Toyota H engine

The Toyota H engine was first produced in 1967 but did not reach road cars till 1972. It is not a successor to the older and larger Toyota D engine.

H engine was then replaced by the 2H engine and the 12H-T turbo engine. It was succeeded by the more advanced SOHC HZ series engine.

H
The H is a 3.6 L (3,576 cc) inline 6, 12-valve OHV diesel engine. Bore is 88 mm and stroke is 98 mm, with a compression ratio of 21:1. Output is 95 PS at 3,600 rpm with 22.0 kgm of torque at 2,200 rpm.

Applications
 * Toyota Land Cruiser HJ45
 * Toyota Dyna HU15 HU30
 * Toyota Weapon carrier HQ15

2H
The 2H is a 4.0 L (3,980 cc) inline 6, 12 valve OHV indirect injection diesel engine. Bore is 91 mm and stroke is 102 mm, with a compression ratio of 20.7:1. Output is 105 PS at 3,500 rpm - later production years 107 hp (80 kW) with 177 lb·ft (240 N·m) of torque at 2,000 rpm. This engine weighs 330 kg in European trim from 1985. Compared to its predecessor, the 2H proved to be much more reliable, running 1 million kilometers or more.

Applications
 * Toyota Land Cruiser HJ47, HJ60, HJ75
 * Toyota Dyna HU20, 30, 40, 50
 * Toyota Coaster HB20, 30

12H-T
The 12H-T is a 4.0 L (3,980 cc) inline 6, 12 valve OHV turbocharged direct injection diesel engine. Bore is 91 mm and stroke is 102 mm, with a compression ratio of 18.6:1. Output is 134 hp (100 kW) at 3500 rpm with 232 lb·ft (315 N·m) of torque at 1,800 rpm, on the stock configuration of 7PSI of boost.
 * Toyota Land Cruiser HJ61
 * Toyota Coaster HB20, 30