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Group 3J Improved Production Cars is an Australian motor racing category for modified road cars. [1]
The category is defined by Motorsport Australia as being for race vehicles derived from registered production automobiles, with limited modifications to improve performance and reliability. [2] Cars must be mass-produced touring cars, the model of which has been:
Modifications to engines, brakes and suspension are permitted and a different engine, from the same manufacturer as the body shell, may be utilised. [1] Cars may be fitted with wheel arch flares, front air dams and rear deck spoilers. [2]
Improved Production Cars compete in one of four of engine capacity classes:
The Improved Production Racing Association of Australia (IPRA) is recognised by MA as the sole entity representing competitors in the category. [2] State championships are conducted in every Australian State and the Northern Territory and the Australian Improved Production Nationals are held annually on a state rotational basis. [3]
The category was formerly known as 3J Club Cars. [1] The name Group 3J Club Cars was used up to the year 2000, [4] and Group 3J Improved Production Cars from 2001. [5]
Note: The title was contested as the Club Car Nationals prior to 2001.
.
Group 3J Improved Production Cars is an Australian motor racing category for modified road cars. [1]
The category is defined by Motorsport Australia as being for race vehicles derived from registered production automobiles, with limited modifications to improve performance and reliability. [2] Cars must be mass-produced touring cars, the model of which has been:
Modifications to engines, brakes and suspension are permitted and a different engine, from the same manufacturer as the body shell, may be utilised. [1] Cars may be fitted with wheel arch flares, front air dams and rear deck spoilers. [2]
Improved Production Cars compete in one of four of engine capacity classes:
The Improved Production Racing Association of Australia (IPRA) is recognised by MA as the sole entity representing competitors in the category. [2] State championships are conducted in every Australian State and the Northern Territory and the Australian Improved Production Nationals are held annually on a state rotational basis. [3]
The category was formerly known as 3J Club Cars. [1] The name Group 3J Club Cars was used up to the year 2000, [4] and Group 3J Improved Production Cars from 2001. [5]
Note: The title was contested as the Club Car Nationals prior to 2001.