Two 928's Welded Together...
11-13-2012, 09:40 PM
#1
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Two 928's Welded Together...
First time I've ever seen this. The 1986.5 in my garage seemed like a pretty straight car when I bought it. When I started to tear it down I couldn't understand why the factory over spray under the rear carpets was red while the factory over spray behind the front fenders is gold. I assumed someone did a very thorough repaint at some point and went through a lot of trouble to remove parts that are rarely removed during even the most complete paint job. But, I brushed it off until this weekend when I was under the car and solved the mystery... someone actually welded two different 928's together just behind the front seats. I've never seen a repair quite this extensive before. I have to assume that this was done years ago when the car was worth more because this type of repair is illogical for a car worth a few grand. But yes, an 1986.5 that was probably hit so hard in the rear that the repair required a new clip to be graphed on from behind the rear seats back. Oddly, the title says nothing of the sort... buyer beware. Looks like this particular 928 ended up with the right Rennlister, not sure this car is even safe - not the best welds that I've ever seen.
11-13-2012, 10:10 PM
#4
I've got two customers who have cars like this and both have clear titles. Thing is, if you didn't look really damn close you would never know they were wrecked. Very nice cars. Don't let it bother you.
11-13-2012, 10:29 PM
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Too bad that whoever did it, shouldn't be allowed to use a welder. That "globbed" on weld looks like it was done with an oxygen/acetylene outfit and has very little penetration. No small wonder there's cracks forming.
If the rest of the car is really nice, you could probably buy a "tub" for very little money and transfer your pieces. Straight used 928s that have engine or transmission "grief" seem to be available, for very little money. A "flood" car would seem to be perfect for your needs.
If the rest of the car is really nice, you could probably buy a "tub" for very little money and transfer your pieces. Straight used 928s that have engine or transmission "grief" seem to be available, for very little money. A "flood" car would seem to be perfect for your needs.
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greg brown
714 879 9072
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Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
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11-14-2012, 12:12 AM
#9
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Wow! And that first pic is some pretty crappy welding.
Back in '80-'82 I quite often saw a way cool car in Hopkins, MN (western MPLS suburb). Wish I had gotten pictures. It was a '65 Impala (only year of "hump back") with the "middle removed". I never got to really examine it so not sure how they did it. It kind of looked like a 4 door with the rear seat/door section removed and the rear window/trunk section welded back on right behind the front seat. It was about the size of a Mustang. It didn't have good paint and you could see the weld and a band of surface rust right behind the front seat but man, was it cool looking.
Back in '80-'82 I quite often saw a way cool car in Hopkins, MN (western MPLS suburb). Wish I had gotten pictures. It was a '65 Impala (only year of "hump back") with the "middle removed". I never got to really examine it so not sure how they did it. It kind of looked like a 4 door with the rear seat/door section removed and the rear window/trunk section welded back on right behind the front seat. It was about the size of a Mustang. It didn't have good paint and you could see the weld and a band of surface rust right behind the front seat but man, was it cool looking.
11-14-2012, 08:11 AM
#12
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11-14-2012, 08:49 AM
#13
From what I can see from the first photo I would suggest that it was electric arc welding, as there is welding "spatter" evident.
The welding in itself is what is called "Cocky Sh.t" welding in the trade with very little penetration, as they were probably getting blow through due to the thin metal and lack of control of the welding arc. Once welding both edges was achieve extra deposition of welding material was applied in the hope of imparting strength, hence the globs.
If it was oxy-acetylene welding the welding would/should show more circular pooling in the form of semi arcs with minimum welding reinforcement above the level of the parent plate material, as better control of the weld pool could have been achieved with the correct selected nozzle size.
Today in cut and shut either MIG or TIG welding in used to give a smooth welded joint with full penetration.
I you were to keep the car and wanted to ensure full strength welding with full penetration I would have all exposed areas ground back and then TIG welded along the join to give a full penetration weld and full strength the to joint.
Tails 1990 928S4 Auto
The welding in itself is what is called "Cocky Sh.t" welding in the trade with very little penetration, as they were probably getting blow through due to the thin metal and lack of control of the welding arc. Once welding both edges was achieve extra deposition of welding material was applied in the hope of imparting strength, hence the globs.
If it was oxy-acetylene welding the welding would/should show more circular pooling in the form of semi arcs with minimum welding reinforcement above the level of the parent plate material, as better control of the weld pool could have been achieved with the correct selected nozzle size.
Today in cut and shut either MIG or TIG welding in used to give a smooth welded joint with full penetration.
I you were to keep the car and wanted to ensure full strength welding with full penetration I would have all exposed areas ground back and then TIG welded along the join to give a full penetration weld and full strength the to joint.
Tails 1990 928S4 Auto
