The racing 911 is powered by a tuned version of the 3.8 litre flat - six engine from the Carrera S. Here, the dry
sump lubricated direct injection unit pushes out 475 hp through the use of a new GT3 - specific crankshaft, valve gear, titanium connecting rods and forged pistons for a 75 hp jump over the Carrera S.
The only difference is that the GT's engine is a dry
sump lubricated unit, while the C63's are wet sump.
But here's what you can't have on the Audi: a choice of two biturbo dry -
sump lubricated engines; Porsche Active Suspension Management (standard on the Turbo) and an optional, height - adjustable air suspension; a rear - biased all - wheel - drive system that can quickly divert up to 100 percent of torque to either axle via a multiplate electronic clutch; and available ceramic composite brakes and Porsche Torque Vectoring, the latter distributing rear twist from side to side.
Not exact matches
The manual transmission has a dry -
sump design to keep oil
lubricating the cogs under hard driving, the engine receives an extra radiator compared to the M235i, and the dual - clutch transmission employs its own oil cooler.
In both cylinder head designs, oil is pumped up from the
sump and onto valve springs and camshaft journals to keep valve train components cool and
lubricated.
The car uses a modified Maserati platform and powertrain (Maserati 4200, GranTurismo) and features a Ferrari / Maserati derived 90 - degree cross-plane [14] wet
sump [15]
lubricated 4.7 - litre V8 assembled by Ferrari.