Mazda 6. Manual - part 6
ENGINE
B–13
B
PISTON, PISTON RING, PISTON PIN
A6E222411010T01
Structure
•
The pistons are made of aluminium alloy, which withstands heat and is highly conductive.
•
The piston skirt is coated with graphite to reduce friction.
•
The offset pistons are used to reduce piston-slapping noise.
•
To prevent the piston from being reassembled in the wrong direction, the front mark (
←
) is on the piston.
•
Pistons and connecting rods cannot be disassembled because they are shrinkage fit.
•
L3 engine models piston has a valve recess.
Piston Specification.
.
•
The following piston rings are used. Top ring: barrel face ring, Second ring: taper under cut ring, Oil ring: two
scuff rings and an expander.
•
The piston pin is made of chrome steel alloy, which has superior rigidity.
•
The connecting rod and the piston pin are shrinkage fit, and cannot be disassembled.
ITEM
L8
LF
L3
Outer diameter
mm {in}
82.965—82.995
{3.2664—3.2675}
87.465—87.495
{3.4435—3.4435}
87.465—87.495
{3.4435—3.4435}
Offset quantity
mm {in}
0.8 {0.04}
0.8 {0.04}
0.8 {0.04}
Compression
height:HC
mm {in}
28.5 {1.122}
28.5 {1.122}
28.5 {1.122}
Piston height: HD
mm {in}
51.0 {2.0078}
51.0 {2.0078}
51.0 {2.0078}
AME2224N008
1
Piston side view
2
Offset
3
Outer diameter
4
Piston upper surface view
5
Install arrow facing engine front
6
Engine front side
7
Valve rises