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It’s time to consider the design features of the next generation of Toyota engines, starting with the most common ZR series.

Application
Engines of the ZR series debuted in the fall of 2006 in the domestic market, as part of a large-scale upgrade of the Corolla and Premio families, in the summer of 2007 the serial production of the first engines with Valvematic began. New motors quickly took the place of predecessors in the line: 3ZZ-FE ⇒ 1ZR-FE / FAE, 1ZZ-FE ⇒ 2ZR-FE / FAE, 1AZ-FE / FSE ⇒ 3ZR-FE / FAE. In the early 2010s, they were installed on a wide variety of models of classes B (Yaris), C (family Corolla), D (family Premio), mid-size SUVs (RAV4) and vans (Noah).

Specifications

* – internal designation of a Chinese-made 1ZR-FE engine for the Chinese market.

Compared to modern counterparts from other manufacturers, the performance of 1.6 and 1.8 vm engines looks good, but 2.0 and 2.0 vm do not stand out from the total mass.
As for the efficiency of cars with such engines, it can be rated from acceptable to good (in the conditional category “10 liters”); low consumption at cruising speeds on the highway and a significant dependence on temperature overboard. Although the aggregation of new engines with CVTs that are more efficient in this respect plays a significant role, since, in conjunction with classic hydromechanical automatic machines, the ZRs show at best “average” efficiency.

Cylinder block
– The engine uses an aluminum (alloy) cylinder block with an open cooling jacket.
– The sleeves are fused into the material of the block, and their special uneven outer surface contributes to the most durable connection and improved heat dissipation. The wall thickness between the cylinders is only 7 mm, the engine overhaul by the manufacturer is not provided by definition. And although circumstances sometimes force enthusiasts to bore or remake disposable Toyota blocks, the final result of such a “collective farm” can hardly be called a “Toyota”.

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