2 jz engine

Types of 2JZ engines

The Toyota 2JZ engine is a 3.0L inline-six engine with Dual VVT-i. There are three main types of the 2JZ engine, each with its own features and specifications.

• 2JZ-GE

  The 2JZ-GE engine is a naturally aspirated engine with an output of around 200 to 220 horsepower, depending on the application and market. The engine was originally designed with a cast-iron block and aluminum DOHC cylinder heads featuring 4 valves per cylinder. The 2JZ-GE had a relatively high compression ratio of 10.5:1, which contributed to its output. Some variants of the 2JZ-GE engine included the VVT-i system, which contributed to improving fuel economy and emissions as well as enhancing engine performance by optimizing the timing of the intake and exhaust valves. The 2JZ-GE uses a belt-driven accessory and also features electronic fuel injection.

• 2JZ-GTE

  The 2JZ-GTE engine is a turbocharged inline-six powerhouse with double overhead cams, 24 valves, and VVT-i. It also has a cast-iron block and an aluminum head. The 2JZ-GTE features a factory single turbo setup with a twin-scroll turbocharger and an intercooler. Its compression ratio is lower than that of the 2JZ-GE, which makes it 8.5:1. It produces between 276 and 300 horsepower and around 440-450 N·m (320-330 lb·ft) of torque. This made the GTE variant one of the most respected and sought-after engines among tuners and enthusiasts.

• 2JZ-FTV

  The 2JZ-FTV engine is a variant installed in the Toyota Land Cruiser and Lexus LX 470. The engine has a 3.0-liter capacity and utilizes turbo direct injection technology. It has an output of around 230 hp and torque of about 480 N·m.

Specification and maintenance of JZ engines

The key specifications of the 2JZ family are as follows:

• 2JZ-GE: The 2JZ-GE was the base inline-six engine in the Toyota JZ family. It used a DOHC design with VVT-i and produced roughly 140 to 155 kW (190 to 210 hp).
• 2JZ-GTE: The 2JZ-GTE was the twin-turbocharged variant of the 2JZ-GE. It featured two sequential turbos and an intercooler, which gave it a substantial power increase. The 2JZ-GTE produced approximately 206 kW (276 hp) to 240 kW (320 hp) in some models. The engine was well-known for its plenteous modification potential and tunability.
• Strength: The 2JZ was a cast iron engine block with aluminum pistons, a high-strength conrod, a DOHC design with a 20-valve head, and a multi-point fuel injection system. The variable valve timing (VVT) technology helped improve fuel economy as well as low and high RPM torque.

As long as the engine is properly maintained, the 2JZ engine can be kept in good condition. Here are some general maintenance instructions:

• Replace the timing belt: The timing belt should be replaced every 150,000 to 175,000 kilometers to ensure that the engine's valves and pistons are in sync. This prevents serious engine damage and maintains optimal performance.
• Regular oil changes: It's critical to perform regular oil changes with high-quality motor oil. This helps prevent the buildup of sludge, which could reduce engine performance. Regular oil changes also provide lubrication, cooling, and cleaning of engine parts.
• Air filter replacement: The air filter should be replaced to prevent debris and dirt from getting into the engine. A clean air filter allows proper airflow, which is essential for the engine to maintain strong combustion.
• Oxygen sensor replacement: Oxygen sensors help monitor the amount of oxygen in the exhaust gases. If patients aren't replaced on time, the engine could burn fuel ineffectively. As a result, it loses performance. Replacing them on time helps the engine to function efficiently.
• Check and repair cooling system: The 2JZ engine's cooling system must be checked and repaired. This is because the engine is susceptible to overheating damage. A properly functioning cooling system maintains normal operating temperature to prevent overheating.

Scenarios of 2 JZ engines

The 2 JZ engine is most commonly used in Toyota luxury sedans and sports cars from the 1990s, such as the Lexus GS, Toyota Aristo, and Supra MK4. These markets favored a high-performance, smooth-operating engine that could provide both a sporty driving experience and a high level of comfort.

However, the 2 JZ engine has found its way into many other vehicles due to its aftermarket potential. Because of its ability to handle high horsepower, many high-performance vehicles use the 2 JZ engine. It is well-suited for turbocharging, and its robust construction enables it to withstand high levels of boost. The engine responds exceptionally well to modifications like bigger intercoolers, better fuel pumps, and higher-capacity injectors. As a result, it has a prominent presence in the racing world.

In the drift and racing scene, the engine has been a favorite of many racers and drifters. This is because the 2 JZ engine already produces immense power, which is vital for drifting and racing. Its high-performance capabilities also enable it to create the power that is needed to cope with the high-stress levels of drifting and racing.

In the drag racing scene, the 2 JZ engine creates a significant presence. Many drag racers utilize the engine with its turbocharged variant, the 2 JZ-GTE, as their preferred choice. Its ability to produce immense power and high torque, combined with its sturdy construction, makes it an ideal candidate for drag racing with its turbo upgrade.

How to choose a 2JZ engine

When buying a used 2JZ engine, buyers should get the engine's full history. This includes information about its installation timeline and any modifications made. Also, they should find out the type of car the engine was in and why the owner sold it. In most cases, people sell their 2JZ turbo engines because the car is old and they are upgrading to a new one. Determining the selling point can help future buyers better use the engine in their application.

Since the 2JZ engine isn't produced anymore, buyers must find out if the engine is MK3, MK4, or MK2. They should ask for pictures or videos to determine its type and series. It's important to know the specifications of each type of 2JZ engine to get its performance advantages and benefits.

When buying a used 2JZ engine, buyers should consider the mileage on the engine. An engine with low mileage is likely to perform better than one with high mileage. However, it's important to note that mileage alone can't determine the engine's condition. Buyers should request the engine's diagnostic report. The report reveals the condition of important engine parts, such as the head gasket, valves, pistons, and bearings. If no report is available, buyers can take the engine to their mechanic to perform a thorough inspection before buying.

Since the 2JZ engine is highly compatible with aftermarket parts, buyers can look for an engine with included parts. Some lucrative packages include intercoolers, exhaust systems, turbochargers, and more. It's also important to ask about the 2JZ engine's horsepower. However, the horsepower may depend on the type of turbocharger used and the settings on the ECU.

Finally, buyers should look for reputable suppliers and sellers. They should read reviews from previous buyers to determine if the seller is trustworthy. If possible, they can contact the seller and discuss important details about the engine, including its installation procedure and potential issues. An open conversation can quickly boost buyers' confidence and help them make great purchases.

2 JZ engine FAQ

Q1: What is the difference between 1JZ and 2JZ engines?

A1: The 1JZ has a steel cylinder block, a cast iron cylinder head, and variable valve timing. The 2JZ upgraded to a larger 2.5 and 3.0 displacement. The 2JZ also has an upgrade of greater cylinder volume, stronger connecting rods, and a more significant oil pump.

Q2: How much HP can 2JZ GE BEams?

A2: The BEAMS 2JZ-GE, which had VVTi, made 280 horsepower in the Toyota Aristo and Toyota Soarer, but many of these cars did not come to the US.

Q3: How much HP does 2JZ GTE have?

A3: The 2JZ-GTE engine had an intercooled turbocharger, 6-volt amp electrics, and variable valve timing. The engine was rated at 280 horsepower and 368 lb-ft from 3600 to 5600 rpm.

Q4: Why is the 2JZ engine famous?

A4: The 2JZ engine is prevalent with tuners, primarily because of its strength. The factory direct shot, twin turbo setup, CT12B turbocharger, and intercooler system were engineered to support significant power increases. Porsche was not impressed. The record-setting Supra drag car Dennis McCarthy drove in Fast 7 had a 2JZ engine. In the second half of the 1990s, the US National Hot Rod Association banned the Supra from drag racing tournaments after it consistently defeated V8 muscle cars.