The Alfa Romeo 690 engine is a custom-built, production-based, high-revving, prototype, four-stroke, 2.5-liter, naturally aspirated, V6 racing engine, designed, developed and produced by Alfa Romeo, purpose-built for the 1996 ITC season. It was loosely based on the PRV engine, used in the Lancia Thema 6v.[1][2]

Alfa Romeo 690 engine
Overview
ManufacturerAlfa Romeo
Also called690RC
Production1996
Layout
ConfigurationNaturally aspirated 90° V6
Displacement2.5 L (153 cu in)
Cylinder bore88–91 mm (3.5–3.6 in)
Piston stroke63–68.3 mm (2.48–2.69 in)
Valvetrain24-valve, DOHC, four-valves per cylinder
Compression ratio12.5:1
Combustion
Fuel systemFuel injection
Oil systemDry sump
Output
Power output483–500 hp (360–373 kW) @ 11,900 rpm
Torque output220 lb⋅ft (298 N⋅m) @ 8000 rpm
Dimensions
Dry weight85–89 kg (187–196 lb)

Applications

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References

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  1. ^ Boretti, Alberto A. (October 23, 2009). "Design of the 690 and 420 Touring Car Racing Engines". SAE Technical Paper Series. Vol. 1. doi:10.4271/2009-01-1683 – via www.sae.org.
  2. ^ Quiniou, Louis (February 8, 2017). "#TouringCarMadness, 1996, Alfa Corse misses it for good…".
  3. ^ "Alfa Romeo 155 2.5 V6 TI". www.fcaheritage.com.
  4. ^ "1996 Alfa Romeo 155 V6 TI ITC | Milan". RM Sotheby's.
  5. ^ Collins, Peter (September 3, 2012). Alfa Romeo 155/156/147 Competition Touring Cars: The Development and Racing History. Veloce Publishing Ltd. ISBN 9781845843427 – via Google Books.
  6. ^ D, Nick (April 1, 2016). "1996 Alfa Romeo 155 V6 TI | Alfa Romeo".
  7. ^ "Alfa Romeo 155 V6 TI DTM". 30 September 2020. Retrieved 9 December 2022.