When it comes to iconic power plants, Toyota’s 1JZ and 2JZ inline six-cylinder engines stand tall as engineering marvels that have captured the hearts of automotive enthusiasts worldwide. Both engines, developed in the early 1990s, have become synonymous with legendary Japanese cars and are still highly sought-after today. As automotive enthusiasts increasingly embrace engine swaps to enhance their rides, the 1JZ and 2JZ have become popular choices for breathing new life into a variety of vehicles, including lesser-powered Toyotas, BMWs, and even certain American cars.
In this comprehensive guide, we will delve into the key differences between the Toyota 1JZ and 2JZ engines, exploring their specifications, history, and performance characteristics. Whether you’re a seasoned tuner or a newcomer to the world of engine swaps, this article will provide valuable insights to help you make the best decision for your upcoming project.
Toyota 1JZ-GTE: A Masterpiece of Engineering
Specifications of the Toyota 1JZ-GTE Engine
- Engine Code: 1JZ-GTE
- Layout: Inline 6 cylinder Turbocharged DOHC 24V
- Displacement: 2.5 L (2,492 cc)
- Fuel System: Electronic Fuel Injection
- Cylinder Bore: 86 mm (3.39′′)
- Piston Stroke: 71.5 mm (2.81′′)
- Compression Ratio: 8.5:1, 9.0:1 (gen 2)
- Power: 276 hp at 6,200 rpm
- Torque: 268 lb-ft, 283 lb-ft (gen 2) @ 4,800 rpm
- Firing Order: 1-5-3-6-2-4
The 1JZ-GTE’s Origins and Advancements
The 1JZ-GTE made its debut as a replacement for Toyota’s M-series engines from the 1960s and 1980s. The 1JZ-GE and 1JZ-GTE share commonalities with their predecessors, the 7M-GE and 7M-GTE, boasting an aluminum head, chain-driven single overhead cam, and cast-iron block. However, Toyota improved the design post-1980 with the switch to belt-driven DOHC. The 1JZ-GTE stands as the turbocharged version of the 1JZ-GE, featuring twin turbochargers (initially) and an air-to-air intercooler to cool the intake charge. The engine’s stock boost of 10 psi (0.7 bar) delivers a robust output of 276 horsepower and 268 lb-ft of torque. Its forged pistons, connecting rods, and 380-cc upgraded injectors contribute to its impressive performance.Applications of the Toyota 1JZ-GTE Engine
The 1JZ-GTE powered several iconic JDM cars, including:- Toyota Chaser / Cressida
- Toyota Soarer
- Toyota Supra MK III
- Toyota Verossa
- Toyota Crown
- Toyota Mark II
Toyota 2JZ-GTE: The Legend Continues
Specifications of the Toyota 2JZ-GTE Engine
- Engine Code: 2JZ-GTE
- Layout: Inline 6 cylinder Turbocharged DOHC 24V
- Displacement: 3.0 L (2,997 cc)
- Fuel System: Electronic Fuel Injection
- Cylinder Bore: 86 mm (3.39′′)
- Piston Stroke: 86 mm (3.39′′)
- Compression Ratio: 8.5:1
- Power: 320 hp @ N/A
- Torque: N/A
- Firing Order: 1-5-3-6-2-4
Unraveling the 2JZ-GTE’s Prowess
The Toyota 2JZ-GTE boasts the same cylinder bore as its 1JZ counterpart but differentiates itself with a longer stroke, resulting in a displacement of 3.0 liters. This change, along with a taller engine block and longer connecting rods, sets the 2JZ-GTE apart from the 1JZ-GTE. The 2JZ-GTE’s twin-turbocharged configuration, known as sequential turbocharging, features two Hitachi turbochargers. The smaller turbo kicks in first at lower RPMs, reducing “turbo lag” and improving low-end torque, while the larger turbo takes over at higher RPMs to deliver impressive top-end horsepower. The engine’s output peaks at approximately 320 horsepower, making it a powerhouse on the road.Applications of the Toyota 2JZ-GTE Engine
The 2JZ-GTE powered various legendary Toyota models, including:- Toyota Supra MK IV
- Lexus GS 300
- Lexus IS 300
Performance Comparison: Toyota 1JZ vs. 2JZ
1. Power and Torque
The 2JZ-GTE outshines the 1JZ-GTE in terms of raw power and torque, thanks to its larger displacement. With the ability to support 800 horsepower or more, the 2JZ-GTE takes the lead when it comes to sheer performance capabilities. On the other hand, the 1JZ-GTE, with its stock internals, can reliably produce about 650 to 700 horsepower.2. Engine Reliability and Strength
While both engines are known for their durability, the 2JZ-GTE’s engine block boasts more reinforcement, making it better suited for high-performance applications. Moreover, the 2JZ-GTE’s internals feature a “non-interference” design, preventing catastrophic engine damage in the event of valve train failure.3. Tunability and Modifiability
Both engines have proven to be highly tunable, offering endless opportunities for aftermarket modifications. Enthusiasts seeking to push the limits of performance will find ample support for both the 1JZ and 2JZ engines.4. Availability and Cost
While the 2JZ-GTE remains an icon, it also carries a higher price tag due to its fame in the “Fast and Furious” film franchise and its larger displacement. The 1JZ-GTE, however, provides an excellent alternative for those on a tighter budget. Its availability and affordability make it an attractive choice for engine swaps.Conclusion: Making the Right Choice
In the epic battle of Toyota’s 1JZ vs. 2JZ, both engines have proven their mettle, and the choice ultimately depends on your project’s objectives, budget, and performance goals. If you seek raw power and torque, the 2JZ-GTE stands tall as the ultimate contender. On the other hand, the 1JZ-GTE provides a reliable and budget-friendly option without sacrificing performance. Remember, the beauty of engine swaps lies in personalization and creativity. Whichever engine you choose, both the 1JZ and 2JZ are exceptional powerplants that have left an indelible mark on the automotive world.
