• 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, a front mark (¨) is on the piston.
• Pistons and connecting rods cannot be disassembled because they are shrinkage fit.
Piston Specification.
|
Outer diameter
|
mm {in}
|
87.465-87.495 {3.4435-3.4446}
|
||
|
Offset quantity
|
mm {in}
|
0.8 {0.04}
|
||
|
Compression height: HC
|
mm {in}
|
28.5 {1.122}
|
||
|
Piston height: HD
|
mm {in}
|
51.0 {2.0078}
|
||
|
1
|
Piston side view
|
|
2
|
Offset
|
|
3
|
Outer diameter
|
|
4
|
Piston upper view
|
|
5
|
Install arrow facing engine front
|
|
6
|
Engine front side
|
• The following piston rings have been adopted: Barrel face ring for top ring, taper under cut ring for second ring, 2 scuff rings and an expander for the oil ring.
• The piston pin is made of chrome steel alloy, which has superior rigidity.
• The connecting rod and the piston pin are shrinkage fit, so that it cannot be disassembled.
|
1
|
Top ring sectional view
|
|
2
|
Second ring sectional view
|
|
3
|
Oil ring sectional view
|
|
4
|
Expander
|
|
5
|
Side rail
|