The Toyota ZZ engine family is a straight-4 piston engine series. The ZZ series uses an aluminum engine block and aluminum DOHC 4-valve cylinder heads, a first for Toyota. The two members of the family, the 1ZZ and 2ZZ, are both 1.8 L engines, but 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.
1ZZ-FE
The 1ZZ-FE is a 1.8 L (1794 cc) version built in Buffalo, West Virginia and Cambridge, Ontario. Bore is 79 mm and stroke is 91.5 mm. Output is 130 hp (97 kW) at 6000 RPM with 125 ft·lbf (169 N·m) of torque at 4200 RPM. The cylinders of 1ZZ engines are lined with cast iron. It uses SFI fuel injection, has VVT-i (on later versions) and features fracture-split forged powder metal connecting rods, a one-piece cast camshaft, and a cast aluminum intake manifold.
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1ZZ-FED
The 1ZZ-FED is similar to the 1ZZ-FE but is built in Shimoyama, Japan . Output is 140 hp (104 kW) at 6400 RPM with 126 ft·lbf (171 N·m) of torque at 4200 RPM. It uses MFI fuel injection and VVT-i and substitutes forged steel connecting rods.
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2ZZ-GE
The 2ZZ-GE is a 1.8 L (1796 cc) version built in Japan. Bore is 82 mm and stroke is 85 mm. Output is 180 hp (134 kW) at 7600 RPM with 130 ft·lbf (176 N·m) of torque at 6800 RPM. It uses MFI fuel injection, has VVTL-i, and features forged steel connecting rods. Power output for this engine varies depending on the application and tuning, with the Lotus Elise offering 190 hp but the Pontiac Vibe, Toyota Corolla and Toyota Matrix versions only developing 170 hp .
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