Mercedes-Benz Indy V8 engine
| Ilmor 265-D (1994)[1] Mercedes-Benz IC108 (1995-2000) | |
|---|---|
| Overview | |
| Manufacturer | Ilmor-Mercedes |
| Production | 1994-2000 |
| Layout | |
| Configuration | 72°-82°[2] V-8 |
| Displacement | 2.65 L (161.7 cu in) |
| Cylinder bore | 91 mm (3.6 in) |
| Piston stroke | 50.9 mm (2.0 in) |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Valvetrain | 16-valve to 32-valve, OHV/DOHC,[3] two-valves per cylinder to four-valves per cylinder |
| Compression ratio | 12.4:1 |
| Combustion | |
| Turbocharger | Garrett single-turbo |
| Fuel system | Electronic fuel injection |
| Fuel type | Methanol |
| Oil system | Dry sump |
| Cooling system | Liquid cooling |
| Output | |
| Power output | 800–1,000 hp (597–746 kW) |
| Torque output | 345–540 lb⋅ft (468–732 N⋅m) |
| Dimensions | |
| Dry weight | 95–123 kg (209–271 lb)[4] |
| Chronology | |
| Predecessor | Mercedes-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]- Penske PC-22
- Penske PC-23[7]
- Penske PC-24[8][9][10]
- Penske PC-25[11][12]
- Penske PC-26[13]
- Penske PC-27[14][15]
- Reynard 94I
- Reynard 95I
- Reynard 96I
- Reynard 97I
- Reynard 98I
- Reynard 99I
- Reynard 2KI
- Lola T94/00
- Lola T95/00
- Lola T96/00
- Lola B99/00
- Lola B2K/00
References
[edit]- ^ "8W - What? - Penske-Mercedes PC23 500i". 8w.forix.com.
- ^ "Review: 'Beast' Recalls Drama Of Designing Legendary Race Engine". EngineLabs. October 8, 2014.
- ^ "Unintended consequences: The backstory Of Indy's most remarkable engine". May 15, 2020.
- ^ "engine weights". www.gomog.com.
- ^ "Mercedes Indy Engine". Speedway Motors Museum of American Speed.
- ^ 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.
- ^ "1994 Penske PC23 - Spec Sheet | The Dawn Treader Customer Portal". customers.dtperformanceltd.co.uk.
- ^ 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.
- ^ Magazines, Hearst (8 June 1995). "Popular Mechanics". Hearst Magazines. Retrieved 8 November 2021 – via Google Books.
- ^ Bentley, Karen; Gluck, Jeff (4 June 2015). The Unsers. Infobase Learning. ISBN 9781438142678. Retrieved 8 November 2021 – via Google Books.
- ^ Magazines, Hearst (8 June 1996). "Popular Mechanics". Hearst Magazines. Retrieved 8 November 2021 – via Google Books.
- ^ 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.
- ^ "1997 Penske PC26 Mercedes Specifications". Ultimatecarpage.com.
- ^ "Penske PC-27 Mercedes-Benz 1998". GTPlanet. 29 March 2017.
- ^ "MARCH 86C : 1987 INDIANAPOLIS 500 WINNER : AL UNSER SR". Pensjeautomall.com. Retrieved 8 November 2021.