The Toyota 2JZ engine is a series of inline-6 automobile engines produced by Toyota Motor Corporation. It was produced from 1991 to 2007 (in some countries). When it comes to legendary engines, the Toyota 2JZ is often at the top of the list. Known for its robust design and impressive performance capabilities, this engine has garnered a cult-like following among automotive enthusiasts around the world. With its ability to handle high levels of power and its reputation for reliability, it’s no wonder why the 2JZ engine continues to be revered as one of the best in the industry (actually the best).

Here are some key details:

• Configuration: It’s an inline-layout, six-cylinder, belt-driven dual overhead camshaft, air-intercooled, twin-turbocharged engine.
• Materials: The cylinder block is made of cast iron, while the cylinder head is made of aluminium.
• Versions: The engine comes in different versions, including the 2JZ-GE (a naturally aspirated power unit known for its reliability and performance) and the 2JZ-GTE (a twin-turbocharged version used in the iconic Toyota Supra).
• 2JZ-GE: This version has a 10:1 compression ratio. In 1997, Toyota implemented VVT-i for the intake valve timing and a more advanced ignition system.
• 2JZ-GTE: This version has a lower compression ratio of 8.5:1 due to the addition of turbochargers. It also features oil spray nozzles for additional cooling of the pistons.
• The 2JZ engine is well-known for its performance and reliability, and it’s especially famous for its use in the Toyota Supra MK4 JZA80.

What makes the 2JZ engine so strong?

The Toyota 2JZ engine is renowned for its strength and performance, and there are several factors that contribute to these characteristics:

• Iron Block and Closed Deck Design: The 2JZ engine has an iron block, which is a stronger material compared to aluminum used in many modern engines. The closed-deck design of the block provides additional rigidity under high boost levels.
• Inline Six Design: The inline six design of the 2JZ is more balanced than the more common V-style engines. This design, along with the seven main bearing caps, helps secure the crank inside the block under heavy boost.
• Zero-Interference Design (2JZ NON VVTI engines only): This design means that if the timing belt breaks, the valves won’t hit the tops of the pistons, preventing catastrophic damage.
• High Power Potential: The 2JZ engine was built to handle enormous power in its stock form. With just a single turbo conversion, upgraded fuel, and tuning, it can support 700hp to 800hp+. With the help of the huge aftermarket support, the 2JZ engine can meet almost any horsepower goal.
• Reliability: Even after nearly 30 years of use and potential abuse, many 2JZ engines are still going strong.

These factors combined make the 2JZ engine a favorite among car enthusiasts and tuners for its durability and high performance potential.

The Toyota 2JZ engine is popular for several reasons:

• Over-Engineered Design: The 2JZ engine is over-engineered and has a closed engine design, which allows for the use of mass amounts of boost on stock internals.
• Tuner Community: The 2JZ engine has a legendary status in the tuner community. It’s what made the last year of the Toyota Supra so popular on the market.
• Affordability and Accessibility: Any couple of enthusiasts can drop a few hundred dollars to buy a 2JZ-GE engine to cram into some old Nissan or BMW if they want to and make a high-horsepower car in their garage, of course with a big turbo on it
• Aftermarket Support: The 2JZ engine has extensive aftermarket support, which allows tuners to easily upgrade and customize the engine.

These factors contribute to the 2JZ engine’s reputation as one of the best and most reliable engines for tuning and high-performance applications.