Toyota 1JZ-FSE

The Toyota 1JZ-FSE is a 2.5 liter (2,492 cc, 152.07 cu-in) straight-six, four-stroke cycle natural aspirated gasoline engine from the Toyota JZ-family. The engine was manufactured by the Toyota Motor Corporation on the Tahara Plant (Tahara, Aichi, Japan) from 1999 to 2007.

The Toyota 1JZ-FSE engine features a cast-iron block, aluminum cylinder head with dual belt-driven overhead camshafts and four valves per cylinder (24 in total). The 1JZ-FSE is equipped with Toyota D4 direct injection system, VVT-i (Variable Valve Timing with intelligence). Bore and stroke are 86.0 mm (3.39 in) and 71.5 mm (2.81 in), respectively. Compression ratio rating is 11:1.

The 1JZ-FSE engine used the same block as the 1JZ-GE, however, the design of the cylinder head is unique. The 1JZ D4 has a relatively narrow-angle cylinder head with swirl control valves that serve to improve combustion efficiency. This engine produced 200 PS (147 kW; 197 HP) at 6,000 rpm of maximum horsepower and 250 Nm (25.6 kg·m; 185.24 ft·lb) at 4,000 rpm of peak torque.

The breakdown of the engine code is as follows:

• 1 – 1-st generation engine
• JZ – Engine family
• F – Economy narrow-angle DOHC
• S – Gasoline direct injection system (D-4)
• E – Multi-Point Fuel Injection

General information

Engine Specifications
Engine code	1JZ-FSE
Layout	Four stroke, Inline-6 (Straight-6)
Fuel type	Gasoline
Production	1999-2007
Displacement	2.5 L, 2,492 cm3 (152.07 cu in)
Fuel system	D4 direct injection system
Power adder	None
Max. horsepower	200 PS (147 kW; 197 HP) at 6,000 rpm
Max. torque	250 Nm (25.6 kg·m; 185.24 ft·lb) at 4,000 rpm
Firing order	1-5-3-6-2-4
Dimensions (L x H x W):	–
Weight	–

Cylinder block

The Toyota 1JZ-FSE engine has a cast-iron cylinder block, bore is 86.0 mm (3.39 in) and stroke is 71.5 mm (2.81 in). The cylinder block, a monoblock specially cast structure, employs the seven bearing support system. The crankshaft has seven journals and twelve counterweights; both pins and journals were induction-hardened.

The pistons are special aluminum casting. Each piston is fitted with two compression rings and a single oil ring. Compression ratio rating is 11:1.

Cylinder block
Cylinder block alloy		Cast-iron
Compression ratio:		11:1
Cylinder bore:		86.0 mm (3.39 in)
Piston stroke:		71.5 mm (2.81 in)
Number of piston rings (compression / oil):		2 / 1
Number of main bearings:		7
Cylinder inner diameter (standard):		86.000-86.013 mm (3.3858-3.3863 in)
Piston skirt diameter (standard):		85.935-85.945 mm (3.3832-3.3836 in)
Piston pin outer diameter:		21.997-22.006 mm (0.8660-0.8664 in)
Piston ring side clearance:	Top	0.040-0.080 mm (0.0016-0.0031 in)
	Second	0.030-0.070 mm (0.0012-0.0028 in)
Piston ring end gap:	Top	0.27-0.37 mm (0.0106-0.0146 in)
	Second	0.37-0.45 mm (0.0146-0.0185 in)
	Oil	0.10-0.40 mm (0.004-0.0157 in)
Crankshaft main journal diameter:		62.000 mm (2.4410 in)
Crankpin diameter:		52.000 mm (2.0472 in)
Crankshaft center distance:		35.75 mm (1.4074 in)

Main bearing cap bolts torque specs:

• Step 1: 44 Nm; 4.5 kg·m; 32.5 ft·lb
• Step 2: Turn all bolts 90°

Connecting rods cap bolts torque specs:

• Step 1: 29 Nm (3.0 kg·m; 21.4 ft·lb)
• Step 2: Turn all bolts 90°

Flywheel bolt torque specs:

• Step 1: 49 Nm (5 kg·m; 36.16 ft·lb)
• Step 2: Turn all bolts 90°

Drive plate fixing bolts: 83 Nm (8.5 kg·m; 61.3 ft·lb)

Cylinder head

The cylinder head is made of a light, strong aluminum alloy with good cooling efficiency. Camshafts are made of specially cast steel and are driven by timing belt. The Toyota 1JZ engines are not equipped with hydraulic lifters, so special valve shims are used to adjust the valve clearance.

Cylinder head alloy: Aluminum Valve Arrangement: DOHC, belt drive Valves: 24 (4 valves per cylinder) Intake duration: – Exhaust duration: – Valve head diameter: INTAKE – EXHAUST – Valve length: INTAKE 96.27-96.77 (3.7941-3.8098 in) EXHAUST 96.38-96.88 mm (3.7945-3.8142 in) Valve stem diameter: INTAKE 5.970-5.985 mm (0.2350-0.2356 in) EXHAUST 5.965-5.980 mm (0.2348-0.2354 in) Valve spring free length: 47.09 mm (1.8539 in) Camshaft lobe height: INTAKE 45.380-46.280 mm (1.7866-1.8220 in) EXHAUST 44.250-44.350 mm (1.7420-1.7460 in)

Cylinder head torque specs:

• Step 1: 35 Nm; 3.6 kg·m; 25.83 ft·lb
• Step 2: Turn all bolts 90°
• Step 2: Turn all bolts another 90°

Maintenance data

Valve clearance
Intake valve	0.15-0.25 mm (0.006-0.010 in)
Exhaust valve	0.25-0.35 mm (0.010-0.014 in)
Compression pressure
Standard	13.0 kg/cm2 / 350 rpm
Minimun	11.0 kg/cm2 / 250 rpm
Compression differential limit between cylinders	1.0 kg/cm2 / 250 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles)	up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil	5W-30 5W-40 10W-30
Oil type API	SG or SJ
Engine oil capacity (Refill capacity)	2WD Without oil filter: 5.1-5.4 l With oil filter: 5.4-5.7 l 4WD Without oil filter: 4.2 l With oil filter: 4.5 l
Oil change interval, km (miles)	10,000 (6,000)
Ignition system
Spark plug	DENSO: SK20BR11;
Spark plug gap	1.0-1.1 mm (0.039-0.043 in)

Valve clearance adjustment data

Calculate the thickness of new adjusting valve lifter so valve clearance comes within specified values.

R = Thickness of removed valve lifter
N = Thickness of new valve lifter
M = Measured valve clearance

Intake:
N = R + [M – 0.20 mm (0.008 in)]
Exhaust:
N = R + [M – 0.30 mm (0.012 in)]

Valve lifters are available in 35 sizes to range from 5.06 mm (0.1992 in) to 5.74 mm (0.2260 in), in steps of 0.02 mm (0.0008 in).

Example (intake valve):
R = 5.12 mm
M = 0.40 mm
N = 5.12 + (0.40 – 0.20) = 5.72 mm, so we need a valve shim with thickness of 5.72 mm (Mark 72) (0.2252 in).

Vehicle applications

Model	Years Produced
Toyota Марк II	2000-2007
Toyota Brevis	2001-2007
Toyota Progres	2001-2007
Toyota Crown	1999-2003
Toyota Toyota Mark II Blit	2002-2007
Toyota Verossa	2001-2004