Austin-Healey 100-Six (BN4) (1956-57)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
Bore & Stroke |
79.4mm x 88.9mm |
Displacement |
2639cc |
Firing order |
1,5,3,6,2,4 |
Oil pressure (hot) |
55 – 60 lb./sq. in |
Fuel Supply
Carburetor |
Twin SU H4 |
Choke |
1½ |
Main Jet |
0.090″ |
Needles |
AJ |
Valving
Intake tappet clearance |
0.012″ (hot) |
Exhaust tappet clearance |
0.012″ (hot) |
Valve-timing indication |
Marked gear teeth |
Intake valve opens |
5° BTDC (Timing clearance 0.0234″) |
Ignition
Breaker gap |
0.014″ – 0.016″ |
Plug gap |
0.024″ – 0.026″ |
Ignition timing indication |
Pulley and pointer |
Ignition timing |
6° BTDC |
Clutch
Clutch type |
Borg & Beck 9″ dia |
Clutch linings |
Friction area 36.3 x 2 sq. in |
Brakes
Brake type |
Girling |
Brake linings |
2½ x 20.4 x (0.167″ – 0.174)” |
Wheel Alignment
Toe-In |
1⁄16″ to 1⁄8″ |
Camber |
1° |
Caster angle |
2° |
King pin angle |
6½° |
Keyword: Austin-Healey 100-Six (BN4) (1956-57)