Mercedes-Benz Indy V8 engine

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Ilmor 265-D (1994)[1]
Mercedes-Benz IC108 (1995-2000)
Overview
ManufacturerIlmor-Mercedes
Production1994-2000
Layout
Configuration72°-82°[2] V-8
Displacement2.65 L (161.7 cu in)
Cylinder bore91 mm (3.6 in)
Piston stroke50.9 mm (2.0 in)
Cylinder block materialAluminum
Cylinder head materialAluminum
Valvetrain16-valve to 32-valve, OHV/DOHC,[3] two-valves per cylinder to four-valves per cylinder
Compression ratio12.4:1
Combustion
TurbochargerGarrett single-turbo
Fuel systemElectronic fuel injection
Fuel typeMethanol
Oil systemDry sump
Cooling systemLiquid cooling
Output
Power output800–1,000 hp (597–746 kW)
Torque output345–540 lb⋅ft (468–732 N⋅m)
Dimensions
Dry weight95–123 kg (209–271 lb)[4]
Chronology
PredecessorMercedes-Benz 500I engine

The Mercedes-Benz Indy V8 engine, known as the Ilmor 265-D (1994),[5] and later the Mercedes-Benz IC108 (1995-2000), is a powerful, turbocharged, 2.65-liter, Indy car racing V-8 engine, specially designed, developed, and built by Ilmor, in partnership and collaboration with Mercedes-Benz, to compete in the CART series; between 1994 and 2000.

Background[edit]

The 265-D engine was introduced for the 1994 season, which replaced the 265-C, although some of the smaller teams still ran the "C" throughout 1994. Without badging support, the engines were referred to simply as the "Ilmor-C" and the "Ilmor-D". This engine was said to produce about 30 hp (22 kW) more than the Ford-Cosworth XB used at the time.[6]

In 1995, Mercedes-Benz became the badging manufacturer for the Ilmor Indy car engines. The engine continued to be a strong contender on the CART circuit. In 1996, the open-wheel "split" began between CART and the IRL. Ilmor primarily was a provider for CART-based teams, and did not provide engines for any full-time IRL teams. At the 1996 Indy 500, the Ilmor Mercedes-Benz D was used by Galles Racing, and finished second, the powerplant's one and only start in an IRL-sanctioned race. When the IRL switched to normally-aspirated engines for 1997, the 265s were no longer permitted in the IRL and the Indy 500, and from that point on raced in the CART series exclusively.

Applications[edit]

References[edit]

  1. ^ "8W - What? - Penske-Mercedes PC23 500i". 8w.forix.com.
  2. ^ "Review: 'Beast' Recalls Drama Of Designing Legendary Race Engine". EngineLabs. October 8, 2014.
  3. ^ "Unintended consequences: The backstory Of Indy's most remarkable engine". May 15, 2020.
  4. ^ "engine weights". www.gomog.com.
  5. ^ "Mercedes Indy Engine". Speedway Motors Museum of American Speed.
  6. ^ Bennett, Nigel (October 15, 2013). Inspired to Design: – F1 cars, Indycars & racing tyres: the autobiography of Nigel Bennett. Veloce Publishing Ltd. ISBN 9781845845360 – via Google Books.
  7. ^ "1994 Penske PC23 - Spec Sheet | The Dawn Treader Customer Portal". customers.dtperformanceltd.co.uk.
  8. ^ Bennett, Nigel (15 October 2013). Inspired to Design: – F1 cars, Indycars & racing tyres: the autobiography of Nigel Bennett. Veloce Publishing Ltd. ISBN 9781845845360. Retrieved 8 November 2021 – via Google Books.
  9. ^ Magazines, Hearst (8 June 1995). "Popular Mechanics". Hearst Magazines. Retrieved 8 November 2021 – via Google Books.
  10. ^ Bentley, Karen; Gluck, Jeff (4 June 2015). The Unsers. Infobase Learning. ISBN 9781438142678. Retrieved 8 November 2021 – via Google Books.
  11. ^ Magazines, Hearst (8 June 1996). "Popular Mechanics". Hearst Magazines. Retrieved 8 November 2021 – via Google Books.
  12. ^ Bennett, Nigel (15 October 2013). Inspired to Design: – F1 cars, Indycars & racing tyres: the autobiography of Nigel Bennett. Veloce Publishing Ltd. ISBN 9781845845360. Retrieved 8 November 2021 – via Google Books.
  13. ^ "1997 Penske PC26 Mercedes Specifications". Ultimatecarpage.com.
  14. ^ "Penske PC-27 Mercedes-Benz 1998". GTPlanet. 29 March 2017.
  15. ^ "MARCH 86C : 1987 INDIANAPOLIS 500 WINNER : AL UNSER SR". Pensjeautomall.com. Retrieved 8 November 2021.

External links[edit]

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