User:Epensock/sandbox

Epensock / Sandbox

Engine and transmission
The Roma is powered by the award winning Ferrari type 154 engine. It is a 3.9 liter (3855 cc), turbocharged, 90 degree V-8, dual overhead cam (DOHC) design. The type 154BH is rated at 620 PS (456 kW; 612 hp) between 5,750 and 7,500 rpm and 761 N⋅m (561 lb⋅ft) of torque between 3,000 and 5,750 rpm.

The forced induction air intake system uses twin parallel water cooled turbochargers and two air-to-air intercoolers. The dry sump lubrication system helps prevent oil starvation during high g-force operation.

The engine is mated to the new 8-speed dual-clutch F1 transmission shared with the SF90 Stradale. The transaxle is equipped with an electronic differential and a mechanical reverse gear which contrasts to the SF90’s electric motor reverse. This design weighs 6 kg (13 lb) less than the 7-speed unit used in the Portofino and is claimed to provide quicker and smoother shifting. Much of the weight savings is due to the dry sump design and the primary alloy oil case that is compact and wrapped tightly around the various engine components. The Roma’s gear box defines the car’s character as much as the twin-turbo V8.

Suspension
The double wishbone, coil spring design with anti-roll bars also has an optional Magneride dynamic shock absorber system that provides more compact and controlled vehicle operation. The Magneride system uses magnetorheological dampers.

Electronics
The Roma comes standard with Ferrari's F1-Trac traction control, side-slip control 6.0 technology, electronic stability control (ESC), Launch Control, and Ferrari Dynamic Enhancer. It also has a five position Manettino dial on the steering wheel allowing selection of the vehicle’s driving mode. Some driver assistance systems like front and rear radar with adaptive cruise control are also available to aid during long drives.

Weight
The Roma was engineered to weigh 200 kg (440 lb) less than the Portofino while being based on the same platform. This was achieved through a more rigid body structure and the overall use of lighter parts. With the lightweight components, the car's dry weight is 1,472 kg (3,245 lb). Its curb weight (without driver) is 1570 kg (3,460 lb).

The published weight distribution is 50% front to 50% rear. . Ferrari claims that 70 percent of the parts used on the Roma are new as compared to the Portofino.

Aerodynamics
The dynamic rear wing self activates at high speed to help the vehicle generate downforce. The wing’s three positions are low drag (at 100 kph), medium downforce, and high downforce. The maximum deployment is rated at 95kg (209 lbs) of downforce at 250kph (155 mph). The rear spoiler is complemented by a pair of underbody vortex generators that create ground effect and manage the wake of the front wheels to ensure efficient load management.

Wheels, tires and brakes
20 inch cast aluminum wheels are standard with 20 inch forged alloy wheels as an option. The tires used on the Roma measure 285/35 ZR20s at the rear and 245/35 ZR20s at the front. The model was introduced with a choice of Pirelli, Michelin, or Bridgestone. Bridgestone run-flat tires could also be fitted to the car. The Roma has 390mm front and 360mm rear carbon-ceramic ventilated disc brakes. The Ferrari Dynamic Enhancer controls yaw angle by actuating the individual brake calipers of the car, a first for a Ferrari GT model.

Exhaust system
A redesigned exhaust system uses particulate filters (similar to diesel particulate filters) for emissions regulation. This was achieved by removing the silencers (mufflers) and adding bypass valves. It has been engineered to retain, enhance and expand the engine’s exhaust notes while reducing particle emissions.

Performance
The Roma’s published top speed is 320 km/h (199 mph). Performance figures include a 0-100 km/h (62 mph) acceleration time of 3.4 seconds; and 0-200 km/h (124 mph) acceleration time of 9.3 seconds. The Roma’s dry weight to power ratio is a best in class 2.37 kg/cv (5.3 lb/hp).

Miscellaneous
The Roma comes with 12-cubic feet of boot space in the trunk and additional storage space behind the two front seats. An option of foldable back seat backrests expands the storage configuration.