Singer Sm Roadster Series 4ad (1951)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
| Bore & Stroke |
73mm x 89.4mm |
| Displacement |
1497cc |
| Firing order |
1,3,4,2 |
| Oil pressure (hot) |
30 – 35 lb./sq. in. at 30 mph in top gear
|
Fuel Supply
| Carburetor |
Solex FAI D/D |
| Choke |
24 |
| Main |
125 |
| Air Correction |
230 |
| Pilot |
45 |
| Starter Petrol |
115 |
| Starter Air |
4 |
Valving
| Intake tappet clearance |
0.004″ (hot) |
| Exhaust tappet clearance |
0.006″ (hot) |
| Valve-timing indication |
¼ on flywheel rim |
| Intake valve opens |
10° BTDC |
Ignition
| Breaker gap |
0.012″ |
| Plug gap |
0.025″ |
| Ignition timing indication |
¼ on flywheel rim |
| Ignition timing |
4° – 5° BTDC |
Clutch
| Clutch type |
Borg & Beck Single Dry Plate 8A6G |
| Clutch linings |
– |
Brakes
| Brake type |
Girling Hydraulic Front; Mechanical Rear |
| Brake linings |
– |
Wheel Alignment
| Toe-In |
1⁄8” unladen |
| Camber |
1° laden |
| Caster angle |
2° laden |
| King pin angle |
7° laden |
