The M840T Engine
The heart of the 750S is a masterpiece of mechanical engineering: the 4.0-liter twin-turbo V8 engine,
code M840T.
- Architecture: Unlike traditional American engines, this V8 uses a
flat-plane crankshaft. This configuration allows the engine to rev more freely and reach higher RPMs, in
addition to producing a characteristic high-frequency sound.
- Forced Induction: Two twin-scroll turbochargers. The twin-scroll technology
divides the exhaust pulses entering the turbine, reducing backpressure and improving low-end response
(reducing turbo lag).
- Lubrication: Dry sump. Instead of storing oil at the base of the engine,
the oil is pumped from an external reservoir, allowing the engine to be mounted in a lower position
(reducing the center of gravity).
- Power and Torque: 750 PS at 7,500 rpm and 800 Nm at 5,500 rpm.
Exhaust System and Transmission
One of the most striking visual and auditory changes is the new central exhaust system, inspired by
the P1. Made of stainless steel, it is 2.2 kg lighter and was tuned to emphasize the engine's even harmonic
orders, creating a cleaner and higher-pitched sound.
The 7-speed sequential transmission (SSG) has a 15% shorter final drive ratio. This theoretically
sacrifices top speed, but drastically improves acceleration in all gears and throttle response.
Obsession with Weight: The 30 Kg Diet
The backbone of the car is an extremely rigid carbon fiber "tub" (Monocage II on the Coupé and II-S
on the Spider). Compared to the 720S, the 750S is 30 kg lighter, thanks to new carbon seats,
"ultra-lightweight" forged wheels (saving 13.8 kg of unsprung mass), a lighter instrument panel, and thinner
glass. The dry weight of the Coupé reaches an impressive 1,277 kg.