| Honda HR-414E/HR-417E/HR-420E | |
| Manufacturer: | Honda |
| Production: | 2014-present |
| Configuration: | Inline-4 |
| Displacement: | 2L |
| Bore: | 86- |
| Stroke: | Free but typically approximately between 86- |
| Length: | 600mm |
| Width: | 697mm |
| Height: | 693mm |
| Block: | Die cast steel or aluminium alloy. Machining process from a solid is not permitted |
| Head: | Die cast steel or aluminium alloy |
| Valvetrain: | DOHC 16-valve (four-valves per cylinder) |
| Turbocharger: | Single-turbocharged by Garrett Advancing Motion with 3.5bar of turbo boost pressure |
| Compression: | 15:1 |
| Power: | 550PS |
| Torque: | > |
| Coolingsystem: | Single mechanical water pump feeding a single-sided cooling system |
| Weight: | 187lb including turbocharger |
| Fuelsystem: | Bosch HDEV6 350bar 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 |
| Fueltype: | Various (102 RON unleaded racing gasoline) |
| Oilsystem: | Dry sump |
The Honda HR-414E, HR-417E and Honda HR-420E are a series of prototype, four-stroke 2.0-litre single-turbocharged inline-4 racing engines, developed and produced by Honda for the Super GT series and Super Formula under the Nippon Race Engine framework. The HR-420E engine is fully custom-built.[1] [2]