Engine specs (500SL)
Twin-cylinder, 90° L-type configuration, 4-stroke, air-cooled, mounted on closed double cradle frame.
| Bore | 74mm |
| Stroke | 58mm |
| Capacity | 498.9cc |
| Compression ratio | 9.5:1 |
| Max power | 45HP @ 9050 rpm |
| Max torque | 40.2 Nm @ 6300 rpm |
| Max engine speed | 9500 rpm |
VALVE TIMING
| Induction | before TDC | 50° |
| after BDC | 80° | |
| Exhaust | before BDC | 75° |
| after TDC | 45° |
Operation and clearance of tappets, cold motor condition:
| Intake and exhaust | opening rocker arm | 0.10mm (0.0039″) |
| closing rocker arm | 0.00%0.02mm (0.00%0.0008″) |
