Toyota Type B engine
|1937 to 1955|
|Displacement||3,386 cc (3.4 L; 206.6 cu in)|
|Cylinder bore||84.1 mm (3.3 in)|
|Piston stroke||101.6 mm (4.0 in)|
|Cylinder block alloy||iron|
|Cylinder head alloy||iron|
|Power output||62-82 HP|
The 3,386 cc (3.4 L; 206.6 cu in) Type B was produced from 1937 through 1955 as a more technically advanced version of the Type A. The design was based on the Chevrolet 207 engine, and built under license but with metric dimensions and minor revisions to suit the local market. It had a four-bearing crank and shaft-mounted rocker arms, as did the Chevrolet engine.
Production of the B engine installed in large trucks had commenced when the Koromo Plant began operation in November 1938. The maximum output of this engine when installed in a 2-ton Model GB truck was 75 hp at 3,000 rpm. Subsequently, the engine was improved to 78 hp at 3,000 rpm in January 1940. The 78-hp B engine was also installed in the 4-ton Model KB truck developed in 1942 and the simplified Model KC (developed in 1943 while the war was going on). The output of the B engine installed in the Model BM truck launched in 1947 was 82 hp at 3,000 rpm.
The Type B was succeeded by the similar 3.9 L Type F in 1955. The Type F is based on the larger G.M.C. 1939-63 L6 OHV engine in the same way that the Type A and Type B were based on the Chevrolet engines of their times.
An unrelated 4-cylinder diesel engine introduced in the 1970s was also called the Type B.
Many parts were interchangeable between the Type A, Type B and Type C engines (e.g. pistons, valves, rods). Many of the same parts were also interchangeable with the Chevrolet Stovebolt engine, from which it was derived.
- AC sedan
- GB truck
- 1951-1955 BX truck (82 PS)
- BJ Jeep (later renamed the Land Cruiser)
- BH26 Police Patrol Car
- BH28 Ambulance