The B-type engine was a compact 4-cylinder diesel engine that was developed for the Land Cruiser, and also used on the Dyna truck and Coaster microbus. The B-type did not use any particular special technology, but was developed with the idea of matching it to the different types of vehicles, and to have a good base for future development. Its potential was demonstrated in extending the bore, as well as through fuel-injection systems.
As shown to the right, the model changes from the 40-series to the 60-series were accompanied by engine evolution and increased bore from the B to the 2B, and then to the 3B-type. Eventually the 70-series emerged with the 13B-T-type direct-injection turbo engine. In this process active progress was also made in meeting emissions regulations.

» B

Cylinder	In-line 4 Diesel OHV 2-Valve
Bore x Stroke	95.0 x 105.0
Displacement	2,977cc
Compression Ratio	21.0
Max Power	85PS/3,600rpm
Max Torque	20.0kgm/2,200rpm
Using Model	BJ40(V), BJ43

 

» 2B

Cylinder	In-line 4 Diesel OHV 2-Valve
Bore x Stroke	98.0 x 105.0
Displacement	3,168cc
Compression Ratio	22.0
Max Power	93PS/3,500rpm
Max Torque	22.0kgm/2,200rpm
Using Model	BJ41(V), BJ44(V)

 

» 3B

Cylinder	In-line 4 Diesel OHV 2-Valve
Bore x Stroke	102.0 x 105.0
Displacement	3,431cc
Compression Ratio	20.0
Max Power	98PS/3,500rpm
Max Torque	23.0kgm/2,200rpm
Using Model	BJ42(V), BJ46(V), BJ60V, BJ61V, BJ70V, BJ73V

 

» 13B-T

Cylinder	In-line 4 Diesel OHV 2-Valve Turbo
Bore x Stroke	102.0 x 105.0
Displacement	3,431cc
Compression Ratio	17.6
Max Power	120PS/3,400rpm
Max Torque	29.0kgm/2,000rpm
Using Model	BJ71V, BJ74V