| Alfa Romeo 690T engine | |
|---|---|
Giulia Quadrifoglio engine bay
| |
| Overview | |
| Manufacturer | Alfa Romeo |
| Designer | Gianluca Pivetti |
| Production | 2015–present |
| Layout | |
| Configuration | 90° V6 |
| Displacement | 2.9 L; 176.4 cu in (2,891 cc) |
| Cylinder bore | 86.5 mm |
| Piston stroke | 82.0 mm |
| Cylinder block material | Closed-deck Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC, 24-valve |
| Valvetrain drive system | Chain |
| Compression ratio | 9.3:1 |
| RPM range | |
| Max. engine speed | 7,400 rpm[1] |
| Combustion | |
| Turbocharger | Two single-scroll parallel turbochargers (IHI) with air-to-liquid intercooler |
| Fuel system | Port and direct injection |
| Management | 2× Bosch Motronic[2] |
| Fuel type | Petrol |
| Oil system | Wet sump with water heat exchanger[3] |
| Cooling system | Water-cooled |
| Output | |
| Power output | 375–397 kW (510–540 PS; 503–533 hp) |
| Torque output | 600 N⋅m (443 lb⋅ft) |
| Dimensions | |
| Dry weight | 218 kg (481 lb)[2] |
| Chronology | |
| Predecessor | Alfa Romeo JTS engine |
The Alfa Romeo 690T is a twin-turbocharged, direct injected, 90° V6 petrol engine designed and produced by Alfa Romeo since 2015.[4] It is used in the high-performance Giulia Quadrifoglio and Stelvio Quadrifoglio models and is manufactured at the Stellantis Termoli engine plant.[5]
The 690T is often considered to be the Ferrari F154 engine with two less cylinders, but in fact it is a completely new engine developed by the same engineer, Gianluca Pivetti, of the F154, that shares some peculiarities Alfa knew worked well and to reduce development time.[6]
This 2.9-litre V6 uses single-scroll rather than twin-scroll turbos, which produce 1.4 bars (20 psi) of boost pressure. Alfa also added mechanical cylinder deactivation to the right bank for increased highway fuel efficiency. The 90-degree V6 engine's crankshaft has three crankpins 120 degrees apart, each with two connecting rods mounted side by side. This configuration results in uneven firing at 90 and 150 degrees of each rotation, but for each cylinder bank results in even pulses every 240 degrees, providing evenly-spaced exhaust pulses to each turbocharger and allows one bank to deactivate.[2] Additionally, from 2020 onward, Alfa added port injection, doubling the number of injectors to 12.[1][7][8]
The Maserati 3.0-litre V6 Nettuno engine, introduced in the Maserati MC20, shares many of its characteristics with the Ferrari F154 and the Alfa Romeo 690T engines.[8][9]
In 2023 Alfa Romeo presented the 33 Stradale model that featured a bigger displacement 690T engine. Now at 3.0-litres and producing 456 kW (620 PS).[10]
| Eng. code | Displacement Bore x stroke |
Years | Usage | Peak power | Peak torque |
|---|---|---|---|---|---|
| 690T | 2,891.26 cc (176 cu in) 86.5 x 82 mm 481.877 cc (29 cu in) per cylinder |
2016–present[11] | Giulia Quadrifoglio | 510 PS (375 kW; 503 hp) at 6500 rpm | 600 N⋅m (443 lbf⋅ft) from 2500 to 5000 rpm |
| 2016–2024[12][13] | Giulia Quadrifoglio
Stelvio Quadrifoglio |
512 PS (377 kW; 505 hp) at 6500 rpm | |||
| 2019 | Giulia Quadrifoglio Racing Edition | 520 PS (382 kW; 513 hp) at 6500 rpm | |||
| 2023–present[14] | Giulia Quadrifoglio
Stelvio Quadrifoglio | ||||
| 2020 | Giulia GTA / GTAm | 540 PS (397 kW; 533 hp) at 6500 rpm |
