The Jinlang J20 (JL 1P52QMI-8) is a 124.6 ml (7.8 cu-in) single cylinder, 4-stroke, forced air-cooled internal combustion motorcycle engine, manufactured by Zhejiang Jinlang Power Co. LTD.
The 1P52QMI-8 (J20) engine cylinder bore is 52.4 mm (2.06 in) and the piston stroke is 57.8 mm (2.28 in) and compression ratio rating is 9.5:1. The Jinlang 1P52QMI-8 produced 9.2 PS (6.8 kW; 9.1 HP) at 7,500 rpm of maximum horsepower and 9.0 Nm (0.92 kg·m; 6.64 ft·lb) at 6,000 rpm of torque. Minimal idling speed 1,600 rpm.
General information
| Engine Specifications | |
| Model | Jinlang J20 (JL 1P52QMI-8) |
| Type | Four-stroke, single cylinder |
| Displacement | 124.6 ml (7.8 cu-in) |
| Max. horsepower | 9.2 PS (6.8 KW; 9.1 HP) at 7,500 rpm |
| Max. torque (crank PTO) | 9.0 Nm (0.92 kg·m; 6.64 ft·lb) at 6,000 rpm |
| Cooling system | Forced-air |
| Ignition system | Capacitance discharge ignition (CDI) |
| Lubricating system | Splash |
| Starting system | Electric / kick |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
Dimensions and Weight
| JL 1P52QMI-8 | |
| Length, mm (in) | 660 (26.0) |
| Width, mm (in) | 460 (18.1) |
| Height, mm (in) | 310 (12.2) |
| Dry weight, kg (lb) | 25.0 (55.1) |
hi just purchased a royal alloy gt125 with your enginein it, i have no comprestion could you send me the specifications of what size of:piston rings/ valves / piston / thanh you much appreciated donnie from SCOTLAND