The Jinlang 1P57QMJ-B is a 149.6 cc (9.13 cu-in) single cylinder, 4-stroke, forced air-cooled/oil-cooled internal combustion motorcycle engine, manufactured by Zhejiang Jinlang Power Co. LTD.
The 1P57QMJ-B engine cylinder bore is 57.4 mm (2.26 in) and the piston stroke is 57.8 mm (2.28 in) and compression ratio rating is 9.5:1. The Jinlang 1P57QMJ-B produced 8.3 PS (6.1 kW; 8.2 HP) at 7,500 rpm of maximum horsepower and 9.3 Nm (0.95 kg·m; 6.9 ft·lb at 6,000 rpm of torque. Minimum idling speed 1,700 rpm.
General information
| Engine Specifications | |
| Model | Jinlang 1P57QMJ-B |
| Type | Four-stroke, single cylinder |
| Displacement | 149.6 cc (9.13 cu-in) |
| Max. horsepower | 8.3 PS (6.1 KW; 8.2 HP) at 7,500 rpm |
| Max. torque (crank PTO) | 9.3 Nm (0.95 kg·m; 6.9 ft·lb at 6,000 rpm |
| Cooling system | Forced-air |
| Ignition system | Capacitance discharge ignition (CDI) |
| Lubricating system | Splash |
| Starting system | Kick |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
Dimensions and Weight
| JL1P57QMJ-B | |
| Length, mm (in) | 720 (28.3) |
| Width, mm (in) | 450 (17.7) |
| Height, mm (in) | 330 (13.0) |
| Dry weight, kg (lb) | 28.5 (62.8) |
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