Mazda Z engine
| Mazda Z engine | |
|---|---|
Mazda ZY-VE engine
|
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| Overview | |
| Manufacturer | Mazda |
| Production | 1995-2011 |
| Combustion chamber | |
| Configuration | Straight-4 |
| Displacement |
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| Cylinder bore |
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| Piston stroke |
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| Cylinder block alloy | |
| Cylinder head alloy | Aluminum |
| Valvetrain | DOHC |
| Combustion | |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Chronology | |
| Predecessor | Mazda B engine |
| Successor | Mazda SKYACTIV-G engine |
The Mazda Z-series is a smaller inline 4-cylinder gasoline engine ranging in displacements from 1.3L to 1.6L. 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. 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.
As of 2011, Mazda will cease to develop the Z-engine, to be replaced by the SkyActiv P-engine.
The 1.5 L (1489 cc, 92 hp) Z5-DE was used in the 1995-1998 Mazda Protegé, Mazda Lantis (Astina) and in Mazda Familia Neo (1994–1997). Bore and stroke were 75.3 mm (3.0 in) and 83.6 mm (3.3 in).
The Z5 engine was the first iteration for all newer Z-series lines of Mazda engines. The Z series of engine are totally new design but based on B-series. The block, block internals and oil-pan are similar to the B series of engines but the DOHC head is a completely new design.
The block is cast iron, the oil-pan is a 2-piece design with an upper aluminum and lower stamped steel, piston oil squirters are standard. The cylinder head was a compact design with round intake and exhaust ports. JDM versions produce 97 hp (72 kW) and 110 hp (82 kW).
The 1.3 L (1348 cc) ZJ (74x78.4 mm) is available with either continuous cam-phasing VVT ZJ-39
VE(91 hp) or a high-efficiency Miller cycle ZJ-VEM (90 hp).
Applications:
1.5 L (1498 cc, 111 hp) ZY-VE (78x78.4 mm)
1.5 L (1498 cc, 88 hp EEC, 110 hp JIS, ) ZL-DE (78x78.4 mm)
1.5 L (1498 cc, 130 hp JIS) ZL-VE (78x78.4 mm) The 1.5L ZL-VE makes more power than the slightly larger 1.6L Z6/M-DE its due to variable valve timing on the intake cam (S-VT).
Applications:
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Wikipedia