The first RB20E / ET / DE / DET engines were installed on the Nissan Skyline R31. Early double overhead camshaft engines are referred to as “Red Top” because they have red caps. Later versions used the ECCS engine management system. There were different versions of 2-liter RB20 engines: RB20E, RB20ET, RB20DE, RB20DE NEO, RB20DET, RB20P, RB20DET-R, NEO RB20DE.
Specifications
| Manufacturer | Yokohama plant |
| Also called | RB20 |
| Production years | 1984-2002 |
| Cylinder block alloy | cast iron |
| Fuel system | injector |
| Configuration | inline |
| Number of cylinders | 6 |
| Valves per cylinder | 2 4 |
| Piston stroke, mm | 69.7 |
| Cylinder bore, mm | 78 |
| Compression ratio | 10.0 (RB20DE) 9.5 (RB20E) 8.5 (RB20DET) |
| Displacement, cc | 1998 |
| Power output, hp | 115/5600 125/5600 130/5600 145/6000 150/6400 155/6400 165/6400 170/6000 180/6400 190/6400 215/6400 |
| Torque output, Nm / rpm | 167/4000 172/4400 181/4000 206/3200 181/5200 184/5200 186/5600 216/3200 226/3600 240/4800 265/3200 |
| Fuel type | 95 |
| Euro standards | — |
| Weight, kg | 230 (RB20DE) 245 (RB20DET) |
| Fuel consumption, L/100 km (for Fairlady 200ZR) — city — highway — combined |
— — 11.0 |
| Oil consumption, gr/1000 km | up to 500 |
| Recommended engine oil | 0W-30 / 5W-30 / 5W-40 / 10W-30 / 10W-40 |
| Engine oil capacity, liter | 4.2 |
| Oil change interval, km | 15000 (better 7500) |
| Normal engine operating temperature, °C | ~90 |
| Engine lifespan, km — official information — real |
— 400+ |
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