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#1
03-22-2010, 01:35 AM
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6.9L M100 Engine Identification
So I'm going to look at a SLC locally. One owner car. Yadda yadda. But apparently it comes with a 6.9L pulled from a low mileage 450SEL wreck years ago. Not sure why he is including it, since the SLC is nowhere close to needing a new engine. And you'd have to be certifiably insane to squeeze that sucker in there and make it work. Guess it's just cool to keep around or something. It's supposed to be complete though. Always stored indoors.
How can I easily tell it's a 6.9L and not just your run of the mill 450SEL engine? What it's worth (ballpark) to someone looking for a core/transplant? It's just gonna cost me extra to transport it and store it. But I will if it's worth it. Or I'll just tell him to keep his junk, because it won't fit in my trunk. 
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http://i193.photobucket.com/albums/z...-RESIZED-1.jpg 1991 300E - 212K and rising fast... 
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#2
03-22-2010, 02:10 AM
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Go to the M100 forum and advertise it. I'd imagine it would be worth a grand or two.
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1985 500SL Euro w/ AMG bits 130k  1984 300SD Turbodiesel 192k  1980 240D Stick China 188k  2001 CLK55 AMG 101k  2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!! 
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#3
03-22-2010, 08:27 AM
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a 6.9 doesn't have a real oil pan, just a very small sump underneath. The real oil tank is in the fender.
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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12 1982 380SL 1978 450 SEL 6.9 euro restoration at 63% and climbing 1987 300 D 2005 CDI European Delivery 2006 CDI Handed down to daughter 2007 GL CDI. Wifes 
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#5
03-22-2010, 07:37 PM
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There is nowhere to fill the oil on either valve cover. It would be considerably larger then any M117 engine that you'll see.
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With best regards Al
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#6
03-23-2010, 03:48 AM
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Yeah. So it was just a regular old 450SEL V8. No 6.9. Damn. That would have paid for the SLC I was looking at twice over. I guess one can dream....
But whoever pulled this engine years ago did mark it "6.9L 450SEL",a cruel joke perhaps. Especially since the guy who was selling this SLC truly thought he had a 6.9 in his garage.
__________________
http://i193.photobucket.com/albums/z...-RESIZED-1.jpg 1991 300E - 212K and rising fast...
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#7
03-27-2010, 12:33 PM
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Of course, the dead giveaway would be the "117" engine number stamped into the block.
On both motors, the engine number is stamped into the ledge of block behind the cylinder head on the motor's left. An M100 will start with 100. The 3.5, 3.8 and 4.2 motors all start with 116. The 4.5, 5.0 and 5.6 are the 117 motors. -CTH
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