| Datsun Type 7/10 engine | |
| Configuration: | Naturally aspirated Inline-4 |
| Valvetrain: | Side valve |
| Fueltype: | Petrol |
| Fuelsystem: | Single Carburetor |
| Coolingsystem: | Water-cooled |
| Displacement: | NaNcc |
| Compression: | 8.0:1 |
| Power: | NaN0NaN0 |
| Torque: | 480NaN0 (Type 10) |
| Successor: | Nissan C engine OHV |
Nissan's sidevalve engines were based on the Austin 7 engine, with which they shared the 762NaN2 stroke. The series began with a 495 cc iteration for the 1930 Datson Type 10 and ended with the 860 cc Type 10 engine which was built until 1964 for light commercial vehicles. Later versions were called the B-1, before being replaced in 1957 by the OHV Nissan C engine that was essentially a de-stroked version of another Austin design this time the BMC B-Series.
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 NaN2NaN2. Maximum power was 101NaN1 at 3700 rpm.[2]
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 modified their engine which now displaced 7471NaN1 from a bore and stroke of NaN2NaN2. These dimensions are exactly the same as those of the Austin 7. It produced 120NaN0 at 3000 rpm, although this later increased to 140NaN0.
This 7221NaN1 engine is a flat-head side valve automobile engine, a supposedly new design which 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 NaN2NaN2. Power is ; in 1936 the engine was upgraded to produce . Postwar cars again claimed, at 3600 rpm. In 1950, power was increased again, to .
The Datsun Type 10 engine was a 8601NaN1 engine is a flat-head side valve automobile engine produced from 1952 through 1964. Bore and stroke was NaN2NaN2 in the undersquare British style. Later on, the engine's name was abbreviated to D-10.
Output was originally for the DC-3, but this increased to at 4000 rpm and 5.10NaN0 at 2400 rpm in 1953 thanks to an increased compression ratio of 6.5:1. The engine used a single carburetor. This engine was called the B-1 when installed in the 1958-1964 Datsun Cabstar; this version produces at 5200 rpm.[3]