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  #1  
Old 12-22-2003, 06:58 PM
lietuviai's Avatar
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W116 and W123 how similar are they?

Although these cars look totally different from the inside and out, dimensionally I have noticed that they are very close and even weigh about the same. I have even seen that many parts are used from one model to the other including for the chassis and suspension.
They have even shared the same types of engines, diesel and gasoline.
I guess there are numerous forum members that own both cars and I was wondering what have they noticed about them that was the same and if there was anything worth noting.
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  #2  
Old 12-22-2003, 09:07 PM
Tim's__Benz
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psst, don't tell anyone, but w116 is better.
David
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  #3  
Old 12-22-2003, 10:03 PM
mb123mercedes
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Unfortunately not wagon version was
made.

Altough I think that a prototype was made
by a coach builder in England.
Didn't look good.

Louis.
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Old 12-23-2003, 05:02 AM
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With respect to suspension components, yes.... very similar ball joint arrangement on the 116 to the 123 - except with chunkier components, larger steering knuckles, etc.

Final drive ratios are wide and varied on the 116 too. Had myself a stickshift 280SEL last Summer and the final was 3.60..... but have heard of 116's with 2.7x (Autobahn) and 4.xx (American versioin V-8).

It's wide tracking and long legs that make the 116 an outrageous highway animal that eats up the pavement. For sure, its a job to keep em under 85 mph. The 116 clearly outhandled the 123..... but with wider gear ratios and gasoline engine, it just wasnt as much fun as my 240D hammer down paddling through the gears.
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Old 12-23-2003, 01:12 PM
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I got the idea that the cars were similar after flipping through an old copy of KBB. It showed that the W116 300SD and W123 300D turbo had the same wheelbase and nearly identical weights.
I've never seen the cars side by side though.
The thing I was hoping to hear was that if they had the same sized engine bays. If that was the case, I was thinking of someday of putting a Mercedes V-8 into a W123 chassis. A crazy idea I must admit but worth a thought.
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Old 12-23-2003, 01:32 PM
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I read a post on the W126 forum at www.mbworld.org and it says that there have been the following conversions, two W123 240Ds had a 380SEL Euro engine and a 560SEL Euro engine in them. V-8 gassers can be put in W123s.
-Joe
P.S. There was even a 500SEC with a 3.0L motor transplanted in it from a W126 300SD!!
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Old 12-23-2003, 02:59 PM
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liet,

I see you like GM products, so how about a 502 c.i. Big Block Chevy in a 123 ? Many of these cars have had small block conversions, but has anyone ever seen a B.B. in one ? Do I hear differentials popping and axles snapping ?!
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Old 12-23-2003, 08:00 PM
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Hey now there's an idea! A B.B. in a W123. Nah, nothing can break a MB diff. The sounds you're probably hearing are the discs in your spine popping as you hit the gas in a W123 with a B.B.
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Old 12-23-2003, 10:03 PM
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W109 axles won't put up with too many M100 hard launches.

Sixto
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Old 12-23-2003, 11:49 PM
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gimme a low-tech 240D
 
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And thats gotta be the truth for 123 axles too.... i got screwed on one bad ebay purchase partly on this account.

With respect to 4.5 from 116 going into the 123 it reminds me that 114/115's will NOT take the 4.5 conversion although both the 114/115 and 116 will swap 2.8 gasoline and 3.0 diesel engines easily.

LOL, i'd reaaalllly like to see that 240D with 3.8 V-8 they were braggin about in the www.mbworld.org forum - er, did they say anything about actually driving the car more than 20,000 miles..... or was it some bored rich kid's idea of freak conversion that anybody sane would never attempt on budget less than say $8,000, that would put a complete V-8 SL in the stable.
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Old 12-24-2003, 12:06 AM
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would a 107 take a 617.xxx or a m110 ?
it seems as all the v8s were stuffed in.

don
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  #12  
Old 12-24-2003, 12:28 AM
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Quote:
Originally posted by notlostmaybe
would a 107 take a 617.xxx or a m110 ?
it seems as all the v8s were stuffed in.

don
The R107 came with an M110 over seas. The 280SL.
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Old 12-24-2003, 04:17 AM
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Here in Portland, the large independent shop MBI Motors just completed a 123 300D that has a Chevy 350 V-8 motor in it. This was kind of a shop project on the whim of Sig Raethke, the shop owner, and the rest of the mechanics there.

There was quite a bit of custom fabrication of steering gear, transmission and engine mounts, and the engine carrier had to be cut and reversed then re-welded for the engine to fit well.

Just saw the car this afternoon. Looks like a very clean white W123 sedan, but has a mean bite of a sound to it. Badges still say 300D.

W123 toughness and durability, with the performance, cheapness of operation and toughness of the Chevy small-block V-8. Sounds like a fun combination to me.

Cheers,
Gerry
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  #14  
Old 12-24-2003, 08:50 AM
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Speaking of engine swaps, this could be interesting: V8 G Class
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  #15  
Old 12-26-2003, 01:27 PM
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Ok since this thread is dead anyway how about this question. How similiar is the 116 to the 126? While the 116 is a bit wider and a little longer is the interior larger than that of my 123?
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