Jowett Jupiter Mark 1a (1953)
The Car
Coming soon
The Specs
Below are the technical specifications and any performance numbers we could get.
Engine
| Bore & Stroke | (2.855″) 72.5mm x (3.545″) 90mm |
| Displacement |
1485cc
|
| Firing order |
1423
|
| Oil pressure (hot) |
65- 75 lb./sq. in.
|
Fuel Supply
| Carburetor | Twin Zenith 30VM |
| Choke |
27mm
|
| Main |
115
|
| Compensating |
60
|
| Progression |
120
|
| Slow Running |
45
|
Valving
| Intake tappet clearance |
0.003″ (cold)
|
| Exhaust tappet clearance |
0.006″ (cold)
|
| Valve-timing indication | Sprockets and flywheel |
| Intake valve opens |
12° BTDC
|
Ignition
| Breaker gap | 0.014″ – 0.016″ |
| Plug gap | 0.020″ – 0.025″ |
| Ignition timing indication |
Flywheel
|
| Ignition timing |
3⁄8” ATDC
|
Clutch
| Clutch type | Borg & Beck Dry Plate (7¼) |
| Clutch linings |
Woven yarn
|
Brakes
| Brake type |
Girling Fully Hydraulic
|
| Brake linings |
3⁄16” thick x 8¾ long
|
Wheel Alignment
| Toe-In | 0″ – 1⁄8” (toe-out) |
| Camber | 0° |
| Caster angle | 1¼ |
| King pin angle |
10°
|
