Toyota 2H

Toyota 2HThe Toyota 2H is a 4.0 L (3,980 cc, 242.9 cu·in) six cylinders, four-stroke cycle water-cooled naturally aspirated internal combustion diesel engine, from the Toyota H-family, manufactured by the Toyota Motor Corporation.

The 2H diesel engine has a cast-iron cylinder block with 91.0 mm (3.58 in) cylinder bores and a 102.0 mm (4.02 in) piston stroke. Compression ratio rating is 20.7:1. The motor has a cast iron cylinder head with the overhead valves (2 per cylinder, 12 in total).

The Toyota 2H engine produced 105 PS (77 kW; 103 HP) at 3,500 rpm or 109 PS (80 kW; 107 HP) at 3,500 rpm of maximum horsepower and 240 N·m (24.5 kg·m, 176.9 ft·lb) at 2,000 rpm of peak torque.

The breakdown of the engine code is as follows:

  • 2 – 2-nd generation engine
  • H – Engine family

General information

Engine Specifications
Engine code2H
LayoutStraight-6, vertical
Fuel typeDiesel
Production
Displacement4.0L, 3,980 cc (242.9 cu in)
Injection pumpMechanical
Power adderNone
Horsepower net 105 PS (77 kW; 103 HP) at 3,500 rpm
109 PS (80 kW; 107 HP) at 3,500 rpm
Torque output 240 N·m (24.5 kg·m, 176.9 ft·lb) at 2,000 rpm
Firing order1-4-2-6-3-5
Dimensions (L x H x W):
Weight

Cylinder block

The cylinder block is made of cast iron. The crankshaft is supported by 7 bearings. The crankshaft bearings are made of aluminum alloy. Pistons are made of highly temperature-resistant aluminum alloy.

The cylinder bore is 91.0 mm (3.58 in), piston stroke is 102.0 mm (4.02 in) and compression ratio rating is 20.7:1.

Cylinder block
Cylinder block alloyCast iron
Compression ratio:20.7:1
Cylinder bore:91.0 mm (3.58 in))
Piston stroke:102.0 mm (4.02 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:7
Cylinder bore inner diameter:91.000-91.030 mm (3.5827-3.5839 in)
Piston skirt diameter90.930-90.940 mm (3.5799-3.5803 in)
Piston ring groove:First0.097-0.137 mm (0.0038-0.0054 in)
Second0.060-0.100 mm (0.0024-0.0039 in)
Oil0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap:First0.200-0.440 mm (0.0079-0.0173 in)
Second0.200-0.440 mm (0.0079-0.0173 in)
Oil0.150-0.490 mm (0.0059-0.0193 in)
Piston pin outer diameter29.000-29.012 mm (1.1417-1.1422 in)
Connecting rod small end diameter (standard):29.008-29.020 mm (1.142-1.1425 in)
Crankshaft main journal diameter:69.980-70.000 mm (2.7551-2.7559 in)
Crankpin diameter:54.980-55.000 mm (2.1646-2.1654 in)
Crankshaft center distance:51.0 mm (2.01 in)

Main bearing cap tightening procedure and torque specs:

  • 136 Nm; 13.9 kg·m; 100 ft·lb

After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.

Connecting rod bearing nut

  • 88 Nm; 9.0 kg·m; 65 ft·lb

Crankshaft pulley bolt

  • 441 Nm; 45.0 kg·m; 325 ft·lb

Drive plate (A/T) fixing bolts

  • 98 Nm; 10.0 kg·m; 72 ft·lb

Flywheel (M/T) fixing bolts

  • 118 Nm; 12.0 kg·m; 87 ft·lb

Cylinder head

Cylinder head
Cylinder head alloyCast iron
Valve Arrangement:OHV
Valves:12 (2 valves per cylinder)
Intake valves diameter:
Exhaust valves diameter:
Intake valves length:120.7 mm (4.752 in)
Exhaust valves length:120.6 mm (4.748 in)
Intake valve stem diameter:8.973-8.989 mm (0.3533-0.3539 in)
Exhaust valves stem diameter:8.954-8.970 mm (0.3525-0.3531 in)
Valve spring free length: Inner: 44.3 mm (1.7441 in)
Outer: 48.1 mm (1.8937 in)
Camshaft journal diameter: 1: 51.151-51.170 mm (2.0138-2.0146 in)
2: 50.951-50.970 mm (2.0059-2.0067 in)
3: 50.751-50.770 mm (1.9981-1.9988 in)
4: 50.551-50.570 mm (1.9902-1.9901 in)
Camshaft lobe height (intake):41.900 mm (1.6496 in)
Camshaft lobe height (exhaust):42.298 mm (1.6653 in)

Head tightening procedure and torque specs:

  • 113 Nm; 11.5 kg·m; 83 ft·lb

Maintenance data

Valve clearance (Hot)
Intake valve0.20 mm (0.0079 in)
Exhaust valve0.36 mm (0.0142 in)
Compression pressure
Standard28.0 kg/m2 (2,750 kPa, 398 psi)
Minimun20.0 kg/m2 (1,960 kPa, 284 psi)
Compression differential limit between cylinders2.0 kg/m2 (196 kPa, 28 psi)
Oil system
Recommended engine oil10W-30 or 5W-30 (“CC”, “CD”)
Engine oil capacity Dry fill: 10.3 L (10.9 US qt, 9.1 Imp. qt)
With oil filter change: 9.7 L (10.3 US qt, 8.5 Imp. qt)
Without oil filter change: 8.1 L (8.6 US qt, 7.1 Imp. qt)
Oil pressure: At idle: 0.3 kg/m2 (29 kPa, 4.3 psi) or more
At 3,00 rpm: 2.5-6.0 kg/m2 (245-588 kPa, 36-85 psi)
Fuel system
Injection nozzle opening pressure: Reused: 105-125 kg/m2 (10,300-12,260 kPa, 1,493-1,780 psi)
New: 115-125 kg/m2 (11,280-12,260 kPa, 1,640-1,780 psi)
Idling M/T: 650 ± 50 rpm
A/T: 700 ± 50 rpm
Maximum speed:4,100-4,170 rpm

Vehicle applications

ModelYears Produced
Toyota Land Cruiser (HJ47, HJ60, HJ75)
Toyota Dyna (HU20, 30, 40, 50)
Toyota Coaster (HB20, 30)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

2 Comments

Leave a Reply

Your email address will not be published.


*