Armstrong Siddeley 16-hp Za, Zb, Zc, Zd (1938-39)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
| Bore & Stroke | 65mm x 100mm |
| Displacement |
1991cc
|
| Firing order | 1,5,3,6,2,4 |
| Oil pressure (hot) | 30 – 35 lb./sq. in. |
Fuel Supply
| Carburetor | Zenith 36 VEI-2 |
| Choke |
26
|
| Main |
120
|
| Compensating |
90
|
| Economy |
130
|
| Slow running |
60
|
| Progression |
140
|
| Needle seating |
2.5
|
Valving
| Intake tappet clearance |
0.006″ (cold)
|
| Exhaust tappet clearance |
0.008″ (cold)
|
| Valve-timing indication | Camshaft and crankshaft sprockets |
| Intake valve opens | 5° BTDC (Tappets at 0.0125″) |
Ignition
| Breaker gap | 0.012″ |
| Plug gap | 0.020″ |
| Ignition timing indication | Flywheel |
| Ignition timing |
½” ATDC (flywheel rim)
|
Clutch
| Clutch type | ASM Centrifugal, Single Dry Plate Newton Disc |
| Clutch linings | Newton Disc |
Brakes
| Brake type | Girling Mechanical |
| Brake linings |
11″d. x 1½” x 3⁄16“
|
Wheel Alignment
| Toe-In | 1⁄18″ |
| Camber | 2.5° |
| Caster angle | 3.5° |
| King pin angle | 7.5° |
