12 cylinders and 8 gear ratios, that’s what you get in the car above. I was almost thinking BMW had decided to axe its plans to introduce ZF’s new 8-speed auto when it didn’t appear in the Rolls-Royce 200EX Concept recently, but here it is now finally in the new BMW 760i and its long wheelbase 760Li counterpart!
Under the hood of the 760Li is a new 6.0 litre V12 engine featuring two turbochargers, which BMW now calls BMW TwinPower Turbo Technology. The 750Li already offers V12-like power levels thanks to its twin turbo V8 so its only natural that the 760Li has to take it one step higher.
Power outputs are 544 horses at 5,250rpm and a massive 750Nm of torque from as low as 1,500rpm all the way to 5,000rpm, making this the most torquey standard BMW engine out there now, but of course it loses out in terms of horsepower to the twin-turbo V8 in the X5 M and X6 M.
The 60-degree V12 motor has a bore and stroke of 89mm by 80mm, and a compression ratio of 10.0:1. Unlike the V8, this engine has the turbochargers on the “regular” position of outside the V-bank. It has iron-coated aluminium pistons, forged conrods and crank, and an all-aluminium block construction. The block uses a closed-deck structure which holds the cylinder head down onto the floor-plate of the crankcase with bolts.
The engine is mated to an exhaust system that handles the massive amount of exhaust gas produced by 2 turbos and 6 litres of displacement with the largest possible diameter for the exhaust pipes possible. BMW has also designed the system to be as straight as possible. There are flaps around the silencer that are electronically controlled by the ECU to produce the right sound according to driving conditions.
ZF supplies BMW with an 8-speed transmission for the new 760i, but despite an additional 2 gears, there are no negative effects on the size or weight of the transmission. Four simple gearsets and five gearshift elements form the 8 gears, and at any time only 2 clutches are open in each gear to reduce frictional losses. The 6th gear is a direct 1:1 gear, with the 7th and 8th being overdrive gears. The next generation of BMWs will also receive this new ZF gearbox.
You can identify this top of the line 7-Series by subtle touches such as an extra wide chrome lining for the already huge front kidney grilles, a V12 badge on the side, and an extra chrome bar between the exhaust pipes at the rear which mirror the one on the front bumper. Open the doors and you’ll be greeted with illuminated door entry trims with V12 badging. Look after the jump for a full hi-res gallery of the new V12 7-Series.
GALLERY: BMW 760i and 760Li V12 – Exterior
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GALLERY: BMW 760i and 760Li V12 – Interior
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GALLERY: BMW 6.0L TwinPower Turbo V12
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VIDEO: BMW 760Li Driving in Munich
VIDEO: BMW 760Li Driving Scenes
VIDEO: BMW 760Li Interior Shots while Driving
VIDEO: BMW 760Li Exterior Shots
VIDEO: BMW 760Li Interior Shots
VIDEO: BMW 760Li Rear-Seat Entertainment