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  #1  
Old 10-16-2011, 04:54 PM
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Join Date: Aug 2010
Posts: 135
Exhaust system advice please

We are restoring my son's 1967 230S. While stripping the body for placement on the rottiserie, I discovered the entire exhaust system was shot.
After some searching, I find that the parts are not readily available after market. I'm not preping the car for the concourse, just want a reliable fun car for the boy to drive off to college in. So, it doesn't need to be OEM correct, just functional,..if the OEM parts are not out there , or the parts are waaaaay too expensive, I can certainly settle for an alternative. Perhaps even a custom job, with a muffler that fits (roughly) in the space provided.
Any advice,...

My part #s are as follows: 108 490 08 20 (engine pipe) 111 491 46 01 (muffler) and 110 490 12 21 (center pipe)

Thanks to all for the help you've all given on this project.
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Jackson
Rockford, Michigan

1985 500SE gray market
1982 Porsche 928
1985 Mercedes 300CD X 2
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  #2  
Old 10-18-2011, 11:26 AM
Brian Ostosh
 
Join Date: Mar 2007
Location: San Diego
Posts: 504
I have used "Anza" brand for W108, W111 complete

I do not know where you can get those where you are.
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  #3  
Old 10-18-2011, 12:21 PM
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Posts: 135
muffler

Thanks Brian. I'll look them up.
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Jackson
Rockford, Michigan

1985 500SE gray market
1982 Porsche 928
1985 Mercedes 300CD X 2
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  #4  
Old 10-20-2011, 07:13 AM
JimFreeh's Avatar
Benz addict
 
Join Date: Mar 2007
Location: Hampton Roads, Virginia
Posts: 3,339
1. Be wary of installing just "any" resonator and muffler.

MB specific parts seem to have a certain resonance tuning, that gets upset when one or the other is replaced with non-standard item.

That said, back in the seventies my Dad, had a muffler shop fab a custom exhaust for Mom's 69 300SEL 6.3. It consisted of a pair of glass packs subbed into the system in place of the original mufflers, for a total of 4. No resonant frequencies, quiet inside, and just the right amount of burble outside to let people know that this wasn't your standard inline six MB....

2. Timevalve.

While not cheap, they will sound and fit as original.
Some don't care for them, but the one on my 280SL still sounds great and is in good condition 6 years later.

3. Get creative.

What other series had your engine?

Perhaps those parts are available and can be modified to fit your finback.
Maybe the early W108 chassis, 250S, would work.

When I had to replace my 71 250C exhaust, I wanted a dual system like the coupes had when new. Those went out of stock decades ago, and only the single outlet 250 sedan system remained on the books. I used NOS W108 280S (pipes, muffler and resonator) pieces, and the results turned out great with a bit of custom work.

Good luck,

Jim
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  #5  
Old 10-20-2011, 12:26 PM
Squiggle Dog's Avatar
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Location: Surprise, AZ, USA
Posts: 3,439
If you bought the complete exhaust system from Mercedes, it would cost between $800-900 unless you get a discount. I wonder if the sponsors of this site could get the parts for less money.
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  #6  
Old 10-20-2011, 01:14 PM
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Join Date: Dec 2009
Location: Northwest Ohio
Posts: 605
FYI I just went through this while replacing the downpipe on my 230. The Classic Center told me that it was NLA from them. I ended up with a stainless steel pipe from Timevalve. $260 .

Sometimes you just do what you have to do.

P.S. I was told that the pipe for the 230S is the same as the one for the 230.
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  #7  
Old 10-20-2011, 11:46 PM
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I do hope you will share your 230S restoration photos with us .
Thanks
Ad
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  #8  
Old 10-21-2011, 10:52 AM
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Thanks

Quote:
Originally Posted by Adler View Post
I do hope you will share your 230S restoration photos with us .
Thanks
Ad
Thanks for the advice everyone. I value your help on this project. The down pipe is the real sticking point here. This system is so simple, I could probably fab the bulk (everything behind the "down pipe") of the system myself. I have the original pipe, so I know what the flange dimension are and given enough time, I could probably fab the down pipe as well.
I did find the "timevalve" web site and consider this my only other alternative for stock fit and replacement.
I just missed a new stock down pipe on ebay ($45.00) recently,...man,...that would have been nice!
I will ad photos of my restoration. Should I post them on this thread?
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Rockford, Michigan

1985 500SE gray market
1982 Porsche 928
1985 Mercedes 300CD X 2
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  #9  
Old 10-26-2011, 01:08 AM
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Join Date: Aug 2011
Posts: 21
I just installed a full Timevalve stainless system in my '67 230S last weekend.

It went in very well and the fit up around the exhaust manifold was really great. No chance my local exhaust shop could have pulled that off. Also, the guys at Timevalve built it from 300SE-spec tubing which is slightly larger... saved me the hassle of going the dual exhaust route and might give me an extra 0.75 horsepower.

100% positive results.

Randy
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  #10  
Old 03-09-2016, 04:19 PM
hoofhearted
 
Join Date: Aug 2014
Location: Los Angeles
Posts: 86
replace middle muffler with bottle resonators

Hey JimFreeh,
I have a 280se 4.5 and my exhaust is due for replacement. (I've got holes all over my muffler)
I know thereís a lot more to modernizing an exhaust system than just slapping on performance mufflers. Iíve been trying to do research on the subject. My goal is get a similar effect to what you did with your familyís 300sel 6.3. I want it to be as quiet as possible when cruising at speed but still have that deep low end V8 burble. Iíve read up on H pipes as well as listened to some comparison videos. H pipe seems to reduce rasp and higher frequencies. Iím thinking of placing an h pipe somewhere along the downtubes and then feeding that to two bottle resonators and then on to a replacement 2 in 2 out quiet muffler. Can I get your thoughts or advice?

Thanks!


Quote:
Originally Posted by JimFreeh View Post
1. Be wary of installing just "any" resonator and muffler.

MB specific parts seem to have a certain resonance tuning, that gets upset when one or the other is replaced with non-standard item.

That said, back in the seventies my Dad, had a muffler shop fab a custom exhaust for Mom's 69 300SEL 6.3. It consisted of a pair of glass packs subbed into the system in place of the original mufflers, for a total of 4. No resonant frequencies, quiet inside, and just the right amount of burble outside to let people know that this wasn't your standard inline six MB....

2. Timevalve.

While not cheap, they will sound and fit as original.
Some don't care for them, but the one on my 280SL still sounds great and is in good condition 6 years later.

3. Get creative.

What other series had your engine?

Perhaps those parts are available and can be modified to fit your finback.
Maybe the early W108 chassis, 250S, would work.

When I had to replace my 71 250C exhaust, I wanted a dual system like the coupes had when new. Those went out of stock decades ago, and only the single outlet 250 sedan system remained on the books. I used NOS W108 280S (pipes, muffler and resonator) pieces, and the results turned out great with a bit of custom work.

Good luck,

Jim
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  #11  
Old 03-09-2016, 09:45 PM
hoofhearted
 
Join Date: Aug 2014
Location: Los Angeles
Posts: 86
also i remember that my 450SL is quite a bit quieter at freeway speeds. I know its comparing apples to oranges. but same engine BUT i did notice that the 450sl has a Crossover (h pipe) on the downtubes. and the 280se 4.5 doesnt.


Quote:
Originally Posted by nicknack280 View Post
Hey JimFreeh,
I have a 280se 4.5 and my exhaust is due for replacement. (I've got holes all over my muffler)
I know thereís a lot more to modernizing an exhaust system than just slapping on performance mufflers. Iíve been trying to do research on the subject. My goal is get a similar effect to what you did with your familyís 300sel 6.3. I want it to be as quiet as possible when cruising at speed but still have that deep low end V8 burble. Iíve read up on H pipes as well as listened to some comparison videos. H pipe seems to reduce rasp and higher frequencies. Iím thinking of placing an h pipe somewhere along the downtubes and then feeding that to two bottle resonators and then on to a replacement 2 in 2 out quiet muffler. Can I get your thoughts or advice?

Thanks!
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