Austin Big Seven (1938-39)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
| Bore & Stroke | 56.77mm x 88.9mm |
| Displacement |
900cc
|
| Firing order | 1,3,4,2 |
| Oil pressure (hot) | 25 lb./sq. in. |
Fuel Supply
| Carburetor | Zenith |
| Choke |
23
|
| Main |
90
|
| Compensating |
50
|
| Slow running |
60
|
Valving
| Intake tappet clearance |
0.004″ (hot)
|
| Exhaust tappet clearance |
0.004″ (hot)
|
| Valve-timing indication | Flywheel |
| Intake valve opens | TDC |
Ignition
| Breaker gap | 0.012″ |
| Plug gap | 1936=0.015″ – 0.018″ 1937=0.018″ – 0.020″ |
| Ignition timing indication | On Flywheel |
| Ignition timing |
1936=7⁄8” BTDC (max advance)
1937=TDC |
Clutch
| Clutch type | Single Dry Plate |
| Clutch linings |
Borg & Beck
|
Brakes
| Brake type |
Girling
|
| Brake linings |
Wheel Alignment
| Toe-In | 1⁄8“ |
| Camber | 1° |
| Caster angle | 5° |
| King pin angle |
6¼°
|
