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  #1  
Old 05-05-2010, 11:13 AM
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126/603A design flaw

My poor wife was driving my car the other day and hit a parking curb. Of course the first thing to hit is the oil pan, hanging low and forward, forward even of the tires.

Anyway, it is now cracked, from the aft end of the previous repair (TIG'd on sheet patch), up around the corner, to the bottom of the first stiffening rib near the float switch.

Is there any hope of repairing this reliably? I have both MIG and TIG gear for aluminum, but dirty/oily cast is a bit of a nuisance, especially from underneath. JB weld? Those funky "brazing" rods that weld aluminum cans to pine?

I don't really have a day to R&R a new $500 pan. Gah!

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  #2  
Old 05-05-2010, 11:45 AM
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Talking

Several manufacturers use these cast aluminum pans. My '02 VW GTI had one and I had to drive off I-10 in Houston once. Thought both sides of the shoulder were not curbed.

Wrong.

I rubbed a quarter size hole in the pan. Emptied all the oil out in a parking lot. They loved me.

The 1.8L pan is much smaller than yours though, and not that expensive. VW later revised that pan with an aluminum/steel hybrid. That's one of the things I like about the OM617. Steel!

You could always find an AMG front spoiler and your wife could brake that first...
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  #3  
Old 05-06-2010, 02:00 AM
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Doh! 500.00 for an oil pan? Crazy. The vw one is like 60.00 or so after market. It much simpler and smaller than this one though but still -- 100.00 or 150.00 aftermarket would be more reasonable, maybe even 200.00 looking at the thing. Its darn big. Hopefully you can find a used one.
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Old 05-06-2010, 02:21 AM
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I know the pain. Cracked mine on a speed bump a few years back. Finally found one in a junkyard to put back on. Scraped it but didn't crack it two weeks ago and about had a heart attack. I don't know *WHY* they built the stupid thing so low.
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  #5  
Old 05-06-2010, 02:52 AM
mike905eh
 
Join Date: Jul 2009
Location: B.C. Canada eh!
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My Nephew years ago had an old 190D and he did a similar trick to his oil pan. He called and I went to fix it in the parking lot of the Mall. I used JB weld and washed and scrubed it real well with a degreaser and a nail brush The hole was about a quarter size with a crack about 3 inches along the seem. As he left the oil all over the parking lot I put kitty litter on it.
I let it sit over night came back in the morning and put new oil in it and he drove it for 3 years after that until he was rear ended and it was written off. It made an ugly mess and trying to smooth it with water made things better as it dried. So I would give it a try....and watch your pan every now and againfor staining. just my 2 cents
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Old 05-06-2010, 02:52 AM
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A junk yard one is your best bet. TIG is never that good on cast alloy. By the time you get rid of any porosity the sump will probably be warped.
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  #7  
Old 05-06-2010, 07:00 AM
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I'd replace it and not try to repair it. Then have a skid plate made and installed.

The W124 is better in that regard because the sway bar is in front of the pan. And the 616/617 are tough with their steel pans.

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