In line engines have huge advantages for servicing by people like US...

Mercedes-Benz Inline-Six

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

i read about this a couple of years back glad its coming to fruition

Auto magazines are giddy that BMW went back to an inline-six after some years with a V-8. My 64 Valiant has a slant six, which I love. Many people fuss "wimpy six", but one slant guy ran <10 sec 1/4 mile, albeit after adding a turbo. The biggest drawback to an in-line six is the length. But, that does force a long-hood, giving a classic look, kind of anti-cab forward.

Interesting that M-B followed Chrysler's initial "quickie V-6" by chopping 2 cylinders off a V-8, keeping the same 90 deg V (shakes) in their "Magnum" V-6 (late 90's). Their later V-6's have a better ~60 deg V.

Re turbos, plumbing a single is easy in a straight six. I think they use duals because one is a small guy that spins up fast to avoid "turbo lag". Many new designs are doing that.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans

That slant six is one of the longest production line engines ever...along with the 318 v8 of the same era...... after being cancelled in cars it was still used in marine and industrial situations like forklifts...
For an inline engine... the fact that it was tilted to the side... really helped the hood line be more like non inline engine cars...

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

I don't know, I own 3 inline 6 engines from 2 different brands and they're all a pain in the ass to work on. I don't see what all the fuss is about.

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CENSORED due to not family friendly words

or couple days ago...

New MB engines including new straight 6's!

I know where one of those Pontiac slant 4 ones is, with a 326 head on it

Sounds like the 192" IH four popper in the Scouts... half the 392. They are odd looking if you have never seen one.

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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]

My Jetta's 2.5, 5 cyl is 1/2 of a Lamborghini V-10, I'm told.

VW can't lose it fast enough. Me either.

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62 220sb
67 250S
72 280SE 4.5
74 280C
77 300D
82 240D
85 190E 2.3
86 300E RIP 12/28/09
85 300SD
92 300D 2.5
00 E320 Current
Over 1,000,000 miles in Benzes, Since66

....and a whole passel of BMW 2002 and Tii

Modular engines are nothing new, adding and subtracting cylinders is a pretty old game.
I'm not sure that servicing an inline looks that easy when I gaze down into my new I-4 diesel though, where's the engine in there?

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Gone to the dark side

- Jeff

They haven't said whether they'd be transverse mounted or not. Doesn't matter what it is I4, I5, I6 or even I8, if they are mounted inline with the vehicle they are a breeze to work on. Transverse is a whole different jungle.

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Onus probandi incumbit ei qui dicit, non ei qui negat

I recondition w123/w126/w124/w140/r107/r129/ steering boxes!


1984 300D "Elsa" odo reset 6/2011 147k
1983 300TD "Mitzi" ~268k OM603 powered
1995 E300 "Adelheid" 262k [Sold]

Inline or not, theyre buried in harnesses, plumbing, accessories, etc. I pulled off the cover on my inline bluetec and cant see the turbos, the block, or the head.
Trying to meet emissions these days has these engines looking like a cat in a basket of yarn.

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Gone to the dark side

- Jeff

The OM642 is like that. But at least they made the wiring harness easy to unfasten and peel back and lay in the space between the block and the radiator. And many of the hoses have quick connect clamps that make it easy to remove. You can tell a good bit of thought went into the assembly to make it easy to take apart and put back together again.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech