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°
|
