Mazda Z engine

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Mazda Z engine
Mazda ZY-VE engine
Overview
Manufacturer	Mazda
Production	1995-2014
Layout
Configuration	Inline 4
Displacement	1.3 L; 82.3 cu in (1,348 cc) 1.5 L; 90.9 cu in (1,489 cc) 1.5 L; 91.4 cu in (1,498 cc) 1.6 L; 97.5 cu in (1,598 cc)
Cylinder bore	74 mm (2.91 in) 75.3 mm (2.96 in) 78 mm (3.07 in)
Piston stroke	78.4 mm (3.09 in) 83.6 mm (3.29 in)
Cylinder block material	Cast iron, Aluminum
Cylinder head material	Aluminum
Valvetrain	DOHC 4 valves x cyl. with VVT
Combustion
Fuel system	Fuel injection
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	88 hp (66 kW; 89 PS) 90 hp (67 kW; 91 PS) 91 hp (68 kW; 92 PS) 92 hp (69 kW; 93 PS) 105 hp (78 kW; 106 PS) 110 hp (82 kW; 112 PS) 111 hp (83 kW; 113 PS) 130 hp (97 kW; 132 PS)
Chronology
Predecessor	Mazda B engine
Successor	Mazda SKYACTIV-G engine

The Mazda Z-series is a smaller gasoline inline-four engine ranging in displacements from 1.3 L to 1.6 L. They are the evolution of the cast-iron block B-engine.

The Z-engine has 16-valves operated by dual overhead camshafts, which are in turn driven by a timing chain (ZJ/Z6/ZY only). The block of the 98-02 Z5, ZM and ZL engine is cast iron same as the earlier B series of engines.

Other Z engines have aluminum alloy block and head, with cast-iron cylinder liners. The block features split upper and lower block assembly for added strength and rigidity, special long intake manifold for added torque, S-VT continuous variable valve timing, and a stainless steel 4:1 exhaust header.

In 2011, Mazda started to introduce the SkyActiv-G as a new, more economical option for vehicles that were equipped with the Mazda Z-engine. Production of the Z-series halted in 2014, being the last year of the Mazda2, Verisa as well as Mazda3 of their generations. Mazda moved on to the full SkyActiv architecture in their vehicle lineup, including running only the aforementioned SkyActiv-G engine, now offered in larger displacements, alongside a new SkyActiv-D turbo-diesel engine.