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  #1  
Old 05-06-2012, 10:39 PM
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M116/W126 Exhaust Manifolds

I would like to have pictures, drawings, or verifiable descriptions of US SPEC '81-'83 380 SE/SEL (W126) exhaust manifolds. I have an old aftermarket exhaust parts catalog that indicates the possibility of rear exit logs with the crossover pipe being under the trans. Although there is much talk on various forums about "Euro" manifolds, I have yet to see any information (especially pics) of the earliest US M116/W126 manifolds.

Any info on this matter would be appreciated.

Frank

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  #2  
Old 05-07-2012, 09:05 AM
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Exhaust manifolds:
  • up to 08.1981 (116.961/117.961):




  • from 09.1981 (standart-version (LHD and RHD) and AUS-/J-/S-versions):





  • J-/USA-versions from 1981 and CH-version from 09.1983 (CH-version with EGR):
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M116/W126 Exhaust Manifolds-.961-up-08.1981-type-126.jpg   M116/W126 Exhaust Manifolds-.963-09.1981-type-126.jpg   M116/W126 Exhaust Manifolds-up-08.1981.jpg   M116/W126 Exhaust Manifolds-09.1981.jpg   M116/W126 Exhaust Manifolds-j-usa-1981-ch-03.1983.jpg  

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  #3  
Old 05-07-2012, 04:05 PM
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Thanks much "Dr. S"; those drawings and pics do tend to confirm the common wisdom that dual outlet configurations were supplied only outside the US.
Frank
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Old 05-07-2012, 05:16 PM
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Mufflers and tubes.
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  #5  
Old 05-08-2012, 12:32 AM
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Euro dual logs are around if you look around and ask. I picked up the set for my M117 5.6L for $100. Judging by how pathetic the factory exhaust is on the US M116 3.8L (and the M117 5.0L), I would expect a large jump in power with a full dual system.

I would grab the muffler and resonator section off a second generation car, 420/560. Install the true dual manifolds with downpipes, and hook it all together. Running a cat is up to you, if you are exempt skip it. If you need one, Magnaflow makes a nice dual 2" in and dual 2" out with an integral O2 bung... they are about $100 last I looked.

Do not forget you can scrap your OE cats for large money currently and would probably offset the cost of the retrofit big time. This is my plan with my 560, but to retain the OE cat until exempt.
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'87 300SDL 251k
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Old 05-08-2012, 09:43 AM
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Quote:
Originally Posted by Hit Man X View Post
Euro dual logs are around if you look around and ask. I picked up the set for my M117 5.6L for $100. Judging by how pathetic the factory exhaust is on the US M116 3.8L (and the M117 5.0L), I would expect a large jump in power with a full dual system.

I would grab the muffler and resonator section off a second generation car, 420/560. Install the true dual manifolds with downpipes, and hook it all together. Running a cat is up to you, if you are exempt skip it. If you need one, Magnaflow makes a nice dual 2" in and dual 2" out with an integral O2 bung... they are about $100 last I looked.

Do not forget you can scrap your OE cats for large money currently and would probably offset the cost of the retrofit big time. This is my plan with my 560, but to retain the OE cat until exempt.
I just diuscovered that the entire exhaust system of my 91 350SDL needs to be replaced.

This was made very clear when 1/3 of it fell off on the freeway!

So.....where's a good place to buy it?

I have not yet called phil, but the indie who does work for me on exhausts says he can't get the system.

Any suggestions?

I still have to call Phil but the West Coast is still sleeping now.

Looking yesterday, when I thought I just needed a resonator at the back, PeachParts offered that, I checked before I called my indie and drove the car over.

Would like to get back on the road soon.
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1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6

Last edited by strelnik; 05-08-2012 at 03:23 PM.
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Old 05-08-2012, 03:23 PM
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Originally Posted by strelnik View Post
I just diuscovered that the entire exhaust system of my 91 350SDL needs to be replaced.

This was made very clear when 1/3 of it fell off on the freeway!

So.....where's a good place to buy it?

I have not yet called phil, but the indie who does work for me on exhausts says he can't get the system.

Any suggestions?

I still have to call Phil but the West Coast is still sleeping now.

Looking yesterday, when I thought I just needed a resonator at the back, PeachParts offered that, I checked before I called my indie and drove the car over.

Would like to get back on the road soon.
Post-script: Phil is still digging.
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Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6
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  #8  
Old 05-08-2012, 04:27 PM
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? Relevancy

What is the relationship of failed diesel exhaust components to
M116 manifolds? Why are the two preceeding post in this thread?
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  #9  
Old 05-09-2012, 10:03 PM
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Quote:
Originally Posted by Frank Reiner View Post
What is the relationship of failed diesel exhaust components to
M116 manifolds? Why are the two preceeding post in this thread?


No clue, hopefully my post helps.
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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
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  #10  
Old 05-09-2012, 10:45 PM
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I just scrapped the original cats a couple weeks ago off my 420, the original pre-cat and full main cat, only got $152 for them at the local recycler....The replacement system was $262 or so, so it did offset a lot of it, but certainly not all. I noticed a considerable improvement in both sound and power with the single large pipe + small flow through cat setup vs. the original. As the car can hit 90-100mph on a freeway onramp, I am not complaining!

Also I went the legal and earth friendly(er) route and used a cat. Not using one is just irresponsible.

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