Austin A90 Atlantic (1949-51)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
Bore & Stroke | 87.3mm x 111.1mm |
Displacement | 2660cc |
Firing order | 1,3,4,2 |
Oil pressure (hot) | 50 – 55 lb./sq. in. |
Fuel Supply
Carburetor | Twin SU H4 (opt. Stromberg DBA42) |
Bypass | SU: N/A (Stromberg: 0.046) |
Main | SU: 0.090″ (Stromberg: 0.063) |
Idle bleed | SU: N/A (Stromberg: 75) |
Pump | SU: N/A (Stromberg: 68) |
Needle | SU: Needle FT (Stromberg: N/A) |
Valving
Intake tappet clearance | 0.015″ (hot) (0.012″ on later models with one-piece rocker) |
Exhaust tappet clearance | 0.015″ (hot) (0.012″ on later models with one-piece rocker) |
Valve-timing indication | Marks on timing wheel |
Intake valve opens | 5° BTDC at 0.021″ clearance |
Ignition
Breaker gap | 0.010″ – 0.012″ |
Plug gap | 0.025″ |
Ignition timing indication | Flywheel |
Ignition timing |
6° BTDC |
Clutch
Clutch type | Borg & Beck Single Dry Plate |
Clutch linings |
Brakes
Brake type | Girling 2LS Hydromech. |
Brake linings |
Wheel Alignment
Toe-In | 1⁄16” to 1⁄8“ |
Camber | 1° |
Caster angle | 1¼° |
King pin angle |
6½° |
Keyword: Austin A90 Atlantic (1949-51)