Group 3J Improved Production Cars

This article is about the current Australian Group 3J Improved Production Car category. For the Group C Improved Production Touring Car category of 1965 to 1972, see Group C (Australia).
Tony Wallis (Mazda 808) won the 2011 Australian Improved Production Nationals

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:

  • homologated by the FIA in Group A or
  • commercially available in Australia as a new car through a manufacturer’s dealer network, with at least 200 examples having been registered for road use in Australia or
  • otherwise recognised by MA for Group 3J[2]

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:

  • 0 – 1600 cc
  • 1600 – 2000 cc
  • 2000 – 3000 cc
  • 3000 – 6000 cc[3]

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]

  1. ^ a b c Improved Production Racing Association of NSW Archived 2012-12-30 at archive.today Retrieved on 15 March 2012
  2. ^ a b c d Specification of Automobiles - Group 3J – Improved Production Cars, 2012 CAMS Manual of Motor Sport Retrieved on 15 March 2012
  3. ^ a b The Official Website of the Queensland Improved Production Racing Association Retrieved on 15 March 2012
  4. ^ Specifications of Automobiles, Group 3J Club Cars, 2000 CAMS Manual of Motor Sport, page 7-97
  5. ^ Specifications of Automobiles, Group 3J Improved Production Cars, 2001 CAMS Manual of Motor Sport, page 7-11897