________________________________________________________________________________________
| Home / Car Engines / Toyota Engines / Toyota 1HD-FTE |
Toyota 1HD-FTE Engine Specifications
The Toyota 1HD-FTE is a 4.20 l (4,164 cc, 254.1 cubic inches) six
cylinders 4-stroke water-cooled turbocharged internal combustion diesel
engine, manufactured by the Toyota Motor Corporation.
The Toyota 1HD-FTE engine has a cast-iron block with 94 mm (3.7 in)
cylinder bores and a 100 mm (3.94 in) piston stroke for a capacity of
4,164 cc (254.1 cubic inches). Compression ratio rating is 18.8:1. The
motor has a cast iron cylinder head with a single overhead camshaft
(SOHC) with 24 valves which is mounted on a three-layer steel laminate
type head gasket.
The engine is based on the 1HD-FT, but it has new valve seats,
new pistons, an improved cooling system and an increased from 18.6:1 to
18.8:1 compression ratio. The engine is equipped with electronic
rotary fuel injection pump; central vertically mounted injectors and
Toyota CT26 turbocharger (for Toyota Land Cruiser 70- series) or Toyota
CT20B turbocharger with intercooler (for Toyota Land Cruiser
100-series).
The Toyota 1HD-FTE produced 205 PS (151 kW; 202 HP) at 3,400 rpm of
maximum power and 430 Nm (43.9 kgm; 317.3 ft-lb) at 3,200 rpm of maximum
torque (for Toyota Land Cruiser 100-series with intercooler).
Engine code identification:
1 - 1nd generation engine
HD - Engine family
F - Economy narrow-angle DOHC
T - Turbocharged
E - Electronic fuel injection
| GENERAL TECHNICAL DATA |
Engine model ............... 1HD-FTE
Cylinder layout ............... Straight-6, vertical
Fuel type ............... Diesel
Production ............... No data available
Total displacement ............... 4.2L, 4,164 cc (254.1 cubic inches)
Injection pump ............... Electronically-controlled
Power adder ............... Toyota CT26 or CT20B with intercooler
Rated power ............... 205 PS (151 KW; 202 HP) at 3,400 rpm
Torque output ............... 430 Nm (43.9 kgm; 317.3 ft-lb) at 3,200
rpm
Firing order ............... 1-4-2-6-3-5
Dimensions (L x H x W) ............... No data available
Weight ...............
| CYLINDER BLOCK |
The cylinder block has a monoblock high-strength cast-iron structure
with the seven-bearing-support system. The engine is equipped
with a forged crankshaft with seven forged journals and twelve balance
weights.
The 1HD-FTE motor has carbon-steel connecting rods and an aluminum alloy
piston for high strength, lightweight and good heat conductivity; two
compression and one oil control rings. The cylinder bore is 94 mm (3.7
in), piston stroke is 100 mm (3.94 in) and compression ratio rating is
18.8:1.
Cylinder block alloy ............... Cast iron
Compression ratio ............... 18.8:1
Cylinder bore ............... 94 mm (3.7 in)
Piston stroke ............... 100 mm (3.94 in)
Number of piston rings (compression / oil) ............... 2 / 1
Number of main bearings ............... 7
Cylinder bore inner diameter ............... 94.000-94.010 mm
(3.7001-3.7012 in)
Piston skirt diameter ............... 93.870-93.880 mm mm (3.6956-3.6960
in)
Piston ring groove ............... First ............... 0.070-0.110 mm
(0.0028-0.0043 in)
Second ............... 0.040-0.080 mm (0.0016-0.0031 in)
Oil ............... 0.030-0.070 mm (0.0012-0.0028 in)
Piston ring end gap ............... First ............... 0.270-0.300 mm
(0.0106-0.0130 in)
Second ............... 0.400-0.550 mm (0.0157-0.0216 in)
Oil ............... 0.200-0.500 mm (0.0079-0.0196 in)
Piston pin outer diameter ............... 33.000-33.012 mm
(1.2992-1.2997 in)
Piston pin bore diameter ............... 33.008-33.020 mm (12.995-1.3000
in)
Crankshaft main journal diameter ............... 66.994-57.000 mm
(2.7953-2.7955 in)
Crankpin diameter ............... 58.982-59.000 mm (2.3221-2.3228 in)
Crankshaft center distance ............... 50.0 mm (1.9685 in)
Main bearing cap tightening procedure and torque specs:
Step 1: 103 Nm; 10.5 kgm; 76 ft-lb
Step 2: Turn all bolts 90deg
After securing bearing cap bolts, make sure crankshaft turns smoothly by
hand.
Connecting rod bearing nut
Step 1: 37 Nm; 3.75 kgm; 27 ft-lb
Step 2: Turn all bolts 90deg
Crankshaft pulley bolt
430 Nm; 43.0 kgm; 317 ft-lb
Flywheel (M/T) or Drive plate (A/T) fixing bolts
127 Nm; 13.0 kgm; 94 ft-lb
| CYLINDER HEAD |
The 1HD-FTE has a one-piece high-strength cast iron cylinder head with
single (SOHC) high-quality carbon steel camshaft and aluminum rocker
arms. Each rocker uses bridges to actuate a pair of valves.
The camshaft is driven by a timing belt and gears. The timing gear train
included a hydraulic auto tensioner. Furthermore, the timing gear train
drove the oil pump, vacuum pump, steering gear pump, injection pump, and
camshaft.
The engine has OHV design with four valves per cylinder (24 valves in
total) two intake and two exhaust valves, which are made of special
heat-resistant steel. Intake valves are 33.0 mm (1.2992 in) in diameter,
and the exhaust valves are 30.5 mm (1.2007 in). Intake duration is
216deg and exhaust duration is 246deg.
The engine has an aluminum intake manifold and cast iron exhaust
manifold that was mounted on a five-layer steel laminate type exhaust
manifold gasket. The engine is equipped with the EGR system.
Cylinder head alloy ............... Cast iron
Valve Arrangement ............... OHV
Valves ............... 24 (4 valves per cylinder)
Intake valves diameter ............... 33.0 mm (1.2992 in)
Exhaust valves diameter ............... 30.5 mm (1.2007 in)
Intake valves length ............... 126.85-127.45 mm (4.9941-5.0177 in)
Exhaust valves length ............... 126.83-127.43 mm (4.9933-5.0169
in)
Intake valve stem diameter ............... 6.970-6.985 mm (0.2744-0.2750
in)
Exhaust valves stem diameter ............... 6.960-6.975 mm
(0.2740-0.2746 in.l
Camshaft journal diameter ............... 1st: 34.969-34.985 mm
(1.3767-1.3774 in)
Others: 27.986-27.998 mm (1.1018-1.1023 in)
Intake cam lobe height ............... 48.203-48.303 mm (1.8978-1.9017
in)
Exhaust cam lobe height ............... 50.734-50.834 mm (1.9974-2.0013
in)
Head tightening procedure and torque specs:
Step 1: 69 Nm; 7.0 kgm; 51 ft-lb
Step 2: Turn all bolts 90deg
Step 3: Turn all bolts 90deg
Camshaft bearing cap
25 Nm; 2.5 kgm; 18 ft-lb
| MAINTENANCE DATA |
Valve clearance (Cold)
Intake valve ............... 0.17-0.23 mm (0.007-0.009 in)
Exhaust valve ............... 0.47-0.53 mm (0.019-0.021 in)
Compression pressure
Standard ............... 35.0 kg/m2 (3,432 kPa, 498 psi) / 250 rpm
Minimum ............... 25.0 kg/m2 (2,452 kPa, 358 psi) / 250 rpm
Compression differential limit between cylinders ............... 5.0
kg/m2 (490 kPa, 71 psi) / 250 rpm
Oil system
Recommended engine oil ............... Semi Synthetic 10W-30 or 10W-40
(“CD” or higher: “CH”, “CI”)
Engine oil capacity ............... Dry fill: 12.1 L (12.8 US qt, 10.6
Imp. qt)
With oil filter change: 11.4 L (12.0 US qt, 10.0 Imp. qt)
Without oil filter change: 10.1 L (10.7 US qt, 8.9 Imp. qt)
Fuel system
Idling ............... 550-600 rpm
Max engine speed under no load ............... 4300-4500 rpm
Turbocharger CT20B
Turbocharging pressure ............... 0.49-0.69 kgf/cm2 (50-70 kPa,
7.0-9.8 psi)
Turbo pressure sensor voltage ............... 4.75-5.5 V
| VEHICLE APPLICATIONS |
Model ............... Years Produced
Toyota Land Cruiser (HDJ78) Troop Carrier ............... No data
available
Toyota Land Cruiser (HDJ79) ............... No data available
Toyota Land Cruiser (HDJ100) ............... No data available
Toyota Coaster (HDB50) ............... No data available
Toyota Coaster (HDB51) ............... No data available
________________________________________________________________________________________
________________________________________________________________________________________
| Engines Technical Specifications |