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07-21-2011, 10:50 AM | #1 |
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Here's a short article, with press release, about Mercedes new M152 V8.
http://www.autoblog.com/2011/07/21/m...for-slk55-amg/ It makes 415hp, 398ft-lbs from 5.5L. Not overly impressive, no. But, aside from the fact that new naturally aspirated V8s themselves are becoming a rarity these days, the most interesting part is the cylinder deactivation and how it is implemented. At a basic level, this is just an M157 without the turbos. It will only be used in the SLK55, or so it seems right now. Presumably the next generation AMG C-class ("C63") will use the M157 like other AMGs, though conceivably they could use a higher output version of this new M152 instead. Redline RPM is 7200RPM just like the existing 6.2L M156 (which will soon go away for good, except in M159 form, in the SLS). Just thought this might be noteworthy here due to all the discussion of the next generation M3 and it's lack of V8. I found it interesting that Mercedes took this approach for an engine that will just be used in one car (if that really is the case...) and the cylinder deac is an innovative (though not unique) alternative to going with forced induction. |
07-21-2011, 10:59 AM | #2 |
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Im surprised to see them introducing a new v8 in a time where they are going to be extinct soon enough.... Im not impressed with the engine though.
Its great to see them keep trying instead of giving up on the big engine scene, thats something I can respect instead of selling out to turbos so soon. so for this, i give mb props.
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07-21-2011, 11:11 AM | #3 |
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See, I told you, next M3 will be V8 tripple turbo with 500HP and 10K RPM redline...Oh, and fying pink pigs are gonna reach 30,000feet.
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07-21-2011, 02:40 PM | #6 | |
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07-21-2011, 04:17 PM | #7 | ||||
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Quote:
Quote:
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We'll see, of course. Quote:
Cadillac first did this in the late '70s or early '80s, as I recall, but it was not nearly as refined as what is already available now. (Plus they had definite problems with the system). As with the Porsche twin-clutch gearbox of that era, the control systems available just weren't up to the job. Nowadays, computer power gets the job done properly. Bruce PS - I am pretty impressed with this engine (on paper, of course), but I am particularly impressed with how light the damned thing is. PPS - In theory, turning an eight into a four would tend to be less noticeable to the driver than turning a six into a three, so Mercedes may in fact be able to get away with more aggressive use of this technology than Honda could. Capiche? Last edited by bruce.augenstein@comcast.; 07-21-2011 at 04:36 PM.. |
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07-21-2011, 07:56 PM | #8 |
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You weren't too far off. Some of the current generation small block GM V8s do have cylinder deactivation. But not the ones used in the Corvette.
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07-22-2011, 09:39 AM | #9 |
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Thumbs up AMG. 2011 and still an new NA V8. It is really light, has more torque and nearlly same power as S65, could have more if it revved above 8.000 RPM. This engine should get modified by M GmbH and be put in to the next M3 F3X. Shame on BMW.
Last edited by BMW269; 07-22-2011 at 09:44 AM.. |
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07-22-2011, 09:55 AM | #10 |
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Levi, Your avatar says you are in Italy and drives Alfa-Romeo..Being an avid F1 follower I can't help but wonder if we are missing Renault (best engins and aerodynamics in F1 now) here in the USA. How is Renault performing in Europe? mainly in the NA performance cars sector. Any strong M3 competion from Renault side?
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07-22-2011, 09:57 AM | #11 | |
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07-22-2011, 10:03 AM | #12 |
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I just browsed online and it doesn't seem that Renault produce any performance cars...Reaaally surprised.. where does all there F1 technology go? what a waste!! Sorry for Hijacking the thread, I'll shut up now.
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07-22-2011, 11:18 AM | #13 |
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Just a quick reply to sameh as well, look at Citroen-Peugeot as well, champs in WRC-Grand Am and they don't have any high performance cars either. Also sorry for the highjack but not in a way, where does these manufacturers' R&D go to if not their commercial lineup?
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08-31-2011, 07:40 AM | #14 | |
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Just thought I'd add to this thread rather than starting a new one.
Audi just announced some details of their new 4L TFSI V8, and they too, are using cylinder deactivation. Quote:
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08-31-2011, 09:13 AM | #15 |
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Renault do produce performance cars here in Europe but they are small hatchbacks with 200 -270 or so hp. Developed by Renaultsport these cars are well sorted drivers cars and relatively cheap. Look up the clio cup 200 and megane RS.
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08-31-2011, 09:42 AM | #16 |
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According to an Autoblog article a while ago, BMW commits the highest percentage of its revenue to R&D out of all other makes, tying with Honda.
EDIT: Found it. http://www.autoblog.com/2011/08/15/v...andd-spending/
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08-31-2011, 10:29 AM | #17 | |
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08-31-2011, 11:32 AM | #18 | |
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My 08 suburban has cylinder de activation. Other than an indicator on the cluster showing 4 or 8 One cannot feel the changeover. If I maintain below 65mph and the road is flat, it stays on 4 cyl mode longer, now i know it not a high hp engine. I swear i get close to 30mpg but I cant drive that slow. |
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