 |
| Engine | V 2 (45º vee) | Straight 2 | Straight 2 | Straight 4 | Straight 4 | |
|
| Valve train | Atmospheric/Automatic Inlet Valve | overhead inlet, side exhaust | overhead inlet, side exhaust | Side valves | Overhead valves | |
|
| Valves | 2 valves per cylinder
4 total valves | 2 valves per cylinder
4 total valves | 2 valves per cylinder
4 total valves | 2 valves per cylinder
8 total valves | 2 valves per cylinder
8 total valves | |
|
| Displacement | 34 cu in | | | 159 cu in | 69 cu in | |
|
| Bore x Stroke | 2 in x 4 in
0.6 ratio | | | 3 in x 5 in
0.74 ratio | 2 in x 4 in
0.71 ratio | |
|
| Compression ratio | | | | | 6.50:1 | |
|
| Maximum power | 1.50 hp | | | 30 hp @ 1600 rpm | 32 hp @ 4000 rpm | |
|
| Fuel | | | | | Petrol | |
|
| Main bearings | 2 | 2 | 2 | 3 | | |
|
| Construction | Cast iron block &
Cast iron head | Cast iron block &
Cast iron head | Cast iron block &
Cast iron head | Cast iron block &
Cast iron head | | |
|
| Coolant | Water | Water | Water | Water | Water | |
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