The 2JZ-GE was the more common version intended for run-of-the-mill cars, while the GTE was a factory turbocharged high-performance motor.īoth engines share the same bore and stroke, but the GTE came with several noticeable upgrades over its naturally aspirated version. The added stroke length meant a taller block deck and longer connecting rods were necessary. The cylinder diameter is identical to its predecessor though. With a displacement of 2,997 cc and a long stroke of 86 mm, the engine was a significant upgrade over the 1JZ. It’s a straight-six with dual-overhead cams, an iron block, and aluminum cylinder heads. The 2JZ was released in the early ‘90s, and its development was largely based on the 1JZ layout. Torque: 320 lb-ft (JDM), 333 lb-ft (North America) 3,600 rpm Layout: Inline 6 cylinder Turbocharged DOHC 24V With that, let’s move on to its successor, the 2JZ-GTE. The modified engine design brought about a 50% increase in low-end torque versus the previous generation. The revised design included smaller exhaust ports, which improved the exhaust velocity, making spooling the turbo faster. The reason behind that was its new cylinder head. If anything, torque was improved by 15 lb-ft. But the most significant change was the replacement of two turbochargers with a single turbo. It also got new shims with titanium nitride coating for reduced friction. This second-gen turbo 1JZ came with several noticeable upgrades like variable valve timing (VVT-i), a reworked cylinder head, and modified water jackets for better cooling. Internal dimensions are the same as the 1JZ-GE, including the bore and stroke, making the engine rev higher than its long-stroke predecessor, the 7M-GTE.Ī few years after its introduction, the 1JZ-GTE was given an update. In terms of output, the 1JZ-GTE in its stock factory spec puts out 276 hp and 268 lb-ft of torque. The straight-six twin-turbocharged motor comes with a factory boost of 10 psi (0.7bar), has a compression ratio of 8.5:1, has forged pistons and connecting rods and upgraded injectors to 380 cc. All while factoring in tunability, desirability, and value. We’ll discuss specifications, brief history, and compare them from an enthusiast’s standpoint. While we know 1JZ is physically smaller than the 2JZ, the question is, what makes them so different? In this article, we’ll compare the two and conclude with out top recommendation. They definitely brought in their A-game when designing these. The overengineering you’ll see on these engines is classic Toyota. Much like the RB-series, JZ engines have quite the following, owing to their durability and longevity. It has been nearly three decades since these were developed, but fast-forward to 2022 and they’re the most desirable engines even today. Very much considered to be at par, except in displacement figures, the JZ twins power quite a few iconic cars. Often considered to be engineering masterstrokes, both the 1JZ and 2JZ are well and truly on the top. Toyota’s JZ-series engines are a big deal in the motoring community.
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