Toyota 1JZ-GTE

Toyota 1JZ-GTEThe Toyota 1JZ-GTE is a 2.5 liter (2,492 cc, 152.07 cu-in) straight-six, four-stroke cycle turbocharged gasoline engine from the Toyota JZ-family. The engine was manufactured by the Toyota Motor Corporation on the Tahara Plant (Tahara, Aichi, Japan) from 1990 to 2007.

The Toyota 1JZ-GTE engine features a cast-iron block, aluminum cylinder head with dual belt-driven overhead camshafts (DOHC) and four valves per cylinder (24 in total). The 1JZ-GTE is equipped with an electronic fuel injection system, VVT-i (Variable Valve Timing with intelligence) since 1996, ACIS variable-length intake manifold.

The bore and stroke are the same as for the 1JZ-GE: cylinder bore is 86 mm (3.39 in) and piston stroke 71.5 mm (2.81 in), but this engine has a lot of different parts. In addition, the Yamaha Motor company took a great part in the development of this engine.

The first generation of the Toyota 1JZ-GTE had a compression ratio rating of 8.5:1, twin CT12A turbochargers arranged in parallel and blowing through a side-mount or front mount intercooler and was manufactured from 1990 to 1995. This version produced 280 PS (206 kW; 276.2 HP) at 6,200 rpm of maximum horsepower and 363 Nm (37.0 kg·m; 267.9 ft·lb) at 4,800 rpm of peak torque.

The second generation had increased compression ratio rating of 9.0:1, VVT-i system on the inlet camshaft, ETCS system or ETCS-i (for Toyota Chaser JZX110 and Toyota Crown JZS171). This engine belonged to the BEAMS (Breakthrough Engine with Advanced Mechanism System) family of Toyota engines. The engine received a reworked head, modified water jackets for improved cylinder cooling, newly shims with a titanium nitride coating and single CT15B turbocharger. Second generation 1JZ-GTE engine produced 280 PS (206 kW; 276.2 HP) at 6,200 rpm of horsepower and 378 Nm (38.6 kg·m; 279 ft·lb) at 2,400 rpm of maximum torque.

The breakdown of the engine code is as follows:

  • 1 – 1-st generation engine
  • JZ – Engine family
  • G – Performance wide-angle DOHC
  • T – Turobchagered
  • E – Multi-Point Fuel Injection

General information

Engine Specifications
Engine code1JZ-GTE
LayoutFour stroke, Inline-6 (Straight-6)
Fuel typeGasoline
Production1990-2007
Displacement2.5 L, 2,492 cm3 (152.07 cu in)
Fuel systemMulti-point fuel injection system
Power adder 1-st gen: Twin CT12A turbochargers
2-st gen: Single CT15B turbocharger
Max. horsepower280 PS (206 kW; 276.2 HP) at 6,200 rpm
Max. torque 1-st gen:
363 Nm (37.0 kg·m; 267.9 ft·lb) at 4,800 rpm
2-nd gen:
378 Nm (38.6 kg·m; 279 ft·lb) at 2,400 rpm
Firing order1-5-3-6-2-4
Dimensions (L x H x W):
Weight

Cylinder block

The Toyota 1JZ-GTE 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 for the first generation of 1JZ-GTE without VVT-i system is 8.5:1, for the second generation (BEAMS) with VVT-i, is 9.0:1.

Cylinder block
Cylinder block alloyCast-iron
Compression ratio: 1-st gen: 8.5:1
2-nd gen (BEAMS): 9.0:1
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:Top0.011-0.070 mm (0.0004-0.0027 in)
Second0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap:Top0.28-0.40 mm (0.0110-0.0157 in)
Second0.35-0.45 mm (0.0137-0.0177 in)
Oil0.13-0.38 mm (0.0051-0.0150 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 the timing belt. The first generation 1JZ-GTE has the intake valves with 224° of duration, valve lift is 7.69 mm (0.30 in) and the exhaust valve duration is 228°, valve lift is 7.95 mm (0.31 in). The second generation of 1JZ-GTE is equipped with VVT-i system.

The Toyota 1JZ engines are not equipped with hydraulic lifters, so special valve shims are used to adjust the valve clearance.

Cylinder head alloy:AluminumValve Arrangement:DOHC, belt driveValves:24 (4 valves per cylinder)Intake duration:224° for 1-st generationExhaust duration:228° for 1-st generationValve head diameter:INTAKE–EXHAUST–Valve length:INTAKE97.15-97.95 (3.8248-3.8563 in)EXHAUST95.75-98.55 mm (3.7696-3.8799 in)Valve stem diameter:INTAKE5.960-5.975 mm (0.2346-0.2352 in)EXHAUST5.955-5.970 mm (0.2344-0.2350 in)Valve spring free length:44.43 mm (1.7492 in)Camshaft lobe height:INTAKE43.754-43.762 mm (1.7225-1.7229 in)EXHAUST44.004-44.014 mm (1.7324-1.7328 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 valve0.15-0.25 mm (0.006-0.010 in)
Exhaust valve0.25-0.35 mm (0.010-0.014 in)
Compression pressure
Standard12.5 kg/cm2 / 350 rpm
Minimun9.0 kg/cm2 / 350 rpm
Compression differential limit between cylinders1.0 kg/cm2 / 350 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 APISG or SJ
Engine oil capacity (Refill capacity) Without oil filter: 5.1-5.4 l
With oil filter: 5.4-5.7 l

For JZX90 since oct. 1993
Without oil filter: 5.6 l
With oil filter: 5.9 l

Oil change interval, km (miles)10,000 (6,000)
Ignition system
Spark plug 1991-1996
DENSO: PK20R8; NGK: BKR6EP8

1996-2000 (VVTi)
DENSO: PK20TR11; NGK: BKR6EKPB11

After 2000 (VVTi)
DENSO: SK20R-P11;

Spark plug gap For PK20R8 and BKR6EP8:
0.7-0.8 mm (0.027-0.031 in)
For PK20TR11, BKR6EKPB11, SK20R-P11:
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 17 sizes range from 2.50 mm (0.0984 in) to 3.30 mm (0.1181 in), in steps of 0.05 mm (0.0020 in).

Example (intake valve):
R = 2.90 mm
M = 0.40 mm
N = 2.90 + (0.40 – 0.20) = 3.10 mm, so we need a valve shim with thickness of 3.10 mm (0.1220 in).

Vehicle applications

ModelYears Produced
Toyota Chaser 2.5 GT Twin Turbo
Toyota Cresta 2.5 GT Twin Turbo
Toyota Mark II 2.5 GT Twin Turbo (JZX81)
Toyota Chaser Tourer V
Toyota Cresta Tourer V
Toyota Mark II Tourer V (JZX90, JZX100)
Toyota Verossa
Toyota Mark II iR-V (JZX110)
Toyota Soarer (JZZ30)
Toyota Supra MK III (JZA70)
Toyota Crown (JZS170)
Toyota Mark II Blit
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2 Comments

  1. hellooo
    contacting from Georgia,Tbilisi.
    need engine JDM 1JZ-GTE .
    please kindly inform me last best price .
    also the shipping cost to georgia by sea .
    add :20,radiani str ,zip code 0179,

    waiting asap
    thanks

    respectfully
    mr Vano Sanikidze

    +995577577237

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