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#1
02-10-2011, 10:05 PM
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Exhaust just fell off
So while sitting at a stop light, in my '85 TD, I hear a thunk and the exhaust gets loud. Light turns green and I can hear part of the exhaust dragging the street.
I know exhaust basics, but that's it. It broke at the "joint" next to the transmission. I had to pull over and yank the 4 rubber thingys that hold the entire exhaust on.. then threw the ass'y in the car to get home, it barley fit. So what is that joint called? What size do I need? Can I even weld that stuff with my little mig welder, with it possibly being SS? The rest of the exhaust seems like it's in ok shape. That turbo pipe might be rusty, it was dark out. PS. I don't know how anyone runs a 617 w/o a muffler. This thing is way too loud for me. But it did accelerate faster.
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D 
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#2
02-10-2011, 10:10 PM
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Your MIG can weld it up no problem.
If it is SS then no, you cannot weld it, but I doubt it is because it probably wouldn't have failed. SS requires TIG or stick.
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I don't know the same things that you don't know. Shayne 85 W126 SD OM617.951 87 409D 650S OM617.913 93 E34 Touring M50B25TU 02 E46 Sport M54B30TU 
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#3
02-10-2011, 10:47 PM
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Yep my muffler fell off some years ago. Now i'm using a straight pipe, no complaints
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1982 300GD Carmine Red (DB3535) Cabriolet Parting Out 1990 300SEL Smoke Silver (Parting out) 1991 350SDL Blackberry Metallic (481)  "The thing is Bob, its not that I'm lazy...its that I just don't care."
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#4
02-10-2011, 10:51 PM
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Mine fell off last fall then again last week. Same spot! lol I am looking for a system from manifolds back. Sigh.
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1991 560 SEL / 185k miles 1992 750il / 17k miles - project car
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#5
02-11-2011, 12:02 AM
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My bro's exhaust is just about done on his 300D, it has been ghetto repaired twice and a few weeks ago another piece fell off.
 I'm fixing it real-deal, its getting a brand new center section and MB rear muffler on Saturday, full stock system, a thing of beauty!! It wasn't easy finding the rear pot, just about everywhere is out of stock....I managed to find a genuine MB one for a pretty good price.  Personally I run a straight pipe.....
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-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#6
02-11-2011, 12:09 AM
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Quote:
So I should buy the pipe from the turbo? Down pipe is it?
__________________
08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D
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#7
02-11-2011, 12:14 AM
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My muffler fell off about a year ago, I just went to a small local muffler shop and they fabricated one up for me. About a hundred bucks and it does the job just fine.
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 1984 300D, 228k, Light Ivory, Java MB-Tex
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#8
02-11-2011, 12:20 AM
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Looks like that pipe from the turbo is called a "front pipe" and the price is not listed. I wonder how many millions it is. I know I can buy a flex joint pretty cheap, perhaps I can duplicate that front pipe.
I guess it would be pretty easy to make a new pipe exit mid ship... like in front of the rear wheel. I know someone one here has a pic of an SD with the pipe sticking out of the hood . I don't think I would be caught dead driving anything like that.Perhaps a trip to the muffler shop is the best idea, considering the weather and all.
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D
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#9
02-11-2011, 01:25 AM
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Quote:
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#11
02-11-2011, 12:48 PM
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Quote:
Quote:
You can absolutely mig Stainless steel. I have attached stainless exhaust components to mild steel for years using a MIG. Optimally, you need to use TIG, but in this case MIG is a perfect solution IF you have stainless. (obviously if it is all mild steel, then MIG is the perfect solution) I might also suggest that if you have a MIG machine, go ahead and weld in a section of pipe if that is what it needs. Dont doubt your ability, remember your were born with feet and at some point couldnt walk.  I plan to straight pipe one of my Benzs.
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85 300D 3 pedal. Current project. 83 300TD (need rear wiper assembly dead or alive) 84 300SD Daily driver 85 300TD almost 400k miles and driven daily. 98 E300D *sold 86 300SDL *sold and made flawless 10 hour journey to new home. 
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#12
02-11-2011, 05:12 PM
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I had it happen once in the mountains in the twisties... Good times.
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42
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#13
02-12-2011, 12:05 AM
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Mine fell off going down I-55 while a 98, or newer, Turbo Diesel was passing me and we were waving at eachother, i hurd a thud and then scrapping noises... I was 150 Miles away from Chicago/home. Luckly a state troop came by and helped me tie my exhaust up to drive home... It just had the entire exhaust replaced 3 days before hand. except they didn't replace the down pipe right next to the trans and that's where it broke. so another 150$ and for 650, have a walker system.
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1983 Euro 240D 277K 2016 Mazda 6 Coming Soon, 2013 Mercedes E350 Bluetec Formers: 2012- Mazda 3 2007 Outlander- complete pile 1995 E300 Diesel 208K 2007 VW Passat 2.0T  63K SOLD2003 Jaguar X-type 3.0 Sport Sold 04/11 w/88K 2009 Lexus RX350 9061 miles. Sold 04/09 2008 Mitsubishi Lancer GTS:Totaled Sept.,09 @ 24,000 2003 Infiniti I35 58K Sold 1984 300 turbo diesel 222K
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#14
02-12-2011, 02:46 PM
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I finally looked at it a little today. The flange/joint broke on the down pipe side, the rest of the exhaust is good.
I have three options, in my opinion: 1. Buy a new down pipe  ($$$)2. Try to rig/weld a new flange to the old down pipe  (cheap)3. Steal the good down pipe off my SD  (makes SD loud and unsellable)I guess a fourth option is to weld the two pieces together and just omit the flange/joint altogether. I don't like that idea since it may cause stress fractures(kinda doubt it with the flex joint aft of turbo) and it would make transmission removal a problem. Transmission is acting a little funny, so it's on my mind.
__________________
08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D
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#15
02-12-2011, 03:09 PM
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Ashedd, those rotten old pipes are almost impossible to repair. repair it and 6 weeks from now it will fall off. This fall there was a 300D Turbo at the pick and pull on/off I70 on the east side of town. Got to be one or two by now on the west side also. Down pipe in $123.00 new as I see it one the internet. Fast Lane is NIS, but is about $143.00. But I sure would try to pull one off a car at the P & P. P & P will probably charge you $15.00
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it!
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