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Mazda Z engine

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Title: Mazda Z engine  
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Subject: Mazda Demio, Mazda MZR engine, List of Mazda engines, Mazda L engine, ZY
Collection: Mazda Engines
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Mazda Z engine

Mazda Z engine
Mazda ZY-VE engine
Manufacturer Mazda
Production 1995-2011
Combustion chamber
Configuration Straight-4
  • convert
  • cc
  • cuin
Cylinder bore
Piston stroke
Cylinder head alloy Aluminum
Valvetrain DOHC
Oil system Wet sump
Cooling system Water-cooled
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 belt. The block of the 98-02 Z5, Z6 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.


  • Z5 1
  • ZJ 2
  • ZY 3
  • ZL 4
  • Z6/M 5
  • External links 6


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 and .

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 and .


Mazda ZJ-VEM

The 1.3 L (1348 cc) ZJ (74x78.4 mm) is available with either continuous cam-phasing VVT ZJ-VE (91 hp) or a high-efficiency Miller cycle ZJ-VEM (90 hp).



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).


1.6 L (1598 cc, 105 hp) ZM-DE (78x83.6 mm) The ZM engine, driven by a timing chain, is also known as the Z6, it has an identical bore, yet slightly longer stroke than the ZL as well as a revised head with round intake and exhaust ports. It has exactly the same bore and stroke as the previous generation B6.

The 1.5 L (1498 cc, 130 hp) ZL-VE and 1.6 L (1598 cc, 105 hp) ZM-DE are closely related engines with an equal bore (78mm) and share some major parts. The ZL has a stroke of 78.4 mm whilst the ZM has 83.6 mm.


External links

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