Toyota 1JZ-GE engine

The 1JZ-GE engine is undoubtedly a Toyota legend. It was created in 1990 and became the first representative of the JZ line, installed exclusively on rear-wheel drive models with automatic transmission. Throughout its history, the engine was produced at the Japanese Tahan plant, owned by Toyota Motor, until 2007.

Toyota 1JZ-GE as a whole has established itself as a stable, safe and powerful enough engine. Two main series of the motor can be distinguished - 1990 and 1995 with an integrated VVT-i system with variable valve timing.

Technical specifications

Engine displacement, cc	2491
Maximum power, hp	280
Maximum torque, N * m (kg * m) at rpm.	363 (37) to 4800 378 (39) to 2400
Fuel used	Petrol Premium (AI-98) Petrol
Fuel consumption, l / 100 km	5.8 – 13.9
engine's type	6-cylinder, 24-valve, DOHC, liquid-cooled
Add. engine information	variable valve timing system
Maximum power, h.p. (kW) at rpm	280 (206) to 6200
Compression ratio	8.5 – 9
Cylinder diameter, mm	86
The piston stroke, mm	71.5
Supercharger	Turbine Twin turbocharging
The mechanism for changing the volume of cylinders	no

• Toyota 1JZ-GE has a block with 6 longitudinal (in-line) cylinders and 24 valves, 4 of which are per cylinder. There is no hydraulic compensator;
• The ignition system is distributor (first generation) and reel-to-reel (second generation: 1 coil = 2 candles);
• The torque on the motor is 250 N * m = 4000 rpm;
• Fuel consumption on the highway - 8.3 liters, and in the city 14.2 liters (for example, Toyota Mark 2 1999 release);
• Gas distribution mechanism - belt;
• The engine operating life declared by the manufacturer is 350.000 km;
• The piston diameter is 86 mm, the stroke is 71,5;
• The injection system in the unit is distributed;
• Power is 200 hp, compression ratio is 10: 1.

Modifications

1JZ-FSE D4 - produced from 2000 to 2007.

1JZ-GTE is the only version with turbines. In the model, the power has been improved, the compression ratio has increased (9), the torque has increased significantly (up to 378 N * m).

1JZ-GE problems

It is better to always keep the ignition system completely dry, it is very susceptible to moisture;

Increased oil consumption at high mileage due to wear of the oil scraper rings;

Quite short service life of the VVT-i valve;

The pump also runs a little, the valves require periodic adjustment.

Tuning

Tuning a naturally aspirated engine is always a rather dubious question in terms of the result. You can change the camshafts, the throttle, flash the computer, but you will not get a solid increase.

Installing a turbine or compressor on an atmomotor will be much more expensive and less reliable than a swap on a turbocharged version of the 1JZ-GTE.

Video about the motor 1JZ-GE

Toyota 1JZ-GE engine - Legendary Japanese Aspirated