Toyota ZZ engine

The Toyota ZZ engine is a family of straight-four piston engines. It uses a die-cast aluminium block with thin press-fit cast iron cylinder liners, aluminium DOHC four-valve cylinder heads and chain-driven camshafts, and it replaced the hugely popular cast-iron-block 4A and 7A engines of the A family. The two 1.8 litre members differ in design: the 1ZZ was optimised for economy with torque emphasised at lower revs, while the 2ZZ is a square design optimised for high-rev torque and so gives higher peak power. The 1ZZ-FE was built at plants in West Virginia, Canada and Japan. The 2ZZ-GE was built in Japan in collaboration with Yamaha, uses VVTL-i, has an 11.5 to 1 compression ratio that calls for high-octane gasoline, and remains one of the highest-revving and highest-output-per-litre mass-production engines ever made, winning the International Engine of the Year class for 1.4 to 1.8 litre engines in 2002. It powered the Celica GT-S, Corolla T-Sport and the Lotus Elise and Exige.