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| Company type | Private Limited Company |
|---|---|
| Founded | 1983  |
| Founder | Mario Illien and Paul Morgan |
| Headquarters | Brixworth, Northamptonshire ,United Kingdom |
| Website | www |
Ilmor is a British independent high-performancemotor racing engineering company. It was founded byMario Illien andPaul Morgan in November 1983. With manufacturing based inBrixworth,Northamptonshire, and maintenance offices inPlymouth, Michigan, the company supplies engines and consultancy to theIndyCar Series andMotoGP.
Ilmor Engineering originally designed built and producedIndyCar engines forChevrolet. In the 1990s, the company built a partnership withMercedes-Benz to power F1 cars for both theSauber andMcLaren teams. After the death of Paul Morgan in a vintage aeroplane crash in 2001, Mercedes increased its stake until it owned the entire company, and renamed itMercedes-Benz High Performance Engines Ltd. In 2005, Mario Illien concluded a deal to purchase the Special Projects part of the company in partnership withRoger Penske, which worked in partnership withHonda Performance Development for IndyCar engines between 2003 and 2011.[1] This new company, which is independent of Mercedes, is once again known as Ilmor Engineering Ltd. They developed theIlmor X3 for the 2007MotoGP World Motorcycle Championship, entering one race before withdrawing and effectively shutting down the race team, due to funding problems.
Racing remains the core part of the business today and Ilmor acts as a consultant for motorsport clients from all forms of racing. However, the business is now using its racing expertise to diversify into other areas such as OEM automotive, defence, marine and energy efficient engine applications.
| Ilmor 265-A[2][3][4] | |
|---|---|
| Overview | |
| Manufacturer |  / Ilmor-Chevrolet |
| Production | 1984–1993 |
| Layout | |
| Configuration | 90°V8 |
| Displacement | 2.65 L (162 cu in) |
| Cylinder bore | 3.465 in (88.0 mm) |
| Piston stroke | 2.142 in (54.4 mm) |
| Valvetrain | 32-valve,DOHC, four-valves per cylinder |
| Compression ratio | 11:1 |
| Combustion | |
| Fuel system | Mechanical multi-point fuel injection |
| Fuel type | Gasoline |
| Oil system | Dry sump |
| Output | |
| Power output | 720–850 hp (537–634 kW) |
| Torque output | 350–415 lb⋅ft (475–563 N⋅m) |
Both engineers were working at Cosworth on theCosworth DFX turbocharged methanol engine for theCART Indy Car World Series; differences of opinion over the future development direction led them to break away from their parent company to pursue their own ideas. There was some acrimony in their split from Cosworth, their former employer claiming that the Ilmor engine was little different from their planned modifications to the DFX.[5]
Founded as an independent British engine manufacturer in 1983, it started building engines for Indy cars with the money of team owner and chassis manufacturer Roger Penske. The Ilmor 265-A, badged initially as the Ilmor-Chevrolet Indy V-8, debuted at the1986 Indianapolis 500 withTeam Penske driverAl Unser. In 1987, the engine program expanded to all three Penske team drivers (Rick Mears,Danny Sullivan, and Al Unser),Patrick Racing, andNewman/Haas Racing.Mario Andretti, driving for Newman/Haas, won atLong Beach, the engine's first Indy car victory. He also won the pole position for the1987 Indianapolis 500.Rick Mears earned the first victory for the engine in a 500 mile race at the1987 Pocono 500. A year later, now badged as the Chevrolet Indy V-8, Mears won the1988 Indianapolis 500, the engine's first win at Indianapolis. The engine went on to have a record inCART of winning 64 of 78 races from 1987 to 1991.
In1992, the 265-A engine was followed up by the 265-B engine. The "Chevy-B" was fielded singly by Penske Racing (Rick Mears andEmerson Fittipaldi) in 1992 and won four CART series races. All other Ilmor teams remained with the "Chevy-A" for 1992.Bobby Rahal, driving a "Chevy-A" won the 1992 CART championship, the fifth consecutive (and final) for the 265-A.Al Unser Jr. won the1992 Indianapolis 500 driving a "Chevy-A", also the fifth consecutive (and final) Indy 500 win for the 265-A.Emerson Fittipaldi drove a "Chevy-B" to 4th place in points.
For the1993 season, the 265-C engine was introduced, intended to replace both the 265-A and the 265-B. Chevrolet dropped its badging support after the 1993 season.
For the1994 season, two new engines were introduced. The 265-D engine replaced the 265-C. Without badging support, the engines were referred to simply as the "Ilmor-C" and the "Ilmor-D".
For 1995,Mercedes-Benz became the badging manufacturer for the Ilmor Indy car engines. In1996, 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 the1996 Indy 500, the "Ilmor Mercedes-Benz D" was used byGalles Racing, and finished second, the powerplant's one and only start in anIRL-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.
In 1991 Ilmor entered Formula 1 with a V10 engine as exclusive supplier to theLeyton House team (formerlyMarch). Ilmor also supplied engines to the Tyrrell team, starting from 1992. Powered by the Ilmor V10, Tyrrell scored eight points throughAndrea de Cesaris and March another three throughKarl Wendlinger.
The Sauber sportscar team and Mercedes-Benz signed a deal with Ilmor after scrapping plans for a Mercedes engine. After scoring 12 points in 1993, Mercedes entered officially in 1994 using an updated version of the 1993 engine. The same year Mercedes-Benz acquiredChevrolet's 25% share of Ilmor.
The 265D V8s ran the entire1994 Indy Car season badged as "Ilmor Indy V8", withTeam Penske headlining the program.
In 1994, Ilmor produced the Mercedes-Benz 500I engine for Team Penske. The 500I exploited a loophole in the engine rules at theIndianapolis 500, which was run under slightly different rules than other CART races. Originally stock-block engines based on production units, fitted with twopushrod and rocker arm actuated valves per cylinder, were permitted to run at increased cubic capacity (3.43 litres vs 2.65 litres) and significantly greater turbo boost than the pure racing engines. For several yearsBuick V6 units had been extremely fast but fragile; the restrictions were relaxed with the intent of permitting Buick-like engines to use stronger but still production-like blocks – theMenard engine based on the Buick took this approach.
Ilmor produced a new racing engine retaining pushrods designed specifically for the requirements of the Indianapolis 500, producing a V8 engine which was approximately 200 bhp (150 kW) more powerful than the Cosworth XB and Ilmor 265D opposition. Team Penske's cars were the fastest at the1994 Indianapolis 500.Al Unser Jr. won the race, withEmerson Fittipaldi also figuring strongly until an accident on lap 184. The loophole was closed for 1995.
For 1995 the 265D V8s were rebadged Mercedes.Al Unser Jr. finished runner-up with four wins.Rahal-Hogan Racing joined Penske as major teams. After the CART-IRL split, Mercedes left CART after the 2000 season.
Ilmor continued working in the United States on theOldsmobile Aurora V8 for the IRLPenske entries.[6]
In 2003 Honda partnered with Ilmor on theHonda Indy V8 engine between 2003 and 2011 for co-assembling, preparation, tune-up and maintenance.[7][8] At the conclusion of the 2011 season, Honda discontinued their partnership with Ilmor subsequently moving all design, development and production in house without any third-party tune-up partnership to HPD, for the 2012 Honda Indy V6.[9]
In 2012 Chevrolet returned to theIndyCar Series, partnering with Ilmor on theChevrolet Indy V6 engine program in supplying free engines forTeam Penske, with the rest of Chevrolet-powered IndyCar Series teams paying lease system.
Ilmor is the option specification engine supplier of engines for theARCA Menards Series andNASCAR Camping World Truck Series. Truck Series teams are allowed to use the option crate engine based on the LSX, and many teams have switched to the option engine.[10] Ilmor was criticized when four of its NT1 engines failed during the2019 World of Westgate 200 atLas Vegas Motor Speedway. The manufacturer took responsibility for the engines that suffered from severe detonation due to the combination of the high engine load condition combined with the extreme weather conditions in Las Vegas.[11] Despite Ilmor's announcement, NASCAR denied ThorSport's request to reinstate Enfinger and Sauter into the playoffs.[12]
In 2021 Ilmor partnered withEdelbrock to supply the 396 engine, which is primarily used in ARCA, for theSuperstar Racing Experience.[13]
Ilmor built the Mercedes-Benz engines forMcLaren after Ilmor repositioned its Formula One involvement from independent engine manufacturer to engine builder and assembler toMercedes-Benz High Performance Engines (akin toMecachrome withRenault andCosworth withFord schemes).
The Ilmor engines went on to be successful with McLaren, scoring several podiums in both1995 and1996, leading to three wins in1997 and back to back drivers championship in1998 and1999, as well as the constructor's championship in 1998.
In 2001 Paul Morgan was killed while landing one of his vintage airplanes, aHawker Sea Fury atSywell Aerodrome,Northamptonshire. In 2002DaimlerChrysler increased its share to 55% and renamed the company Mercedes-Ilmor. In 2005 DaimlerChrysler became the sole owner of Ilmor and renamed the companyMercedes-Benz High Performance Engines Ltd.
Ilmor Engineering, Inc., a sister company to Ilmor U.K., was incorporated in 1990 with the primary goal of providing engineering support to customers using the Ilmor Ltd.-manufactured Chevrolet 265A Indy Car engine.
Ilmor, Inc.’s capabilities have grown to encompass design and analysis tools, engine and sub-systems test capabilities – including emissions compliance, manufacturing, electronics and wiring design and manufacture, and facilities for service and support[citation needed], inlcuding auto racing, boat racing, high-performance road cars, high performance offshore powerboats and custom V-twin motorcycles[citation needed].
Ilmor, Inc. entered the high-performance marine world in 2002, building race engines for the SuperCat Offshore Racing Series of theAmerican Power Boat Association (APBA), using modifiedDodge Viper's V10 engines.
Ilmor's high-performance marine division has grown in the U.S. and European boat market[citation needed].
Emissions requirements established in 2009 by theCalifornia Air Resources Board, the federalEnvironmental Protection Agency and theEuropean Union required all high-performance marine engines had to meet more stringent exhaust emissions standards. The MV10-650 and the MV10-725 were created to meet the new requirements.
Ilmor entered the MV10 engine into powerboat competition in 2007[citation needed]. In the first year of competition for the engines, a pair of Ilmor Marine MV10-625 engines powered the #99 Fountain Worldwide “King of Shaves” powerboat to the 2007 Powerboat P1 Evolution Class World Championship. Two additional European based Powerboat P1 World Championships were obtained in 2008 and 2009 and World Championship success[citation needed] in the US in 2008.
In 2006, Ilmor announced that they would enter a two-bike team in theMotoGP motorcycle racing series and would enter a single rider team as a wildcard entry in the final two races of the 2006 season. For the 2007 MotoGP season, engine capacity was to be reduced to 800cc from 990cc so Ilmor's wildcard entries in 2006 would be the first appearance of an 800cc MotoGP motorcycle at a race meeting.[14]
Former 500 cc race winnerGarry McCoy was confirmed as the rider for theMichelin-shod bike in its 2006 appearances, scoring points both in the2006 Portuguese Grand Prix at theAutódromo do Estoril and the2006 Gran Premio de la Comunitat Valenciana,[15] becoming the first rider to score points on an 800cc MotoGP machine, though McCoy finished last on both occasions, four and seven laps down respectively.
On 18 December 2006, Ilmor Engineering confirmed via their website thatJeremy McWilliams andAndrew Pitt had been selected as riders for the 2007 season.[16] On 15 March 2007 after one race, the team announced that they were taking a break from Moto GP as a result of funding issues.[17]
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