Toyota B engine

The Toyota B engine family was a series of inline-four diesel engines.

Toyota also had a 3.4 L (3389 cc) inline-six gasoline engine from 1937 to 1947 that was also called the B engine. The earlier engine was used in early Toyota cars and trucks and in the first version of the Land Cruiser when it was known as the BJ Jeep. The later engine was used in later versions of the Land Cruiser. The two engines are unrelated and were not made at the same time.

Toyota made 5 generations of the B family engines, each one identified with a number before the B letter. Also, Toyota uses a series of letters to identify technical improvements to their engines:

- The number 1 (one) before the number of the engine model means that the engine uses direct injection, otherwise, indirect injection

- The F letter after the B letter means that the engine is multivalvular. Since the B family are inline-fours, that means that the engine uses 16 valves.

- The T letter, means that the engine is turbocharged

- The E letter, means that the engine is electronically controlled engine control unit (ECU)

For example, the 15B-FTE Engine is the fifth generation of the B engines, comes with 16 valves, is turbocharged, direct-injected and uses an ECU.

Features at a glance

B

The B is a 3.0 L inline-four eight-valve OHV diesel engine. Compression ratio is 21:1. Output is 80 hp (60 kW) at 3,600 rpm with 141 lb·ft (191 N·m) of torque at 2,200 rpm, although later versions claim 85 PS (63 kW).

Applications

• Land Cruiser 40
• Dyna 3rd, 4th, 5th generation
• Toyoace 5th generation
• Daihatsu Delta V9/V12-series
• 1978-19?? Hino Ranger 2 (V10)^[1]

2B

The 2B is a 3.2 L inline 4 eight valve OHV diesel engine. Compression ratio is 21:1. Output is 93 hp (69 kW) at 2200 rpm with 159 ft·lbf (215 N·m) of torque at 2200 rpm.

Applications

• Land Cruiser (BJ41/44 JDM)
• Coaster (BB10/11/15)

3B

The 3B is a 3.4 L inline 4 eight valve OHV diesel engine. Compression ratio is 20:1. Output is 90 hp (67 kW) at 3500 rpm with 160 ft·lbf (217 N·m) of torque at 2000 rpm.

Applications

• Dyna 4th, 5th, 6th generation
• Toyoace 4th, 5th generation
• Landcruiser 40/60/70
• Coaster 2nd, 3rd generation

4B

The 4B is a 3.7 litre inline-four eight-valve OHV diesel engine of the swirl chamber type. A direct injection version later appeared, called the 14B.

11B

Same as the B but with direct injection. Power is 90 PS (66 kW) and max torque is 21.0 kg·m (206 N·m; 152 lb·ft).

13B

Same as the 3B but with direct injection. Output for 1985 versions is 100 PS (74 kW) and 24.0 kg·m (235 N·m; 174 lb·ft).^[2]

13B-T

The 13B-T is a turbocharged version of the 13B engine, with a compression ratio of 17.6:1. Output is 120 hp (89 kW) at 3,400 rpm with 159 ft·lbf (217 N·m) of torque at 2,200 rpm. The later "LASRE" version has 130 PS (96 kW) at 3,400 rpm and 30.0 kg·m (294 N·m; 217 lb·ft) at 2,000 rpm.^[2]

Applications

• Land Cruiser (BJ71&74)

14B

Same as the 4B but with direct injection. The 14B is a 3.7 liter inline-four eight-valve OHV direct injection diesel engine.^[3] Compression ratio is 18:1. Output is 98 hp (72 kW) at 3,400 rpm with 177 lb·fts (240 N·m) of torque at 1,800 rpm.

Applications

• Toyota Bandeirante
• Daihatsu Delta V11-series

14B-T

The 14B-T is a turbocharged version of the 14B engine.

Applications

• Toyota Dyna/Toyoace

15B

15B-F

The 15B-F is a 4.1 L (4104 cc) inline 4 cylinder, sixteen valve, OHV, direct injection diesel engine (same configuration as the 15B-FTE but no turbo and intercooler). Bore is 108 mm and stroke is 112 mm. Output is 86 kW (115 hp) at 3200 rpm and 290 N·m (214 ft·lbf) of torque at 2000 rpm.

Applications

• 1993-1999 Coaster (4×4 BB58)

15B-FT

The 15B-FT is a 4.1 L (4104 cc) inline 4 cylinder, sixteen valve, OHV, mechanical injection, turbo, intercooled diesel engine. Bore is 108 mm and stroke is 112 mm. Output is 101 kW (136 hp).

Applications

• 1999-2003 Coaster (4×4 BB58)

15B-FTE

The 15B-FTE is a 4.1 L (4104 cc) inline 4 cylinder, sixteen valve, OHV, electronic direct injection, turbo, intercooled diesel engine. Bore is 108 mm and stroke is 112 mm, with a compression ratio of 17.8:1. Output is 114 kW (153 hp) at 3200 rpm with 382 N·m (282 ft·lbf) of torque at 1800 rpm.

Applications

• Mega Cruiser
• 2003-2006 Coaster (BB50)

References