Mazda Z 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. 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-engine as a new, more economical option with vehicles that also ran the Mazda Z-engine. Production was finally halted in 2014, being the last year of the Demio/Mazda2, Verisa as well as Axela/Mazda3 of their generations. From here on in, Mazda moved on to the full SkyActiv architecture vehicles including running only the aforementioned SkyActiv G-engine but now offering it in also larger displacements, as well as a new SkyActiv D-engine turbo-diesel.

Z5

The Z5-DE was used in the 1995-1998 Mazda Protegé, Mazda Lantis and in Mazda Familia Neo. Bore and stroke were.
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. There was also lean-burn version introduced in August 1995; this model produces and sees gas mileage improvements of ten to fifteen percent in the standard Japanese test cycle.

ZJ

The ZJ is available with either continuous cam-phasing VVT ZJ-VE or a high-efficiency Miller cycle ZJ-VEM.
Applications:
ZY-VE
EEC, JIS, ZL-DE
JIS ZL-VE
The 1.5 L ZL-VE makes more power than the slightly larger 1.6 L Z6/M-DE its due to variable valve timing on the intake cam.
Applications:
ZM-DE
The ZM engine, also known as the Z6, 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 ZL-VE and ZM-DE are closely related engines with an equal bore and share some major parts. The ZL has a stroke of whilst the ZM has.
Applications: