Has anyone run into any problems with fit-up of ANSA replacement exhaust pipes? Reason for question: How and where I get pipes installed will depend on whether welding is needed.

A friend said he twice found the middle section was short or interfered and had to have an extra piece welded in. This was on wagons, I believe.

I have an 85 sedan. Front pipe ME4541 installed, new ANSA mid ME4545 and rear muffler 5947 sections on their way.

Rok and ANSA say these are correct for 85 300D, but MB part numbers are different. Should be:
1234901720 Front
1234908315 Mid
1234908415 Rear

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

Graham,

Search on Ansa's Mercedes part #'s to backward check compatibility, I think they will work. Yes the short center section was probably due to a station wagon.

Good luck!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

Thanks. I have been trying to check the numbers.

For that middle section, I get ANSA ME4545. But also get MB numbers 1234905615, 6115 and 8315.

For the rear section, ANSA 5947, I get 1234906015 and 8415.

Parts are almost here, so we may only find out how they fit once old ones are removed. I will have to get shop to do install, just in case welding or other fit up is needed (that I can't do at home)

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

ANSA front pipe was installed a week or so ago. I posted about a small problem, because the new pipe flex section has a large diameter woven wire cover. The originals had a smaller corrugated expansion joint with no cover. The new one is a tight fit and may be touching on transmission side.

We pulled the old mid and rear sections out in one piece.

Assembled the new pipes with clamp loose and put in place. Loosely bolted to front pipe (using new seal). Then tried to manipulate/rotate pipes so they did not touch chassis. There are a number of bad spots where the new section can make contact. After getting everything as good as we could, went for a drive and at times there was a fairly loud low frequency vibration.

Up on lift again, and found contact with transmission support just behind the flange pipe joint where pipe is larger in diameter.

Used one new smaller rubber ring at front of muffler to better pull muffler sideways, a crowbar, various positions for the flange clamps - they can rotate, and bolts at 3/9 o'clock worked best. Finally got about 3/16 clearance on the bracket. New motor mounts may mean engine and therefore front pipe flange is sitting higher.

Seems OK now, but was more work than it should have been.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

It's always harder than you think it should be, such is exhaust works .

These days I have a buddy who owns a muffler shop make me custom exhausts when I need them, I usually delete either the muffler or resonator to give me a nice mellow sound .

Welded systems last the longest, never, EVER trust anyone else to do exhaust works unless you're right there watching .

? Did you buy the R107 rubber hangers ? they have tiny bicycle chains inside and never break / wear out .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

This OE system has one flanged joint at front and one slip-on clamped joint between the middle and rear sections. Otherwise everything is pre-welded. Pretty solid actually.

Looking at the system while up on lift, I figured I could have just had a pipe fabbed running straight from front pipe to the rear muffler. There are several extra jogs just to accommodate the center muffler that could be eliminated. I hope to never have to do this again, but would do that if there was a next time. Car makes a lot of noise regardless!

The hangers on my car were probably put on by a Mercedes dealer when I had the entire exhaust replaced 22 years ago! I don't recall changing them (but may have). They are the type below and are still good. The one I replaced was just a new CRP donut - used it because it was shorter and could pull the exhaust to one side better.

The install is actually very straight forward. It is just the way they designed it with too many tight spots, that caused a small problem.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

Which ones are you speaking of? Very interesting!

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

One thing that came to mind. We put in new motor mounts and springs before doing exhaust. Motor mounts, at least, would have put engine higher, so perhaps the front pipe flange at bottom is closer to the underside. And as a result, so is the exhaust pipe.

There is a clamp at bottom of front pipe that connects to the chassis. Maybe in time that could be loosened off to allow the exhaust to hang slightly lower?

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

I buy them from the M-B Classic Center, I'm sure I have the correct P/M buried some where in my files .

I looked OnLine and don't see it : https://www.pelicanparts.com/catalog/SuperCat/16308/MBZ_16308_EXHMIS_pg1.htm#item2

I know it's also available off brand, I know a guy in Pasadena who uses them in his indie muffler shop .

The thing is : they cannot break and so drop your exhaust like the plain rubber rings do occasionally .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

I checked the R107 part number - they just use the basic donuts. Having an internal spring or chain would be a help when the donuts break!

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

Driving today, I had noise and vibration when making very slow right turn. Engine probably vibrates more at low rpm. No problem with normal driving except I get a clunk over some bumps.

I took wheels off, checked for any other possible problems like bearings. Sprayed silicone over all joints. No change.

Don't really know what can be done to correct. The exhaust is just too close to chassis in places and the larger diameter expansion joint no doubt also makes contact.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

I checked the R107 part number - they just use the basic donuts. Having an internal spring or chain would be a help when the donuts break!

No, they don't .

Try the correct factory ones, you'll see .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Hi guys,

Here's the chain-reinforced exhaust hanger part number: 1074920044

Four for the OP's W123 300D.

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1983 300D Midnight Blue
4 speed, W115 intake mani, non-EGR exhaust mani, KKK K26, 3 pc Euro bumpers, Lo-spec Euro headlights, AL129X, hubcaps, custom A/C

1987 300TD Smoke Silver
Euro headlights, thermostat relocation, coolant bypass mod, rebuilt Becker + Jehnert + Helix audio, OEM Oris roof boxes and surfboard racks, Euro towbar

1983 300TD Reed (Moss) Green / Dark Olive MB Tex Euro spec

1983 300TD Silver Blue / Blue cloth Euro spec, OM648 and 722.6, 15" hubcaps, W126 S2 brakes

The correct factory hanger for 107 SLs (1972-1985), is 1074920082 (donuts). This according to MB EPC. When I enter 1074920044, it says it is for some 107s, - just 86-89 560SL in NA.

You are richer than I am - those hangers cost about $27 each from MB!

This site says they don't fit the W123. That is an aftermarket one which is a LOT less expensive. They may just not "officially" fit Wonder if the cheap knock-offs have the chain?

All academic for me - I have the type on my W123 that I posted a pic of earlier . My 107, has the usual "factory correct" donuts

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

The last set I bought were $8 each .

Yes, they fit *perfectly* and once you've had the exhaust system fall and drag & get damaged or ruined you'll forget the $27 each aspect, that _IS_ too much, go look up and buy the aftermarket ones now that you have the part # .

Amazon, E-Bay, Google etc....

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better