SLK55 AMG new V8 engine

Wondermike

Wondermike

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Staff member
Always been a fan of the AMG cars, 'specially the SLK :sweetheart:

Hmm - 422bhp, 400 lb ft, 28mpg, 199g CO2, and it runs as a four cylinder in normal driving. And exhaust valves too.

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The cylinder shut-off function is available over a wide engine speed range from 800 to 3600 rpm if the driver has selected transmission mode "C" - Controlled Efficiency. The AMG main menu in the instrument cluster informs the driver whether cylinder shut-off is active, and whether the engine is currently running in four or eight-cylinder mode. No less than 230 newton metres of torque is still available in four-cylinder mode – enough power to ensure plenty of acceleration in most driving situations. As soon as the driver has a need for more power and leaves the partial load range, cylinders two, three, five and eight are activated. The switch from four to eight-cylinder operation is immediate and imperceptible, leading to no loss of occupant comfort whatever. At an engine speed of 3600 rpm the activation process takes no more than 30 milliseconds.
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Each of the two rear silencers has a flap which is variably activated on a logic-controlled basis depending on the driver's power requirement and the engine speed. At low loads and engine speeds below 2000 rpm the flaps remain closed. This causes the exhaust gases to cover a longer distance and flow through an additional damping element, so that the engine sound is pleasantly subdued and irritating frequencies are effectively suppressed – resulting in a harmonious sound impression especially in four-cylinder operation when cylinder shut-off is active. When the driver accelerates, the flaps open at an angle of 15, then 30 and up to 50 degrees so that some of the exhaust gases cover the longer, acoustically dampened distance and some the shorter distance. This produces a sonorous engine note. Under full load at higher engine speeds, in performance-oriented eight-cylinder operation, both flaps are fully opened so that the occupants are able to enjoy the decidedly muscular sound typical of an AMG V8. In short, they are left in no doubt about the performance potential of the 310 kW (422 hp) naturally aspirated AMG eight‑cylinder engine.
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http://www.carmagazine.co.uk/News/S...-News/Mercedes-confirms-SLK55-AMGs-new-55-V8/
 
Ok we all know that this engine will be great performance wise.. But wow what a great efficiency. It is slightly worse than 3.0 si engines which are already pretty economical.
 
Wouldnt mind one! Bet it's a sweet drive, AMG has been cranking out some excellent cars lately.
 
I was very tempted by the last SLK55... only thing which put me off was the auto box, and the poor mpg... as they could be had for around the £21-£22k mark last year when i was looking for my Z.

This looks much better... might have to wait a few years till it drops in price though.
 
Love V8's
:cry: I've had 2 BMW V8's one 3.5 (real sweet) and one 4.4 (torque meister)

They are awsome those big capacity engines. Off 120mph to 165 there is not much that will catch you (including most 911's). But the petrol consumption on cam is just scarry (£500 return to Bordeaux)...

When you look at these old beautifull 250 GTO, they had V12 3.0L engines! so cool.
 
Hell YEAH!

Give me a few years and I'll buy one secondhand - only way I'd be able to justify one :cry:
 
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