Group 3J Improved Production Cars is an Australian motor racing category for modified road cars.Improved Production Racing Association of NSW Retrieved on 15 March 2012

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.Specification of Automobiles - Group 3J – Improved Production Cars, 2012 CAMS Manual of Motor Sport Retrieved on 15 March 2012 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

Modifications to engines, brakes and suspension are permitted and a different engine, from the same manufacturer as the body shell, may be utilised. Cars may be fitted with wheel arch flares, front air dams and rear deck spoilers.

Improved Production Cars compete in one of four of engine capacity classes: 0 – 1600 cc 1600 – 2000 cc 2000 – 3000 cc 3000 – 6000 ccThe Official Website of the Queensland Improved Production Racing Association Retrieved on 15 March 2012

The Improved Production Racing Association of Australia (IPRA) is recognised by MA as the sole entity representing competitors in the category. 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.

The category was formerly known as 3J Club Cars. The name Group 3J Club Cars was used up to the year 2000,Specifications of Automobiles, Group 3J Club Cars, 2000 CAMS Manual of Motor Sport, page 7-97 and Group 3J Improved Production Cars from 2001.Specifications of Automobiles, Group 3J Improved Production Cars, 2001 CAMS Manual of Motor Sport, page 7-11897

Australian Improved Production Nationals

YearNationals History, www.ipranationals.com, as archived at web.archive.org Winning driver Car Circuit State Date 1991 Terry Lewis Mazda RX-3 Winton Raceway Victoria 1992 Phil Morriss Datsun 1600 Winton Raceway Victoria 1993 Andrew Brown Mazda RX-3 Eastern Creek International Raceway New South Wales 1994 Ken Douglas Mazda RX-7 Phillip Island Grand Prix Circuit Victoria 1995 Ken Douglas Mazda RX-7 Mallala Motor Sport Park South Australia 1996 Roger Hurd Holden LX Torana Baskerville Raceway Tasmania 1997 Roger Hurd Holden LX Torana Lakeside International Raceway Queensland 30 NovemberNatsoft Results Retrieved on 21 March 2012 1998 Noel McFarlane Mazda RX-3 Eastern Creek International Raceway New South Wales 29 NovemberNatsoft Results Retrieved on 21 March 2012 1999 Andrew Brown Mazda RX-7 Phillip Island Grand Prix Circuit Victoria 2000 Roger Hurd Holden LX Torana Mallala Motor Sport Park South Australia 10 SeptemberNatsoft Results Retrieved on 21 March 2012 2001 Roger Hurd Holden LX Torana Symmons Plains International Raceway Tasmania 24–25 NovemberNatsoft Results Retrieved on 21 March 2012 2002 Ken Douglas Mazda RX-7 Queensland Raceway Queensland 3 NovemberNatsoft Results Retrieved on 21 March 2012 2003 Wayne Wakefield Mazda 808 Oran Park Grand Prix Circuit New South Wales 31 AugustNatsoft Results Retrieved on 21 March 2012 2004 Ray Hislop Ford EB Falcon GT Phillip Island Grand Prix Circuit Victoria 2 MayNatsoft Results Retrieved on 21 March 2012 2005 Adam Allan Datsun 1200 Mallala Motor Sport Park South Australia 13 NovemberNatsoft Results Retrieved on 21 March 2012 2006 Scott Fleming Mazda RX-7 Baskerville Raceway Tasmania 15 OctoberNatsoft Results Retrieved on 21 March 2012 2007 David Loftus Nissan Skyline R32 Morgan Park Raceway Queensland 30 SeptemberNatsoft Results Retrieved on 21 March 2012 2008 Justin Keys Mazda RX-3 Oran Park Grand Prix Circuit New South Wales 9 NovemberNatsoft Results Retrieved on 21 March 2012 2009 James Atkinson Holden VX Commodore Phillip Island Grand Prix Circuit Victoria 22 NovemberNatsoft Results Retrieved on 21 March 20122009 Latest Paul Rowe Motorsport News - Nationals Phillip Island Retrieved on 21 March 2012 2010 Kevin Ledger Subaru Impreza Barbagallo Raceway Western Australia 17 OctoberNatsoft Results Retrieved on 21 March 2012 2011 Tony Wallis Mazda 808 Mallala Motor Sport Park South Australia 20 NovemberNatsoft Results Retrieved on 21 March 2012 2012 Ray Hislop Ford BF Falcon Baskerville Raceway Tasmania 11 NovemberResults - 2012 Aust Improved Production Nationals -Final, racing.natsoft.com.au Retrieved on 30 September 2013 2013 Over 2 litre: Ray Hislop Under 2 litre: Bob Jowett Ford BF Falcon Honda Civic Morgan Park Raceway Queensland 29 September2013 Improved Production & Formula Vee Nationals - General Supplementary Regulations, www.fvee.org.au, as archived at web.archive.org 2014 Over 2 litre: Kevin LedgerNatsoft Results Retrieved on 21 May 2015 Under 2 litre: Andrew Tendli Subaru Impreza Honda Civic Wakefield Park Raceway2014 IPRA National – Supplementary Regulations, www.ipranationals.com, as archived at web.archive.org New South Wales 9 November 2015 Over 2 litre: Ray Hislop Under 2 litre: James McKinnell Ford BF Falcon Honda Integra Hidden Valley Raceway Northern Territory 12 July 2016 Over 2 litre: Ray HislopOnline Race Results, www.natsoft.com.au Under 2 litre: Graeme Cox Ford BF Falcon Honda Civic Phillip Island2016 Improved Production Nationals Sporting Regulations, www.cams.com.au via web.archive.org Victoria 26–27 November 2017 Over 2 litre: Ray Hislop2017 IPRA Nationals, www.iprawa.net, as archived at web.archive.org Under 2 litre: David Waldon Ford BF Falcon Mazda RX-3 Barbagallo Raceway2017 Improved Production Nationals Sporting Regulations, www.cams.com.au, as archived at web.archive.org Western Australia 21–22 October 2018 Over 2 litre: Ray HislopImproved Production Nationals: Over 2 Litres - Final, racing.natsoft.com.au, as archived at web.archive.org Under 2 litre: David WaldonImproved Production Nationals: Under 2 Litres - Final, racing.natsoft.com.au, as archived at web.archive.org Ford BF Falcon Mazda RX-3 The Bend Motorsport Park2018 Improved Production Nationals Sporting Regulations, docs.cams.com.au, as archived at web.archive.org South Australia 9–11 November 2019 Ray Hislop2019 Improved Production Nationals Final, racing.natsoft.com.au, as archived at web.archive.org Ford BF Falcon Baskerville Raceway2019 Improved Production Nationals Sporting Regulations, docs.cams.com.au, as archived at web.archive.org Tasmania 16–17 November 2020–2021 Not held 2022 Over 2 litre: Zak Hudson Under 2 litre: Kurt Macready Mazda RX-7 Nissan Silvia Morgan Park Raceway Queensland 1–2 October Garry O'Brien, October 3, 2022, IMPROVED PRODUCTION NATIONALS WON BY ZAK HUDSON, autoaction.com.au, as archived at web.archive.org 2023 Over 2 litre: Adam Poole Under 2 litre: Kurt Macready Holden Monaro Nissan Silvia Sydney Motorsport Park New South Wales 16–18 June 2024 Over 2 litre: Matt Cherry Under 2 litre: Kurt Macready Holden Monaro Nissan Silvia Hidden Valley Raceway Northern Territory 19–21 July 2025 Over 2 litre: Adam Poole Garry OBrien, 24 Nov 2025, Poole and Vereker take Improved Production Nationals, speedcafe.com, as archived at web.archive.org Under 2 litre: Brad Vereker Holden Monaro Datsun 1200 CoupeAmy Hume, 02/12/2025, One national title, two podium places, midlandexpress.com.au, as archived at web.archive.org Phillip Island Victoria 21–23 November Garry OBrien, 28 Nov 2024, 2025 Improved Production Nationals returns to Phillip Island, speedcafe.com, web.archive.org

Note: The title was contested as the Club Car Nationals prior to 2001.

References

External links [www.ipranationals.com www.ipranationals.com]