Toyota 1KZ-TE

Toyota 1KZ-TEThe Toyota 1KZ-TE is a 3.0 l (2,982 cc, 181.97 cu-in) four cylinders, four-stroke cycle water-cooled turbocharged internal combustion diesel engine, manufactured by the Toyota Motor Corporation since 1993 to 2003.

The 1KZ-TE engine has a cast-iron block with 96.0 mm (3.78 in) cylinder bores and a 103.0 mm (4.06 in) piston stroke for a capacity of 3.0 l. Compression ratio rating is 21.2:1. The engine has an aluminum alloy cylinder head with a single overhead camshaft (SOHC) two valves per cylinder, electronically controlled indirect fuel injection system ETCS-i (Electronic Throttle Control System) and water-cooled Toyota CT12B turbocharger with boost pressure up to 0.8 bar. The engine is equipped with the EGR system.

The Toyota first version of 1KZ-TE produced 130 PS (96 kW; 129 HP) at 3,600 rpm of horsepower and 332 Nm (33.9 kg·m; 245.0 ft·lb) at 2,000 rpm of torque. Redline is 4400 rpm. Later version with intercooler produced from 140 PS (103 kW; 138 HP) at 3,600 rpm to 147 PS (108 kW; 145 HP) at 3,600 rpm of horsepower and up to 343 Nm (35.0 kg·m; 253.1 ft·lb) at 2,000 rpm of torque.

The breakdown of the engine code is as follows:

  • 1 – 1nd generation engine
  • KZ – Engine family
  • T – Turbocharged
  • E – Electronic fuel injection

General information

Engine Specifications
Engine code1KZ-TE
LayoutStraight-4, vertical
Fuel typeDiesel
Production1993-2006
Displacement3.0 L, 2,982 cm 3 (181.97 cu in)
Injection pumpElectronically controlled
Power adderToyota CT12B
Horsepower net 130 PS (96 KW; 129 HP) at 3,600 rpm
140 PS (103 KW; 138 HP) at 3,600 rpm
147 PS (108 KW; 145 HP) at 3,600 rpm
Torque output
289 Nm (29.5 kg·m; 213.3 ft·lb) at 2,000 rpm
295 Nm (30.0 kg·m; 217.7 ft·lb) at 2,400 rpm
232 Nm (23.7 kg·m; 171.2 ft·lb) at 2,000 rpm
334 Nm (34.0 kg·m; 246.5 ft·lb) at 2,000 rpm
343 Nm (35.0 kg·m; 253.1 ft·lb) at 2,000 rpm
Firing (enjection) order1-3-4-2
Dimensions (L x H x W):
Weight

Cylinder block

The cylinder block has a monoblock high-strength cast-iron structure with the five-bearing-support system. The cylinder bores were plateau honed for more efficient piston ring sealing. The 1KZ-TE engine is equipped with a fully balanced steel crankshaft that has five main journals and operated on aluminum alloy bearings.

The connecting rods are made from lightweight carbon steel and each rod has an internal oil passage which supplied an oil gallery in the piston. The pistons are made from aluminum alloy and an FRM (fiber reinforced metal) top ring groove to improve wear resistance. Each piston is fitted with two compression and one oil control rings. The cylinder bore is 96.0 mm (3.78 in), piston stroke is 103.0 mm (4.06 in) and compression ratio rating is 21.2:1.

Cylinder block
Cylinder block alloyCast iron
Compression ratio:21.2:1
Cylinder bore:96.0 mm (3.78 in)
Piston stroke:103.0 mm (4.06 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:5
Cylinder bore inner diameter:96.000-96.010 mm (3.7795-3.7799 in)
Piston skirt diameter95.940-95.950 mm (3.7772-3.7776 in)
Piston ring groove:First0.060-0.110 mm (0.0024-0.0043 in)
Second0.060-0.100 mm (0.0024-0.0039 in)
Oil0.020-0.060 mm (0.0009-0.0024 in)
Piston ring end gap:First0.350-0.570 mm (0.0138-0.0224 in)
Second0.400-0.600 mm (0.0157-0.0236 in)
Oil0.200-0.500 mm (0.0079-0.0197 in)
Piston pin outer diameter34.000-34.012 mm (1.3386-1.3391 in)
Piston pin bore diameter34.012-34.024 mm (1.3391-1.3395 in)
Crankshaft main journal diameter:69.994-70.000 mm (2.7557-2.7559 in)
Crankpin diameter:58.994-59.000 mm (2.3226-2.3228 in)

Main bearing cap tightening procedure and torque specs:

  • Step 1: 49 Nm; 5.0 kg·m; 36 ft·lb
  • Step 2: Turn all bolts 90°

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

Connecting rod cap

  • Step 1: 29 Nm; 3.0 kg·m; 22 ft·lb
  • Step 2: Turn all bolts 90°

Crankshaft pulley bolt

  • 363 Nm; 37.0 kg·m; 268 ft·lb

Flywheel (M/T) or Drive plate (A/T) fixing bolts

  • 145 Nm; 14.8 kg·m; 107 ft·lb

Cylinder head

The 1KZ-TE has an aluminum alloy cylinder head with a cross-flow configuration which is mounted on a steel laminate type head gasket and had plastic region tightening bolts. The engine has single overhead (SOHC) high-quality steel camshaft and two valves per cylinder: one intake and one exhaust (8 valves in total). The camshaft is driven by a timing belt and gears.

Intake valves are 42.5 mm (1.6732 in) in diameter, and the exhaust valves are 37.0 mm (1.4567 in). Intake duration is 218° and exhaust duration is 236°. The Toyota 1KZ-TE engine does not have hydraulic lifters, so special shims are used to adjust the valve clearance. Shims are available in 17 sizes from 2.50 mm (0.0984 in) to 3.30 mm (0.1299 in), in steps of 0.05 mm (0.0020 in).

Cylinder head
Cylinder head alloyAluminium
Valve Arrangement:SOHC
Valves:8 (2 valves per cylinder)
Intake valves diameter:42.5 mm (1.6732 in)
Exhaust valves diameter:37.0 mm (1.4567 in)
Intake valves length:103.29-103.69 mm (4.0665-4.0822 in)
Exhaust valves length:103.29-103.69 mm (4.0665-4.0822 in)
Intake valve stem diameter:7.975-7.990 mm (0.3140-0.3146 in)
Exhaust valves stem diameter:7.960-7.975 mm (0.3134-0.3140 in.l
Camshaft journal diameter:27.969-27.985 mm (1.1011-1.1018 in)
Intake cam lobe height:54.810-54.910 mm (2.1579-2.1618 in)
Exhaust cam lobe height:56.140-56.240 mm (2.2102-2.2142 in)

Head tightening procedure and torque specs:

  • Step 1: 39 Nm; 4.0 kg·m; 29 ft·lb
  • Step 2: Turn all bolts 90°
  • Step 3: Turn all bolts 90°

Camshaft bearing cap

  • 18 Nm; 1.85 kg·m; 13 ft·lb

Maintenance data

Valve clearance (Cold)
Intake valve0.20-0.30 mm (0.008-0.012 in)
Exhaust valve0.25-0.35 mm (0.010-0.014 in)
Compression pressure
Standard31.0 kg/m2 (3,040 kPa, 441 psi)
Minimun20.0 kg/m2 (1,961 kPa, 284 psi)
Compression differential limit between cylinders5.0 kg/m2 (490 kPa, 71 psi)
Oil system
Recommended engine oil10W-30 or 10W-40 (“CF”, “CE”, “CD”)
Engine oil capacity Dry fill: 7.5 L (7.9 US qt, 6.6 Imp. qt)
With oil filter change: 7.0 L (7.4 US qt, 6.2 Imp. qt)
Without oil filter change: 6.4 L (6.8 US qt, 5.6 Imp. qt)
Oil pressure Idle speed: 0.3 kgf/cm2 (29 kPa, 4.3 psi)
At 3,000 rpm: 2.5 kgf/cm2 (245 kPa, 33 psi)
Fuel system
Injection nozzle opening pressure New nozzle: 151-159 kgf/cm2 (14,800-15,590 kPa, 2,150-2,260 psi)
Reused nozzle: 146-154 kgf/cm2 (14,300-15,100 kPa, 2,080-2,190 psi)
Adjusted pressure*: 145-155 kgf/cm2 (14,220-15,200 kPa, 2,060-2,200 psi)
*- Varying the adjusting shim thickness by 0.025 mm (0.0010 in) changes the injection pressure by about 4.8 kgf/cm2 (470 kPa, 68 psi).

Vehicle applications

ModelYears Produced
Toyota Land Cruiser Prado (KZJ 70/90/120)
Toyota Hilux Surf / 4Runner (KZN 130/180/210)
Toyota Hiace (KZH 100)
Toyota Gran Via (KCH 10)
Toyota Grand Hiace (KCH 10)
Toyota Touring Hiace (KCH 40)
Toyota Regius (KCH 40)

SPECIFICATION SHEET and SERVICE DATA

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17 Comments

  1. Hi, I have a 4runner 1KZ-T and want to calibrate injector myself but I did not found where to buy a kit of adjusting shims. Do you know where?. Best Regards, M. Wtges. Thanks

  2. I have a Toyota LN 107 with a 3L engine and would like to swap this engine with a 1KZ-TE engine. Will it work? I would like to hear from the experts

    • The 3l is a powerfuller engine with a 12mm injector pump and new injectors and a decent turbo if u need help with all this jump onto my page on Facebook page Pelli turbos. We make anywhere from 160rwhp on mild setups upto around 200hp on bigger jobs. These engines will also take 30 psi all day everyday with no side affects a few of ours are near 70 psi and still happy after years of use for example

  3. j’ai un Toyota année 2000, moteur 1 kz-te, j’ai pas de fuite d’huile, mais il manque d’huile, a chaque semaine je dois ajouter d’huile.

    • Hi
      Please help me with information on where I can get a remanufactured Toyota 1KZ-TE turbo/diesel 3.0L engine.I will be very grateful to get a positive response from you.

  4. A BLESSED day to you,i know of a fact that the TOYOTA 1KZTE is a super duty engine!!..
    But how can i get a remanufactured engine from your store or from JAPAN and what is the coast?
    i am in JAMAICA.you can email me in reply please.

  5. A blessed day to you,whats is the best brand CYLINDER LINER KIT I CAN USE IN MY TOYOTA 1KZTE
    TURBO DIESEL 3.0 LTR

  6. Did anyone actually proof read any of this? The 1kzte engine is a 4 cylinder engine that doesn’t have balance shafts.

    It’s also has 2 valves per cylinder which doesn’t total 10 valves, as it is only a 4 cylinder, not a 5 cylinder.

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