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  #46  
Old 02-26-2013, 09:09 PM
Hatterasguy's Avatar
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Neat, would be a nice replacement for my truck if I can ever get away from needing it.

Would want something with more power for a fun car though.

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  #47  
Old 02-26-2013, 09:38 PM
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why does it have that stupid looking sport grill. I want a hood star damn it!

I have to spring for the luxo version.. Just offer one version!! Mercedes, your product line up is getting bloated just like BMW's.

And the hood... its too flat. Where are those curves and those beautiful lines that harken back to the early days of the W115-W123 hood.
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  #48  
Old 02-26-2013, 09:58 PM
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Quote:
Originally Posted by spdrun View Post
That and US govno-mint regulations. Hope the sequester hits the NHTSA swine very hard.
Dude, your username looks like "spud run" to me. As in, "Oh no! We're out of potatoes! Someone needs to go on a spud run!"

I love it.
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  #49  
Old 02-26-2013, 10:08 PM
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Quote:
Originally Posted by TheDon View Post
why does it have that stupid looking sport grill. I want a hood star damn it!

I have to spring for the luxo version.. Just offer one version!! Mercedes, your product line up is getting bloated just like BMW's.

And the hood... its too flat. Where are those curves and those beautiful lines that harken back to the early days of the W115-W123 hood.
Not a fan of that sport grill at all. The hood star and grill will definalty need to be in attendence for future owners. It may even be an option as well? We need to wait and see when it becomes available for build on mbusa.
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  #50  
Old 02-26-2013, 10:37 PM
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Quote:
Originally Posted by spdrun View Post
That and US govno-mint regulations. Hope the sequester hits the NHTSA swine very hard.
"Govna" LOLOL I see what you did there.


It means "feces" in Russian.
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  #51  
Old 02-26-2013, 10:42 PM
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Wow that looks remarkably like the BMW 1 series from the back, classy though. I like the interior shots that have leaked so far, very clean and functional.
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  #52  
Old 02-26-2013, 11:11 PM
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Quote:
Originally Posted by Skid Row Joe View Post
THX - for the additional input. The CDIs have a lower rear-end number, is one reason perhaps why the I6 CDIs get such outstanding mpg.

Just amazing to read TylerH and Tim Freeh's testimony on that CDI from Texas that Tyler sold here on FS forum last /October/November. The future '06's brake system replacement/jeopardy is the singular item that let me set my sights on an '08/'09 Bluetec.....
I should not have sold that car. It would have paid for itself in fuel savings given how much I drive in a few years.
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  #53  
Old 02-27-2013, 10:41 AM
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Quote:
Originally Posted by iwrock View Post
My $.02, after spending some seat time in both.

Get a CDI, not a bluetech.

The CDI doesnt have urea injection or cats. Gets better fuel mileage, and has a better/stronger lower end. You will be happier in the long run with a more proven engine/transmission, and less maintenance headaches.
Justin - the '07-'09 w211 Bluetec does not have urea injection. That started on the w212 sedans in (I think) 2010. That's when diesels again appeared in California emissions states.

The CDI does have an oxydation catalyst. The w211 Bluetec has both the catalyst and a diesel particulate filter (DPF). I think you perhaps meant to slam the DPF.

My brother owns an '06 CDI and I have an '08 Bluetec. From behind the wheel there really isn't much difference. Both cars have huge midrange torque and a decent amount of turbo lag. The om642 Bluetec engine actually specs out at a higher peak torque and the 722.9 transmission in the Bluetec has a much wider spread of gear ranges than the 722.6 in the CDI. In the end they both get the job done in fine fashion.
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  #54  
Old 02-27-2013, 02:58 PM
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Quote:
Originally Posted by TylerH860 View Post
I should not have sold that car. It would have paid for itself in fuel savings given how much I drive in a few years.
That's a great point. I'm so cheap, the loss of mpg I will suffer driving a Bluetec sedan, versus an early CDI sedan is hard to accept. Low miles CDIs are just not showing-up as often as low-miles Bluetecs in the places (on-line) I've been looking for one. As I related to you in previous discussion - low-miles to me are not 15K a year.


Quote:
Originally Posted by jcyuhn View Post
Justin - the '07-'09 w211 Bluetec does not have urea injection. That started on the w212 sedans in (I think) 2010. That's when diesels again appeared in California emissions states.

The CDI does have an oxydation catalyst. The w211 Bluetec has both the catalyst and a diesel particulate filter (DPF). I think you perhaps meant to slam the DPF.

My brother owns an '06 CDI and I have an '08 Bluetec. From behind the wheel there really isn't much difference. Both cars have huge midrange torque and a decent amount of turbo lag. The om642 Bluetec engine actually specs out at a higher peak torque and the 722.9 transmission in the Bluetec has a much wider spread of gear ranges than the 722.6 in the CDI. In the end they both get the job done in fine fashion.
A lot of this ^^^ is what I have thought that I have come to know about their (CDI/Bluetec) differences.

The MB sales brochure I picked-up from an MB dealership in late 2004,
RE: 2005 E320 CDI, reflects the CDI as having 201 hp @ 4,200 rpm, and 369 ft. lbs. torque @ 1,800 - 2,600 rpm. Which would be sufficient for my needs.


.

Last edited by Skid Row Joe; 02-27-2013 at 07:40 PM.
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  #55  
Old 02-27-2013, 03:43 PM
t walgamuth's Avatar
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I like the sport grill. Had one in the 500SEC and always loved it.
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  #56  
Old 02-27-2013, 07:48 PM
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Exclamation RE: Chicken foot IN-THE-GRILLE......

In my humble Mercedes-Benz non-gas owner opinion, I have always carried a strong belief that the trademark 3 pointed star, only belongs in the model grilles of exclusively S-Class models; 380/450/500/550/560/600 - SEC/CL/SL & S Class MBs!


The cheezy (IMO) grille-kits that started showing-up in 4-door C-Class MBs, in the late '90s, to me were so cheapening of the awesome tri-star trademark symbol that said; "This is a powerful, S-Class V8 from Mercedes-Benz." A 4-cylinder C-Class sedan, is not all that to get excited about 13 years ago.

That is all......

Last edited by Skid Row Joe; 02-28-2013 at 12:00 AM.
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  #57  
Old 02-27-2013, 08:05 PM
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Pre 1990 Mercedes have REAL bumpers, not plastic "please hit me so the local body shop can make a lot of $$$$ bumpers". They also don't have a sh** load of computers to go out to the tune of big $$$$$$. I would rather have an older mercedes and go completely through it replacing all the rubber components than deal with the new plastic bumpered over-priced computerized trouble machines. The local transmission shop guy told me that if someone spills coffee down the shift console of a new mercedes it can cause an electrical problem. who needs it?
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  #58  
Old 02-27-2013, 08:10 PM
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Most pre-1990 US-market cars had "real" bumpers, since cars had to survive a 5 mph crash without significant damage. Some time around 1990, the law was changed to 2.5 mph.

Interestingly, the foreign versions of the same cars usually had much smaller bumpers.
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  #59  
Old 02-28-2013, 03:06 PM
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Quote:
Originally Posted by Skid Row Joe View Post
That's a great point. I'm so cheap, the loss of mpg I will suffer driving a Bluetec sedan, versus an early CDI sedan is hard to accept. Low miles CDIs are just not showing-up as often as low-miles Bluetecs in the places (on-line) I've been looking for one. As I related to you in previous discussion - low-miles to me are not 15K a year.
I have a theory why the CDI seems to generate better MPG numbers than the Bluetec. On the surface the Bluetec would appear likely to be better - it is smaller displacement (3.0 liters vs. 3.2) and has that ridiculous 722.9 overdrive (1800RPM @ 70MPH).

However, one of the strategies MB engineers use to control NoX emissions on the Bluetec is to reduce the compression ratio. It is very low for a diesel - 16.5:1. I can't seem to find the CR for the OM648, but would expect it to be at least 20:1, perhaps higher. A higher compression ratio extracts more mechnical work from a given quantity of air & fuel. Here's a quote I stole from Wikipedia:

Quote:
A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air-fuel mixture due to its higher thermal efficiency. This occurs because internal combustion engines are heat engines, and higher efficiency is created because higher compression ratios permit the same combustion temperature to be reached with less fuel, while giving a longer expansion cycle, creating more mechanical power output and lowering the exhaust temperature. It may be more helpful to think of it as an "expansion ratio", since more expansion reduces the temperature of the exhaust gases, and therefore the energy wasted to the atmosphere. Diesel engines actually have a higher peak combustion temperature than petrol engines but the greater expansion means they reject less heat in their cooler exhaust.
Here's a link to an article describing the OM642: http://www.rbmpartsnews.com/articles/Bluetec/

Just in case that burning issue was keeping anyone up at night.
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  #60  
Old 02-28-2013, 06:41 PM
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I am hoping that this thread will get shipped to: Diesel Discussion forum.....?

Going from memory, I seem to recall the MB 4-cylinder diesel cars my Mom and Dad bought new in the 1960s through the 1970s, stated their engine compression as 22 to 1.

I was a dealership (not just MB) brochure collector and specifications reading youngster and teenager in the 1960s/1970s.

Higher compression ratio == higher BTUs/efficiency, right? If that's true, then that would contribute to better/higher mpg.

I am still thinking that the low RPM - high torque range of the 3.2 liter / I6 / CDI, COUPLED with a low numerical rear end gear ratio, may also account for the outstanding E320 I6 CDI mpg. The I6 propels the CDI 0-60 in the 7-second range - so these are not slow cars off the line.

The 2005 E320 CDI (5) of them as I recall, were run at the speed of 145 +/- mph in a relay type of sequence around the clock at the Goodyear Tire Company test track facility located near Laredo, Texas to complete some sort of miles run endurance record/challenge in 2005 or 2006, by Mercedes-Benz Germany - so these are cars unmodified except for their engine governors, that achieve high speed too!

Brian Carlton could probably look at the numbers/specifications and help identify the differences in why the 3.2 Liter I6 CDI sedans produce such good mpg numbers - versus the 3.0 V6 Bluetec sedans.......?


Last edited by Skid Row Joe; 02-28-2013 at 08:18 PM.
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