Homologation (motorsport)
Encyclopedia
In motorsports
, homologation is the approval process a vehicle, race track or standardised part must go through to race in a given league or series. The regulations and rules that must be met are generally set by the series' sanctioning body. The word
is derived from the Greek
homologeo—literally "same words"—for "agree".
The names of the Ferrari 250 GTO
, 288 GTO
, Pontiac GTO
, and Mitsubishi GTO
, where "GTO" stands for "Gran Turismo Omologato" ("Grand Touring, Homologated"), use the term explicitly.
In racing series that are "production-based" (that is, the vehicles entered in the series are based on production vehicles for sale to the public), homologation requires not only compliance with a racing series' technical guidelines (for example, engine displacement, chassis construction, suspension design and such) but it often includes minimum levels of sales to ensure that vehicles are not designed and produced solely for racing in that series. Since such vehicles are primarily intended for the race track, practical use on public roads is generally a secondary design consideration, so long as government regulations are met.
Sales aids (for example, the inclusion of luxury trim features, such as leather surfaces, audio systems, anti-theft systems) even where such accommodations are made, are generally barely within the limits of government requirements for sale to consumers, to minimize reduction in performance. Such accommodations are often reversible, so that production vehicles can be modified to racing trim. A common example of this process is the exhaust system, often modified in the production vehicle to meet legal requirements in the jurisdictions where the vehicle is sold. Since most production-based racing series allow some level of modification, including the removal of exhaust systems that reduce emissions at the cost of engine performance, vehicles that were produced and sold primarily to meet the homologation-guidelines of a particular series are often designed for easy modification of such components.
Many manufacturers of vehicles used in production-based racing (whether the vehicles were produced solely to meet homologation guidelines or as a genuine for-profit line) offer a line of high-performance parts not intended for use on public roads. Such components could include exhaust systems and engine internals, and are generally within the homologation guidelines of the racing series in which the vehicles are to be used.
There is also a brisk after-market supplying components for converting production vehicles to race trim for production-based racing series. One example is lightweight, quickly removable bodywork, to replace stock bodywork that is often heavier and has features required on public roads, such as lighting systems.
Many sports cars are released to the public for the express purpose of meeting the homologation guidelines of a particular series or several series. In such cases numbers manufactured are often just enough to meet the minimum requirement for homologation by the racing series for which the vehicle was designed. Examples of this are the BMW M3 GTR, Celica GT-Four/Celica Alltrac
, Ferrari 288 GTO
, and the Nissan Skyline GT-R
'N1 models'.
The same is true of most motorcycle racing series that can be considered production-based and include the various classes of such premier series as the AMA Superbike Championship or the FIM
's Superbike World Championship
. As with automobiles, motorcycle manufacturers manufacture certain models for the consumer market to enable the model to qualify for entry in a particular production-based racing series.
One example of a production motorcycle that was designed and built primarily to meet the homologation requirements is the 2008 Ducati 1098R a limited edition version of Ducati's 1098 S sportbike. The 1098R is even referred to by Ducati in the press as the Homologation Special. Wherever any compromise was made on the 1098S for the purpose of making it a more street-friendly and consumer-ready vehicle (for example, reliability, rideability, economy) the 1098R's design makes a far more limited compromise or no compromise at all. An example is the displacement—unlike the engine of the 1098S that has 1098 cc displacement, the 1098R's engine has a displacement of 1198 cc, allowing it to take advantage of the WSBK
rulebook that allows up to 1200 cc for engines of the type found in the 1098 series.
Auto racing
Auto racing is a motorsport involving the racing of cars for competition. It is one of the world's most watched televised sports.-The beginning of racing:...
, homologation is the approval process a vehicle, race track or standardised part must go through to race in a given league or series. The regulations and rules that must be met are generally set by the series' sanctioning body. The word
Homologation
Homologation is a technical term, derived from the Greek homologeo for "to agree", which is generally used in English to signify the granting of approval by an official authority...
is derived from the Greek
Greek language
Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...
homologeo—literally "same words"—for "agree".
The names of the Ferrari 250 GTO
Ferrari 250 GTO
The Ferrari 250 GTO is a GT car which was produced by Ferrari from 1962 to 1964 for homologation into the FIA's Group 3 Grand Touring Car category....
, 288 GTO
Ferrari 288 GTO
The Ferrari GTO is an exotic homologation of the Ferrari 308 GTB produced from 1984 through 1986, designated GT for Gran Turismo and O for Omologato .- Background :...
, Pontiac GTO
Pontiac GTO
The Pontiac GTO is an automobile built by Pontiac Division of General Motors in the United States from 1964 to 1974, and by GM subsidiary Holden in Australia from 2004 to 2006. It is considered an innovative, and now classic muscle car of the 1960s and 1970s...
, and Mitsubishi GTO
Mitsubishi GTO
The Mitsubishi GTO is a sports car built by Japanese automaker Mitsubishi Motors between 1990 and 2001. In most export markets it was rebadged as a Mitsubishi 3000GT. It was also sold by Chrysler in North America as a Dodge Stealth captive import from the 1991 to 1996 model years with only minor...
, where "GTO" stands for "Gran Turismo Omologato" ("Grand Touring, Homologated"), use the term explicitly.
In racing series that are "production-based" (that is, the vehicles entered in the series are based on production vehicles for sale to the public), homologation requires not only compliance with a racing series' technical guidelines (for example, engine displacement, chassis construction, suspension design and such) but it often includes minimum levels of sales to ensure that vehicles are not designed and produced solely for racing in that series. Since such vehicles are primarily intended for the race track, practical use on public roads is generally a secondary design consideration, so long as government regulations are met.
Sales aids (for example, the inclusion of luxury trim features, such as leather surfaces, audio systems, anti-theft systems) even where such accommodations are made, are generally barely within the limits of government requirements for sale to consumers, to minimize reduction in performance. Such accommodations are often reversible, so that production vehicles can be modified to racing trim. A common example of this process is the exhaust system, often modified in the production vehicle to meet legal requirements in the jurisdictions where the vehicle is sold. Since most production-based racing series allow some level of modification, including the removal of exhaust systems that reduce emissions at the cost of engine performance, vehicles that were produced and sold primarily to meet the homologation-guidelines of a particular series are often designed for easy modification of such components.
Many manufacturers of vehicles used in production-based racing (whether the vehicles were produced solely to meet homologation guidelines or as a genuine for-profit line) offer a line of high-performance parts not intended for use on public roads. Such components could include exhaust systems and engine internals, and are generally within the homologation guidelines of the racing series in which the vehicles are to be used.
There is also a brisk after-market supplying components for converting production vehicles to race trim for production-based racing series. One example is lightweight, quickly removable bodywork, to replace stock bodywork that is often heavier and has features required on public roads, such as lighting systems.
Many sports cars are released to the public for the express purpose of meeting the homologation guidelines of a particular series or several series. In such cases numbers manufactured are often just enough to meet the minimum requirement for homologation by the racing series for which the vehicle was designed. Examples of this are the BMW M3 GTR, Celica GT-Four/Celica Alltrac
Toyota Celica GT-Four
The Toyota Celica GT-Four is a high performance model of the Celica liftback, with a turbocharged 3S-GTE engine, and full-time AWD. It was created to compete in the World Rally Championship, whose regulations dictate that a manufacturer must build road-going versions of the vehicle in sufficient...
, Ferrari 288 GTO
Ferrari 288 GTO
The Ferrari GTO is an exotic homologation of the Ferrari 308 GTB produced from 1984 through 1986, designated GT for Gran Turismo and O for Omologato .- Background :...
, and the Nissan Skyline GT-R
Nissan Skyline GT-R
The Nissan Skyline GT-R is a Japanese sports car based on the Nissan Skyline range.The first GT-Rs were produced from 1969–1973. After a 16 year hiatus since the KPGC110 in 1972, the GT-R name was revived in 1989 with the Skyline R32. This car was nicknamed "Godzilla" by the Australian motoring...
'N1 models'.
The same is true of most motorcycle racing series that can be considered production-based and include the various classes of such premier series as the AMA Superbike Championship or the FIM
Fédération Internationale de Motocyclisme
The Fédération Internationale de Motocyclisme is the governing body of motorcycle racing. It represents 103 national motorcycle federations that are divided into six regional continental unions....
's Superbike World Championship
Superbike World Championship
Superbike World Championship is the worldwide Superbike racing Championship. The championship was founded in . The Superbike World Championship season consists of a series of rounds held on permanent racing facilities...
. As with automobiles, motorcycle manufacturers manufacture certain models for the consumer market to enable the model to qualify for entry in a particular production-based racing series.
One example of a production motorcycle that was designed and built primarily to meet the homologation requirements is the 2008 Ducati 1098R a limited edition version of Ducati's 1098 S sportbike. The 1098R is even referred to by Ducati in the press as the Homologation Special. Wherever any compromise was made on the 1098S for the purpose of making it a more street-friendly and consumer-ready vehicle (for example, reliability, rideability, economy) the 1098R's design makes a far more limited compromise or no compromise at all. An example is the displacement—unlike the engine of the 1098S that has 1098 cc displacement, the 1098R's engine has a displacement of 1198 cc, allowing it to take advantage of the WSBK
Superbike World Championship
Superbike World Championship is the worldwide Superbike racing Championship. The championship was founded in . The Superbike World Championship season consists of a series of rounds held on permanent racing facilities...
rulebook that allows up to 1200 cc for engines of the type found in the 1098 series.