Toyota H engine
{{Single source|date=January 2019}}
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. {{Infobox automobile engine
| name = Toyota H engine
| oilsystem = Wet sump
| coolingsystem = Water-cooled
| power = {{Convert|91-138|PS|hp kW|0|abbr=on|lk=on}}
| idle = 650-750 rpm
| redline =
| timing = Timing gears
| compression = 18.6:1-22.0:1
| stroke = {{convert|98|mm|2|abbr=on}}
{{convert|102|mm|2|abbr=on}}
| bore = {{convert|88|mm|2|abbr=on}}
{{convert|91|mm|2|abbr=on}}
| displacement = {{convert|3576|cc|L|1|abbr=on|disp=flip}}
{{convert|3980|cc|L|1|abbr=on|disp=flip}}
| fuelsystem = Mechanical fuel injection
Direct injection
| image =
| fueltype = Diesel
| turbocharger = Toyota CT26 on 12H-T
| head = Cast iron
| valvetrain = OHV with 2 valves per cylinder
| production = 1967-1990
| configuration = Straight-6
| manufacturer = Toyota Motor Company
| caption = A Toyota 2H engine installed in the HJ47 Land Cruiser.
| torque = {{convert|205-313|Nm|kg.m lbft|0|abbr=on|lk=on}}
| predecessor = Toyota D engine
| successor = Toyota HZ engine
| block = Cast iron
}}
H
The H is a 3.6 L (3,576 cc) inline 6, 12-valve OHV diesel engine.{{cite journal | journal = 月刊自動車 [The Motor Monthly] | ref = MM69.8 | title = '69 商業車: ニューモデル |trans-title= '69 commercial vehicles: New models | language = Japanese | page = 122 | volume = 11 | number = 8 |date=August 1969 | id = 3439 }} Bore is 88 mm and stroke is 98 mm, with a compression ratio of 21:1. Output is {{convert|95|PS|kW|0|abbr=on}} at 3,600 rpm with {{convert|22.0|kgm|Nm lbft|abbr=on}} 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 {{convert|105|PS|kW|0|abbr=on}} 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 {{convert|330|kg|lb|0|abbr=on}} in European trim from 1985.{{cite magazine | ref = AG140 | magazine = De AutoGids | number = 140 | volume = 6 | page = 116 | title = Nieuw in 1985 (1) | trans-title = New for 1985 (1) | editor-first = Etienne | editor-last = Visart | language = nl-be | date = 1985-02-07 | publisher = Uitgeverij Auto-Magazine | location = Brussels, Belgium }} Compared to its predecessor, the 2H proved to be much more reliable.
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.{{Cite web |date=2019-05-24 |title=Toyota 12H-T (4.0 L) turbo diesel engine: specs and review, service data |url=https://www.engine-specs.net/toyota/12h-t.html |access-date=2022-06-18 |website=Engine Specs |language=en-US}}
- Toyota Land Cruiser HJ61
- Toyota Coaster HB20, 30