Riley 12 Hp (1939-40)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
| Bore & Stroke | 69mm x 100mm |
| Displacement |
1496cc
|
| Firing order |
1,2,4,3
|
| Oil pressure (hot) |
440 – 45 lb./sq. in. at 40 mph
|
Fuel Supply
| Carburetor |
SU
|
| Choke |
No. 3
|
| Standard |
SV needle
|
| Sprite series |
CC
|
Valving
| Intake tappet clearance |
0.004″ (hot)
|
| Exhaust tappet clearance |
0.004″ (hot)
|
| Valve-timing indication | – |
| Intake valve opens | TDC |
Ignition
| Breaker gap | 0.010″-0.012″ |
| Plug gap | 0.030″ |
| Ignition timing indication |
–
|
| Ignition timing |
5° ATDC (fully retarded)
|
Clutch
| Clutch type | Borg & Beck Single Dry Plate |
| Clutch linings | Special |
Brakes
| Brake type |
Girling Mechanical
|
| Brake linings |
Ferodo
|
Wheel Alignment
| Toe-In | 1⁄8“ |
| Camber | 1¾° |
| Caster angle | 3¼° |
| King pin angle | 8° |
