Lamborghini Murciélago LP640

The LP640 is an evolution of the bat, with modifications to the engine, transmission, suspension, outside of the body and the inside. The name of this version is taken from the motor position (posterior longitudinal, as in all the bat) and the horsepower figure, rounded to zero (640). At least for now, only available with the coupe bodywork.

The new engine really gives 641 hp (471 kW). With this engine, the LP 640 accelerates from 0 to 100 km / h in 3.4 s and reaches 322 km / h, the data is better acceleration than top speed. A Mercedes-Benz SLR McLaren, which gives 626 hp and weighs 1768 kg, it takes 3.8 s in the measurement of acceleration, but reaches 334 km / h, a Porsche Carrera GT (612 hp and 1,455 kg), accelerates in 3 , 9, and reaches 330 km / h.

The power increase is due to several causes: a cylinder that goes from 6192 to 6496 cm ³; increase the diameter and the race. Another is that the engine can spin faster, gives maximum power at 8,000 rpm instead of 7,500. Another plus is that the compression ratio goes from 10.7 to 11.0.

With these modifications, the specific power is higher now, 98.7 hp / l instead of 93.5, is a high specific power output for a naturally aspirated engine.

Maximum torque is now 660 Nm and gives it to 6,000 rpm. Despite the increase in compression ratio, the mean pressure has fallen relative to normal engine Bat: 12.8 bar against 13,2. A mean pressure remains high, few pass naturally aspirated engines of 13.0 bar (the Porsche 911 Carrera S, 13.1).

The engine of this version is basically the same as in the other, a V12 to 60 degrees, with aluminum block and heads, inlets variables (VACS) and variable valve timing on intake and exhaust. The intake manifold is different and the oil cooler, bigger. Lamborghini has also changed the engine electronic control and control the CAN network.

Also as in other models, the transmission is complete, with one front axle automatically connect through a viscous device. You can have manual or automatic, the latter with a system to make departures from standstill Lamborghini called 'Thrust'. Lamborghini has adapted exchange relations, the group and transmission shafts to the engine characteristics.

The changes mainly affect chassis springs and dampers, tailored to the greater weight of the car, as in other bats, are double rear spring and shock absorbers have an electronically controlled variable system.

The tires are 245/35 front and 335/30 rear tires' Hermera "of 8.5 x 18 and 13 x 18. Lamborghini offers the option to specific tires for Pirelli P Zero Corsa circuit and, soon, also winter tires Pirelli P Sottozero.

The rear brakes are the same as in the normal Bat (ventilated discs measuring 355 x 32 m) taller than the front: 380 x 34 mm. There is an option even greater ceramic brakes (380 x 36 mm) with six-piston calipers.

The external changes are mostly aerodynamic body: the shape of the front spoiler, mirrors, wipers, front air tickets (the right is almost closed) and a rear diffuser. There are decorative changes, like how pilots. There is an option that is transparent engine hood.

The seats are different, more enveloping as Lamborghini and a built-in headrest. The upholstery and interior panels are also different, and also change the font things like instrumentation, lighting or sound equipment.