Datsun sidevalve engine
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- 54 mm (2.13 in)
- 55 mm (2.17 in)
- 56 mm (2.20 in)
- 60 mm (2.36 in)
| Datsun Type 7/10 engine | |
|---|---|
 Type 7 engine from a 1939 Datsun Type 17 | |
| Overview | |
| Manufacturer | |
| Layout | |
| Configuration | Naturally aspirated Inline-4 |
| Displacement | 0.5–0.9 L; 30.2–52.5 cu in (495–860 cc) |
| Cylinder bore |
|
| Piston stroke |
|
| Valvetrain | Side valve |
| Compression ratio | 8.0:1 |
| Combustion | |
| Fuel system | Single Carburetor |
| Fuel type | Petrol |
| Cooling system | Water-cooled |
| Output | |
| Power output | 10–27 PS (7–20 kW) |
| Torque output | 48 N⋅m (35 lb⋅ft) (Type 10) |
| Dimensions | |
| Dry weight | 137.5 kg (303 lb) |
| Chronology | |
| Successor | Nissan C engine OHV |
Nissan's sidevalve engines were internal combustion automotive engines used in a variety of vehicles. They were based on the Austin 7 engine, with which they shared the 76 mm (2.99 in) stroke. The series began with a 495 cc iteration for the 1930 Datson Type 10 and ended with the 860 cc Type 10 engine that was used until 1964 for light commercial vehicles. Later versions were called the B-1. It was replaced in 1957 by the OHV Nissan C engine that was essentially a de-stroked version of another Austin design, the BMC B-Series.
Applications
The displacement of the original version was kept beneath a half litre, since driver's licenses were not required for such cars after a ministerial decision of 1930.[1] The engine was a square design, with a bore and stroke of 54 mm × 54 mm (2.13 in × 2.13 in). Maximum power was 10 PS (7.4 kW) at 3700 rpm.[2]
- 1930-1931 Datson Type 10
- 1932 Datsun Type 11
DAT 747 cc
For 1933, the rule regarding drivers' licenses was changed so that cars of up to 750 cc could be driven without a license. Accordingly, Datsun enlarged their engine to displace 747 cc (0.7 L; 45.6 cu in) from a bore and stroke of 56 mm × 76 mm (2.20 in × 2.99 in). These dimensions are the same as those of the Austin 7. It produced 12 PS (9 kW) at 3000 rpm, later increased to 14 PS (10 kW).
Applications
- 1933-1934 Datsun Type 12
- 1934-1935 Datsun Type 13/13T
Type 7
This 722 cc (0.7 L; 44.1 cu in) engine is a flat-head side valve automobile engine, a supposedly new design that was slightly smaller but also slightly more powerful than the earlier DAT engine. Bore and stroke were nearly the same as for the earlier version, at 55 mm × 76 mm (2.17 in × 2.99 in). Power is 15 PS (11.0 kW); in 1936 the engine was upgraded to produce 16 PS (11.8 kW). Postwar cars again claimed 15 PS (11.0 kW), at 3600 rpm.[3] In 1950, power was increased again to 20 PS (14.7 kW).
Applications
- 1935-1936 Datsun Type 14/14T
- 1936-1937 Datsun Type 15
- 1936-1938 Datsun Type 15T
- 1937-1938 Datsun Type 16
- 1938 Datsun Type 17
- 1938 Datsun Type 17T
- 1946 Datsun 1121
- 1947-1949 Datsun 2124
- 1947-1948 Datsun DA
- 1949 Datsun 3135
- 1949-1950 Datsun DB-2/DW-2
- 1950 Datsun DS
- 1950-1951 Datsun 4146 Truck
- 1951-1952 Datsun DS-2 Thrift
- 1951-1953 Datsun DB-4/DW-4/DV-4
- 1951-1953 Datsun 5147 Truck
- 1952-1953 Datsun DS-4 Thrift
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