Mechanical; Cylinder Head Cover Construction [Lf]; Cylinder Head Construction; Cylinder Head Gasket Construction [Lf] - Mazda 2006 MX-5 Service Highlights

CYLINDER HEAD COVER CONSTRUCTION [LF]

• The cylinder head cover is made of integrated
plastic, which is lightweight and sound absorbent.
• The oil filler cap is a bayonet type.
• The boss for installing the camshaft position
(CMP) sensor is provided at the rear of the
cylinder head cover.
• The cylinder head cover has a hole for installing
the oil control valve (OCV).
• A dipstick insertion hole has been equipped to the
cylinder head cover.
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CYLINDER HEAD CONSTRUCTION [LF]
• The cylinder head is made of a high heat conductive, lightweight aluminum alloy, which is quenched.
• Compact, pentroof-type combustion chambers have been adopted. The spark plugs are mounted at the top of
the combustion chambers to improve combustion efficiency.
• The intake/exhaust port layout is a cross flow type, (the angle between two valves is 39°, the two intake valves
and the two exhaust valves per cylinder) which improves air intake/exhaust efficiency.
• The cylinder head bolts are torque-to-yield type to be tightened in five motions to insure tightening stability
and cannot be reused.
CYLINDER HEAD BOLT
EXHAUST SIDE
ENGINE FRONT SIDE
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CYLINDER HEAD GASKET CONSTRUCTION [LF]

• Cylinder head gaskets are 2 layer-metal gaskets.
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01–10–2

MECHANICAL

CAMSHAFT POSITION (CMP)
SENSOR ATTACHMENT PART
INTAKE SIDE
EXHAUST PORT
OIL CONTROL VALVE (OCV)
ATTACHMENT HOLE
DIPSTICK INSERTION HOLE
THE ANGLE BETWEEN
TWO VALVES
BEAT PLATE
A-A SECTIONAL VIEW
SHIM
BEAT PLATE
E5U011010100N01
E5U110ZT5041
E5U011010100N02
INTAKE PORT
E5U110ZT5007
E5U011010271N01
A
A
E5U110ZT5008