Alfa Romeo 690T engine

Not to be confused with the 1996 Alfa Romeo 690 engine powering the Alfa Romeo 155 V6 TI.

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 Alfa Romeo Termoli engine plant.^[5]

Alfa Romeo 690T engine
Giulia Quadrifoglio engine bay
Overview
Manufacturer	Alfa Romeo
Designer	Gianluca Pivetti
Production	2015–present
Layout
Configuration	90° V6
Displacement	2.9–3.0 L; 176.4–182.6 cu in (2,891–2,992 cc)
Cylinder bore	86.5 mm (3.41 in)
Piston stroke	82.0 mm (3.23 in)
Cylinder block material	Closed-deck Aluminium with wet steel cylinder liners
Cylinder head material	Aluminium
Valvetrain	DOHC, 24-valve with continuous camshaft phasing[1]
Valvetrain drive system	Chains
Compression ratio	9.3:1
RPM range
Idle speed	950
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, variable-speed oil pump[3]
Cooling system	Water-cooled, low- and high-temperature systems each with main and additional radiators
Output
Power output	375–397 kW (510–540 PS; 503–533 hp) @ 6,500 rpm
Torque output	600 N⋅m (443 lb⋅ft) @ 2,500-5,400 rpm
Dimensions
Length	905 mm (35.6 in)
Width	860 mm (34 in)
Height	505 mm (19.9 in)
Dry weight	218 kg (481 lb)[2]
Chronology
Predecessor	Alfa Romeo JTS engine

Description

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. Specification similarities that Alfa knew worked well reduced the 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 characteristics with the Ferrari F154 and the Alfa Romeo 690T engines.^[8][9]

The new Alfa Romeo 33 Stradale features a larger 3.0-litre version of the 690T engine producing 456 kW (620 PS).^[10]

Applications

• Alfa Romeo Giulia Quadrifoglio
• Alfa Romeo Stelvio Quadrifoglio
• Alfa Romeo Giulia GTA and GTAm
• 2023 Alfa Romeo Giulia SWB Zagato
• Alfa Romeo 33 Stradale

Alfa Romeo

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 Stelvio 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 (North America)	512 PS (377 kW; 505 hp) at 6500 rpm
		2019	Giulia Quadrifoglio Racing Edition Stelvio Quadrifoglio Racing Edition	520 PS (382 kW; 513 hp) at 6500 rpm
		2023–present[14]	Giulia Quadrifoglio Stelvio Quadrifoglio (Europe, UK & China)
		2020	Giulia GTA / GTAm	540 PS (397 kW; 533 hp) at 6500 rpm
690T	2,992 cc (182.6 cu in) 88.0 × 82 mm 374.0 cc (22.8 cu in) per cylinder	2023-present	Alfa Romeo 33 Stradale (ICE variants)[15][16]	620 PS (456 kW; 612 hp) at 7,500 rpm	730 N·m (538 lb·ft) at 3,000 rpm