar...|
I knew that the lower A-pillar had been repaired in '97. I could see the weld from the inside of the car. However I did not know how bad the repairs were until I removed the door.
In the pictures below, you can see the gray area below the hinge mount. That is the primer that I exposed after sanding off the paint to try and find out why there was a crack leaking up from the hole on the lower edge. It was at this point I realized that there was a layer of body filler that had cracked. As I started to remove the filler, the extent of the poor repair became evident. There was over 3/4 of an inch of filler on the area and the metal underneath was all beat-up.
I took one of the pictures of the lower a-pillar and drew a box on it using MS Paint. I then e-mailed it to Action Auto Salvage in Okeechobee, who was able to cut the part I needed from a junked Mustang. Cost $50
I started by trimming away the parts of the rocker and a-pillar that I didn't need. This got me close to a part that I could work with. Plus I now had a "3-D diagram" for how to remove the part from the POS.
Excuse the small pictures above. I accidently over-wrote the large versions. Anyway, you can see that I used a cut-off wheel and body saw to remove the damaged metal from the POS. I ground off the lower plug welds but left the door opening seam attached at this point.
Pictures are now back to normal. Here I have taken the new part and removed the outer skin from the inner structure by drilling out the spot welds. Next I began cleaning up the surfaces for test fitting and final trimming of the opening.
I ended up going up higher on the a-pillar, as I wanted to get to sound metal. This put the new seam up into the hinge reinforcement area of the a-pillar, which is two layers of metal. That's OK by me. Less chance of burn-thorough when welding.
After multiple times of grinding, trimming and fitting, I was happy with the gaps and fitments of the new panel and coated all the parts with weld-thru primer. Next I began to tack-weld it into place.
After the welding was done on the outside, I went to the inside of the car and ran a bead on the hinge reinforcement area to ensure good weld penetration. Not the prettiest weld, as it was hard to keep the MIG tip at a good angle in the confined area.
A coat of acid-etch primer and it's ready for filler. Not much will be needed this time.
Here is a 'before and after' comparison picture.
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Last Modified: April 23rd, 2011.