GTS-R
The ultimate version of the R31 was the RB20DET-R powered HR31 GTS-R Coupe of which 823 units were built to allow homologation for Group A Touring Car racing. Introduced in late 1987, it had a reworked version of the normal RB20DET with a much larger turbocharger on a tubular steel exhaust manifold, as well as a much larger front-mounted intercooler boosting power to a factory claimed 210 ps (154 kW), with racing versions making over 430 hp (321 kW) in Group A trim, though this was still at least 110 hp (82 kW) less than the leading Group A car of the time, the Ford Sierra RS500 (which had approximately the same weight as the Nissan), and around 70 hp (52 kW) less than the heavier (by around 225 kg (496 lb)) V8 Holden Commodore.
Jim Richards and Mark Skaife drove a Gibson Motor Sport prepared Skyline GTS-R to win the 1989 Sandown 500 in Australia. Richards also used the GTS-R in 6 of the 8 races to win the 1990 Australian Touring Car Championship (he used the R32 GT-R in the final two rounds of the series). It was the first Australian Touring Car Championship victory for a Nissan driver after George Fury placed second in 1983 and 1986 and Glenn Seton gained second position in 1987.
The ultimate version of the R31 was the RB20DET-R powered HR31 GTS-R Coupe of which 823 units were built to allow homologation for Group A Touring Car racing. Introduced in late 1987, it had a reworked version of the normal RB20DET with a much larger turbocharger on a tubular steel exhaust manifold, as well as a much larger front-mounted intercooler boosting power to a factory claimed 210 ps (154 kW), with racing versions making over 430 hp (321 kW) in Group A trim, though this was still at least 110 hp (82 kW) less than the leading Group A car of the time, the Ford Sierra RS500 (which had approximately the same weight as the Nissan), and around 70 hp (52 kW) less than the heavier (by around 225 kg (496 lb)) V8 Holden Commodore.
Jim Richards and Mark Skaife drove a Gibson Motor Sport prepared Skyline GTS-R to win the 1989 Sandown 500 in Australia. Richards also used the GTS-R in 6 of the 8 races to win the 1990 Australian Touring Car Championship (he used the R32 GT-R in the final two rounds of the series). It was the first Australian Touring Car Championship victory for a Nissan driver after George Fury placed second in 1983 and 1986 and Glenn Seton gained second position in 1987.
