Cylinder Block Construction - Mazda 2006 MX-5 Service Highlights

CYLINDER BLOCK CONSTRUCTION [LF]
• The cylinder block is made of aluminum alloy, which is cast with the cast iron liner, improving heat radiation and
decreasing weight.
• The cylinder block is a deep skirt type and forms the ladder frame structure with the integrated main bearing
cap. The water jacket of the cylinder block is a closed deck type. Its higher rigidity reduces vibration and noise.
• The cylinder block has the oil separator cover on the opposite side of the fresh air intake, the PCV (positive
crankcase ventilation) valve is installed in the oil separator. Together they function to improve blow-by gas
ventilation efficiency.
• There is no positioning tab where the upper and lower main bearings are installed.
• The main bearing cap bolts are torque-to-yield type and cannot be reused.
OIL SEPARATOR COVER
• The service hole for installing the SST, which is
used for detecting the No.1 cylinder TDC position,
is located at the right side of the cylinder block.
The TDC position can be detected when the SST
edge touches the cutting surface of the No.1
counter weight.
End Of Sie
MECHANICAL
CYLINDER BLOCK
PCV VALVE
MAIN BEARING CAP
SERVICE HOLE
OIL SEPARATOR COVER ATTACHMENT PART
CYLINDER BLOCK
NO.1 CYLINDER
SST
NO.1 CYLINDER TDC POSITION
NO.1 PISTON
SST
CRANKSHAFT COUNTER
E5U011010300N01
01–10
E5U110ZT5009
E5U110ZT5010
01–10–3