PISTON, PISTON RING, PISTON PIN CONSTRUCTION [LF, L3]
id0110001006a2
• The pistons are made of heat resistant, highly conductive aluminium alloy.
• The piston skirt is coated with graphite to reduce friction.
• Offset pistons are used to reduce piston-slapping noise.
• To prevent the piston from being reassembled in the wrong direction, an arrow mark pointing to the front (←) is located on the piston.
• Pistons and connecting rods cannot be disassembled because they are shrinkage fit.
• The L3 engine model piston has a valve recess.
Piston specification
|
ITEM
|
LF
|
L3
|
|
Outer diameter
|
(mm {in})
|
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}
|
|
Compression height: HC
|
(mm {in})
|
28.5 {1.122}
|
28.5 {1.122}
|
|
Piston height: HD
|
(mm {in})
|
51.0 {2.0078}
|
51.0 {2.0078}
|
• The following piston rings have been adopted: A barrel face ring for the top ring, a taper-under cut ring for the second ring, two scuff rings and an expander for the oil ring.
• The piston pin is made of chrome steel alloy with superior rigidity.
• The connecting rod and the piston pin are shrinkage fit and cannot be disassembled.
