The Toyota H engine was first produced in 1967 but did not reach road cars until 1972. The 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 3.6L (3,576cc) inline 6, 12-valve OHV diesel engine. Bore is 88mm and stroke is 98mm, with a compression ratio of 21:1. Output is 91 to 95PS (67 to 70kW) at 3,600rpm with 20.8 to 22.0kg⋅m (204 to 216N⋅m; 150 to 159lb⋅ft) of torque at 2,200rpm.

Applications

2H

The 2H is a 4.0L (3,980cc) inline 6, 12 valve OHV indirect injection diesel engine. Bore is 91mm and stroke is 102mm, with a compression ratio of 20.7:1. Output is 105PS (77kW) at 3,500rpm - later production years 107hp (80kW) with 177lb·ft (240 N·m) of torque at 2,000rpm. This engine weighs 330kg (728lb) in European trim from 1985. Compared to its predecessor, the 2H proved to be much more reliable.

Applications

12H-T

The 12H-T is a 4.0L (3,980cc) inline 6, 12 valve OHV turbocharged direct injection diesel engine. Bore is 91mm and stroke is 102mm, with a compression ratio of 18.6:1. Output is 136PS (100kW; 134hp) at 3500rpm with 315N⋅m (232lb⋅ft) of torque at 1,800rpm, on the stock configuration of 7PSI of boost.