| Toyota R engine | |
|---|---|
 Modified 18R-G engine in a 1974 Toyota Corona Hardtop | |
| Overview | |
| Manufacturer | Toyota |
| Production | 1953–1997 |
| Layout | |
| Configuration | Inline-four |
| Cylinder block material | Cast Iron |
| Cylinder head material | Cast Iron Aluminium |
| Valvetrain | OHV 2 valves per cyl SOHC 2 valves per cyl DOHC 2 valves per cyl |
| Valvetrain drive system | Timing Chain |
| Compression ratio | 7.5:1-10.0:1 |
| Combustion | |
| Turbocharger | Hitachi CT20 on 22R-TE only |
| Fuel system | Carburetor Multi-port fuel injection |
| Fuel type | Gasoline |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 45–101 kW (61–137 PS; 60–135 hp) |
| Torque output | 108–234 N⋅m (80–173 lb⋅ft) |
The Toyota R family was a series of inline-four gasoline automobile engines. Designed for longitudinal placement in such vehicles as the Celica and Hilux and in production from 1953 through 1997, usage faded out as many of Toyota's mainstream models moved to front-wheel drive. Overhead cam (OHC) versions featured a chain-driven camshaft.