Engine Mazda K8-ZE

The Mazda K8-ZE 1.8-liter V6 engine was produced in Japan from 1991 to 1998 and was installed in local versions of such popular models as Eunos, Efini MS-6 and Cronos. A deformed version with the K8-DE index was installed on the European and American markets.

The K-engine family includes: K8‑DE, KF‑DE, KF‑ZE, KJ‑ZEM, KL‑DE, KL‑G4, KL‑ZE.

The engine was installed on:

  • Mazda Cronos GE in 1991 – 1994;
  • Mazda Efini MS-6 GE in 1991 – 1994;
  • Mazda Eunos 500 CA in 1991 – 1994;
  • Mazda Eunos Presso EC in 1991 – 1998.

Specifications

Production years 1991-1998
Displacement, cc 1845
Fuel system distributed injection
Power output, hp 140 – 145
Torque output, Nm 155 – 160
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 75
Piston stroke, mm 69.6
Compression ratio 9.5
Features DOHC, VRIS
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.0
Fuel type 95
Euro standards EURO 3
Fuel consumption, L/100 km (for Mazda Eunos 500 1993)
— city
— highway
— combined
10.3
7.0
8.7
Engine lifespan, km ~275 000
Weight, kg 167 (with attachments)

Disadvantages of the Mazda K8-ZE engine

  • The cylinder block and cylinder head are cast from aluminum and are very afraid of overheating;
  • Also, power units of this series often consume oil after 150 thousand km;
  • On the same run, there are often leaks of lubricant from under the valve covers;
  • The timing belt changes every 100,000 km, however, when it breaks, the valves usually do not bend;
  • Hydraulic lifters do not tolerate cheap oil and can knock even up to 50,000 km.

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