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The Nissan NR is a family of prototype four-stroke 2.0-litre single-turbocharged inline-4 racing engine, developed and produced by Nissan for the Super GT series under the Nippon Race Engine framework. The engine has been produced in a number of different configurations over the years. The NR engine is fully custom-built.[1][2][3][4][5][6][7]
| Nissan NR engine | |
|---|---|
| Overview | |
| Manufacturer | Nissan |
| Production | 2014–present (Super GT) |
| Layout | |
| Configuration | Inline-4 |
| Displacement | 2.0 L (122 cu in) |
| Cylinder bore | 86–90 mm (3.39–3.54 in) |
| Piston stroke | Free but typically approximately between 86–90 mm (3.39–3.54 in) |
| Cylinder block material | Die cast steel or aluminium alloy. Machining process from a solid is not permitted |
| Cylinder head material | Die cast steel or aluminium alloy |
| Valvetrain | DOHC 16-valve (four-valves per cylinder) |
| Compression ratio | 15:1 |
| Combustion | |
| Turbocharger | Single-turbocharged by Garrett Advancing Motion with 3.5 bar (51 psi) of turbo boost pressure |
| Fuel system | Bosch HDEV6 350 bar (5,076 psi) central high-pressure gasoline direct fuel injection. One direct injector per cylinder fed by an engine-driven high-pressure fuel pump |
| Management | Bosch Motronic MS 7.4 |
| Fuel type | Various (102 RON unleaded racing gasoline) |
| Oil system | Dry sump |
| Cooling system | Single mechanical water pump feeding a single-sided cooling system |
| Output | |
| Power output | 550–650 PS (542–641 hp; 405–478 kW) |
| Torque output | 500–700 N⋅m (370–520 lbf⋅ft) |
| Dimensions | |
| Length | 600 mm (23.62 in) |
| Width | 697 mm (27.44 in) |
| Height | 693 mm (27.28 in) |
| Dry weight | 187 lb (85 kg) including turbocharger |
| Chronology | |
| Predecessor | Nissan VRH engine (in Super GT) |
All versions of the engine are identical in performance.
- NR20A (2014–2019)
- NR20B (2020)
- NR4S21 (2021–2023)
- NR4S24 (2024–present)
- Honda HR-414E/HR-417E/HR-420E engine, similar engines also developed under the Nippon Race Engine framework
- Toyota RI engine, similar engine also developed under the Nippon Race Engine framework
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