Toyota 1JZ-GTE/GE/FSE Engine is a 2.5-liter straight-six naturally aspirated or turbocharged gasoline engine out of JZ family which also includes 3.0-liter version – 2JZ engine. The 1JZ series was produced from 1990 to 2007 and used in rear-wheel-drive Toyota’s models such as Toyota Supra, Toyota Mark II, Toyota Crown, Toyota Soarer, and etc. The engine became popular thanks to a turbocharged version (1JZ-GTE) as well as incredible reliability and potential for tuning. But the most widespread 1JZ engine is the 1JZ-GE – 2.5L naturally aspirated version.

All 1JZs have a cast iron cylinder block, aluminum cylinder head with four valves per cylinder (24 valves total) and solid shimless buckets (no hydraulic lifters), double overhead camshafts driven by a toothed timing belt, and two-stage variable length intake manifold (Toyota’s ACIS). Later 1JZ-GE engines had an ignition system with distributor and 10:1 compression ratio. After updating in 1995, they were equipped with DIS-3 distributorless ignition and variable valve timing technology VVT-i for the intake only. 1JZ-GE VVT-i engines have a 10.5:1 compression ratio. As you can see, the most common 1JZ version is a straight forward six-cylinder engine with a minimum of expensive and unreliable electronic components.

The 1JZ-GTE engine is a high-performance version used in sporty models. The first generation 1JZ twin turbo was equipped with two CT12A turbochargers producing together a 10 psi (0.7 bar) of boost pressure. The 1JZ-GTE Gen 1 has forged connecting rods and pistons lowering compression ratio to 8.5:1. The fuel system got 380 cc injectors. 1JZ-GTE camshaft specifications: duration – 224/228 deg (intake/exhaust), valve lift 7.69/7.95 mm (intake/exhaust).

Like the 1JZ-GE, the 1JZ-GTE went through some changes in 1996. This second-gen turbo 1JZ has Toyota’s BEAMS architecture. The biggest one is the replacement of two turbochargers with a single CT-15B turbocharger. Toyota’s engineers also added the VVT-i system for the intake and increased the compression ratio to 9.0:1. A new cylinder head has smaller exhaust ports and modified water jackets for efficient cooling. New modified turbo engines produce the same power, but the max torque was increased by 15 lb-ft (20 Nm) and more noticeable, have 50% torque increase low engine speeds.

In 2000, Toyota introduced the 1JZ-FSE – a 2.5-liter inline six-cylinder direct-injected gasoline engine. The 1JZ-FSE engine had an engine block from the 1JZ-GE and unique cylinder head design implementing Toyota’s direct injection system D-4. FSE engines have 11.0:1 compression ratio and always came with VVT-i.

Engine Specs

Manufacturer

Tahara Plant, Japan

Production years

1990-2007

Cylinder block material

Cast iron

Cylinder head material

Aluminum

Fuel type

Gasoline

Fuel system

Multiport sequential fuel injection (SFI);
Direct injection

Configuration

Inline

Number of cylinders

6

Valves per cylinder

4

Valvetrain layout

DOHC

Bore, mm

86.0 mm (3.39 in)

Stroke, mm

71.5 mm (2.81 in)

Displacement, cc

2,492 cc (152.1 cu in)

Type of internal combustion engine

Four-stroke, naturally aspirated/turbocharged

Compression Ratio

11.0:1 – 1JZ-FSE
10.0:1 – 1JZ-GE
10.5:1 – 1JZ-GE VVT-i
8.5:1 – 1JZ-GTE
9.0:1 – 1JZ-GTE VVT-i

Power, hp

170-280 hp (125-205 kW)/6,000-6,200

Torque, lb ft

173-280 lb-ft (235-379 Nm)/4,000-4,800

Engine weight

455 lbs (207 kg)

Firing order

1-5-3-6-2-4

Engine oil capacity, liter

5.4 l (5.7 qt) – 1JZ-GTE/GE 2WD Mark 2, Cresta, Chaser

Engine oil weight

SAE 5W-30 – non turbo;
SAE 10W-30 Synthetic Motor Oil – turbo enginesOil recommendations and capacity may vary depending on the car model, year, and market. Please check the service manual specific to your vehicle!

Oil change interval, mile

10,000 (15,000 km) / 12 months

Cars with this engine

Toyota Crown, Toyota Mark II, Toyota Supra, Toyota Brevis, Toyota Chaser, Toyota Cresta, Toyota Mark II Blit, Toyota Progres, Toyota Soarer, Toyota Tourer V, Toyota Verossa