Anyone think the sedan might get this new engine as well?

http://www.leftlanenews.com/more-det...***-coupe.html

 

There's already the 63. They would have to introduce new 4-door models in the line-up with the new engine; Then it would somewhat alter the current theme of the C-Class sedans (more performance-oriented, unless that's the intention). With the Coupe, the C-Class line is finally complete. It'll be even more successful with a more rounded line-up.

Well, the girlfriend will like it when I deliver the news to her! We've been holding off with any purchase decisions until more details are released on the coupe. Thanks for the heads up.

 

I’m game on a twin turbo V6 any day!!! Bring on the boost!!!!!

 

No doubt the Twin Turbo V6 is intriguing, but I still prefer NA.

 

Any word on whether the 3.5L V6 or Twin Turbo V6 will be the higher-end engine producing more power?

 

I'm sure the twin snail V6 would be the more powerful with 300 horses.

 

Any word if I can retrofit the twin turbo onto my 350

 

Anything is possible if you have the funs$$$$$$$$! A few things to remember, the space you need to fit the turbo’s in the engine compartment, the internal of our engine are they strong to withhold the added pressure that you will be putting in it, you would also need a stand alone computer. But if you have the funs by all mean go ahead it would be nice to see one.

 

This engine most likely means the death of the 350. BMW has gone the same route in hopes of meeting the cafe regulations that will be coming into effect in the near future. BMW has even dropped the V12 thats been a staple in their lineup for years, so its only a matter of time before the rest of the brands have to start retooling their engine lineups as well.

 

CAFE standards apply only to the fleet average. If Mercedes needs to improve it's overall MPG average, it can simply introduce the A or B class into the US market, not to mention they've recently added the S Hybrid drive, and have an EV vehicle heading into production.

 

We are going to have to see how MB package the turbo set up. The 272 twin cam heads eat up space. We've been looking at TC'ing a 203 350 and there is just no space so the guy is going rear turbo which I don't like. He's just doing a bolt on job max 6psi boost with standard high 10.7 compression ratio. None of this is ideal but it will give him what he wants.

I prefer close mount turbo's with intercooler & proper control - LC pistons etc. I don't like methanol injection either. This is one application where I'm terrified of knock - esp high speed knock.

 

Not quite that simple...the number of cars sold is taken into account so the manufacturers can't simple make a few crappy little three cylinder cars that no one buys and keep selling the gas hogs in large numbers.

 

Mercedes has also been paying penalties because they haven't been meeting CAFE standards.

 

Do you think tweaking the 2.5L version to a slightly higher displacement and tacking on the turbos would do the trick?

 

Its cheaper to drop an engine from the lineup and add a new one than it is to try to introduce a new model to a lineup. The A or B class as you suggested would have to be tested and pass all the government hoops. Add to that there is no market at all for an A or B class in the United States (or at least not enough to warrant the cost of introduction) and many dealers would reject the idea of carrying the model all together (see Smart car).

Also keep in mind that the current 350 engine is used in the C, E, E Coupe, SLK, GLK, CLK, ML, and R just in the States alone. Replacing it with a engine that achieves the same performance but gains in miles per gallon would work wonders for their lineup in terms of meeting the cafe standards and finally put them into BMW territory in terms of performance.

 

Are you talking about Benz doing this or aftermarket? For Benz to do would be an easy step. It's a strong engine that revs easily. A few forged parts & you could sqeeze fair hp & torque out of it with twin turbos. Not so easy aftermarket where the only easy way to increase capacity is a longer throw crank.

 

Yep that's what I meant. I mean the 2.5L is part of the m272 family (E25 version) and even if they cranked up displacement to 2.8L I believe it would still be possible to package the turbos into the engine bay.

I drove a 2007 C-Class with that engine and I have to say that with 201hp and 181lbs Torque it was a pretty decent engine - it was zippy enough and got great mileage. The turbos would of course take care of the torque deficiency and add some horsepower. Whether or not they would significantly impact fuel economy remains to be seen though.

 

Yep - we are on the same page. I think it would make a magic TC unit. I don't even think it would need a capacity change to push some serious horsepower. I love little 6's they are smooth & rev like hell.

 

Oh definitely and considering its already a running engine in their lineup they wouldn't incur much cost in bringing it back to market (specifically back to the US). The likelihood of them doing that though...well I dunno.

The thing which bugs me about turbos though (apart from the fact that you lose that NA sound and part of the feelin) is whether or not they are reliable long-term and i've read that they significantly reduce the life of the engine, which i'm not too happy to hear.

 

Yes - The modern ball bearing turbos are pretty reliable with some driver education on not shutting the engine down while turbos are still spinning at insane RPM. With strengthened parts & modern electronic contol, engine durability can be pretty substantial. Most diesels today are TCed. Nevertheless - the harder an engine works the greater the wear. They won't last as long as a larger capacity unstressed engine. I think TC's are part of our more frugal automotive future though.