3ZR-FE/FAE 2.0L Engine

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In 2007, Toyota introduced a 2.0-liter four-cylinder gasoline engine, which came out of the ZR series. The 3ZR version became successor for the 1AZ engines. The 3ZR-FE engine is used mostly in front-wheel drive vehicles such as Toyota Corolla, Avensis, and 2WD RAV4. The 3ZR-FAE is offered as a power unit for both FWD and AWD/4WD models (Toyota C-HR or RAV4).
like the 1.8L 2ZR-FE engine, the 2.0-liter version has a die-cast aluminum cylinder block with spiny-type cast iron liners. The distance between its cylinder bores is only 7 mm. So, the engine block is very light and compact. Enlarged displacement was achieved by installing a new crankshaft with increased stroke by 9.3 mm. Also, the crankshaft is placed inside with 8 mm offset to the intake side of the bore centers. The cylinder bore size was unchanged. The engine got steel connecting rods and aluminum pistons with full floating-type piston pins, resin-coated piston skirts, and low tension piston rings. The 3ZR engine block is equipped with piston oil jets as well.

The 3ZR engine has an aluminum 16-valve cylinder head with chain-driven dual overhead camshafts. Valvetrain consists of two intake valves and two exhaust valves per each cylinder, hydraulic lash adjusters, and low-friction roller rocker arms. The engine uses a roller chain with an 8 mm pitch. The 3ZR-FE engine has a dual VVT-i (Variable Valve Timing – intelligent). The 3ZR-FAE engine has a dual VVT-I and Valvematic variable lift system for the intake valves. The Valvematic system offers continuous adjustment to intake valve lift and timing.

3ZR-FE/FAE engines have a sequential fuel injection system with 12-hole injectors and the latest Toyota’s ignition system DIS with Electronic Spark Advance (ESA). Each cylinder was equipped with thin-electrode type iridium-tipped spark plug and individual ignition coil. The intake manifold made from plastic for weight reduction. It is fitted with a linkless-type throttle body and Toyota’s Electronic Throttle Control System – intelligent (ETCS-i). Two three-way catalytic converters are integrated into a stainless steel exhaust manifold.

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