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Toyota 1JZ-GTE Engine Specifications
The Toyota 1JZ-GTE is a 2.5 liter (2,492 cc, 152.07 cubic inches) 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 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 kgm; 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 kgm; 279 ft-lb) at 2,400 rpm of maximum torque.
Engine code identification:
1 – 1-st generation engine
JZ – Engine family
G – Performance wide-angle DOHC
T – Turobchagered
E – Multi-Point Fuel Injection
| GENERAL TECHNICAL DATA |
Engine model ...................... 1JZ-GTE
Cylinder layout ...................... Four stroke, Inline-6 (Straight-6)
Fuel type ...................... Gasoline
Year of production ...................... 1990-2007
Total displacement ...................... 2.5 L, 2,492 cm3 (152.07 cubic inches)
Fuel system ...................... Multi-point fuel injection system
Power adder ...................... 1-st gen: Twin CT12A turbochargers
2-st gen: Single CT15B turbocharger
Max. horsepower ...................... 280 PS (206 kW; 276.2 HP) at
6,200 rpm
Max. torque ...................... 1-st gen:
363 Nm (37.0 kgm; 267.9 ft-lb) at 4,800 rpm
2-nd gen:
378 Nm (38.6 kgm; 279 ft-lb) at 2,400 rpm
Firing order ...................... 1-5-3-6-2-4
Dimensions (L x H x W) ...................... No data available
Weight ...................... No data available
| 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 alloy ...................... Cast-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 ...................... Top
...................... 0.011-0.070 mm (0.0004-0.0027 in)
Second ...................... 0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap ...................... Top ......................
0.28-0.40 mm (0.0110-0.0157 in)
Second ...................... 0.35-0.45 mm (0.0137-0.0177 in)
Oil ...................... 0.13-0.38 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 kgm; 32.5 ft-lb
Step 2: Turn all bolts 90°
Connecting rods cap bolts torque specs:
Step 1: 29 Nm (3.0 kgm; 21.4 ft-lb)
Step 2: Turn all bolts 90°
Flywheel bolt torque specs:
Step 1: 49 Nm (5 kgm; 36.16 ft-lb)
Step 2: Turn all bolts 90°
Drive plate fixing bolts: 83 Nm (8.5 kgm; 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: Aluminum Valve Arrangement: DOHC, belt drive
Valves: 24 (4 valves per cylinder) Intake duration: 224° for 1-st
generation Exhaust duration: 228° for 1-st generation Valve head
diameter: INTAKE – EXHAUST – Valve length: INTAKE 97.15-97.95
(3.8248-3.8563 in) EXHAUST 95.75-98.55 mm (3.7696-3.8799 in) Valve stem
diameter: INTAKE 5.960-5.975 mm (0.2346-0.2352 in) EXHAUST 5.955-5.970
mm (0.2344-0.2350 in) Valve spring free length: 44.43 mm (1.7492 in)
Camshaft lobe height: INTAKE 43.754-43.762 mm (1.7225-1.7229 in) EXHAUST
44.004-44.014 mm (1.7324-1.7328 in)
Cylinder head torque specs:
Step 1: 35 Nm; 3.6 kgm; 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 ...................... 12.5 kg/cm2 / 350 rpm
Minimun ...................... 9.0 kg/cm2 / 350 rpm
Compression differential limit between cylinders ......................
1.0 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 API ...................... SG 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 |
Model ...................... Years Produced
Toyota Chaser 2.5 GT Twin Turbo ...................... No data available
Toyota Cresta 2.5 GT Twin Turbo ...................... No data available
Toyota Mark II 2.5 GT Twin Turbo (JZX81) ...................... No data available
Toyota Chaser Tourer V ...................... No data available
Toyota Cresta Tourer V ...................... No data available
Toyota Mark II Tourer V (JZX90, JZX100) ...................... No data available
Toyota Verossa ...................... No data available
Toyota Mark II iR-V (JZX110) ...................... No data available
Toyota Soarer (JZZ30) ...................... No data available
Toyota Supra MK III (JZA70) ...................... No data available
Toyota Crown (JZS170) ...................... No data available
Toyota Mark II Blit ...................... No data available
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