Riley 2½ Litre (1951-53)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
| Bore & Stroke | 80.5mm x 120mm |
| Displacement |
2442cc
|
| Firing order |
1,2,4,3
|
| Oil pressure (hot) |
40 – 45 lb./sq. in. at 50 mp
|
Fuel Supply
| Carburetor |
SU horizontal H4 (2)
|
| Needle |
EE
|
Valving
| Intake tappet clearance |
0.003″ (0.015″ from engine No. RMB1) (hot)
|
| Exhaust tappet clearance |
0.004″ (0.015″ from engine No. RMB1) (hot)
|
| Valve-timing indication | Chain wheels |
| Intake valve opens | 12° BTDC (Later models 12°) |
Ignition
| Breaker gap | 0.010″-0.012″ (later models: 0.014″ – 0.016″) |
| Plug gap | 0.025″ |
| Ignition timing indication |
–
|
| Ignition timing |
4° – 8° BTDC
|
Clutch
| Clutch type | Borg & Beck Single Dry Plate |
| Clutch linings | Borg & Beck RYZ |
Brakes
| Brake type |
Girling Hydro-Mechanica
|
| Brake linings |
Mintex M14
|
Wheel Alignment
| Toe-In | Parallel |
| Camber | 1° |
| Caster angle | 3° |
| King pin angle | 11° |
