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Toyota ZZ engines.

The Toyota ZZ engine is part of the Toyota Corolla engine family is a inline-4 piston engine series. The ZZ series uses an aluminum engine block and aluminum DOHC 4-valve cylinder heads, a first for Toyota. a common design now. The deck is open, which saves weight and allows for greater precision in construction, also results in less cylinder strength, really only a problem for those who want to turbocharge or supercharge their engines with a high degree of boost. On the other hand, the bottom end has been strengthened with a full-size main bearing girdle.The valve camshafts are chain driven.

The two 1.8 L members of the family, the 1ZZ and 2ZZ, use different bore and stroke. The former was optimized for economy and torque, while the latter is a “square” design optimized for high-RPM power. The ZZ family replaced the extremely popular cast-iron 4A engines.

The seemingly complicated identification system Toyota gives its engines is actually quite simple. The first number denotes the engine block’s generation. The next one or two letters, followed by a hyphen, specify the engine family. The remaining letters following the hyphen list the engine’s features. For example, the 2ZZ-GE can be decoded as being the second generation of the ZZ engine series and features a performance head – wide angle valves (G) and Electronic Fuel Injection (E).

To discover more about Toyota engines, read more about the different applications on our GotEngines.com Blog, learn how to identify an engine should you be in the market for a replacement engine, or looking for some repair parts.

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