The
550 Maranello is equipped with a 4-valve per cylinder 485-bhp 65° V12
which has a relatively flat torque curve from 3,000 rpm all the way up
to the red line. Maximum power is delivered at 7,000 rpm, while torque
peaks at 58 kgm (420 lbs/ft) at 5,000 rpm. The all-alloy engine weighs
235 kg (518 lbs) and features Ti6a14V titanium alloy con rods for reliable
high speed running which, in turn, have made it possible to lighten the
counter-weighting of the drive shaft, improving the engine's pick up and
innate balance. The forged aluminium alloy pistons have a particular crown
design to enhance the thermodynamic efficiency of the combustion chamber.
The V12 is also fitted with a variable geometry intake manifold and variable
back-pressure exhaust manifold. The latter helps increase torque under
part load and increase combustion efficiency at high revs. The 6-speed
gearbox is in unit with the rear limited slip differential ensuring a near
perfect weight distribution. Drive is transmitted from the clutch to the
gearbox by a driveshaft supported by three bearings and housed in a rigid
steel tube linking the engine and gearbox. |