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PISTON, PISTON RING, PISTON PIN CONSTRUCTION [L8, LF, L3]

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• 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.

Piston Specification.

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: A | mm {in} | 28.5 {1.122} | 28.5 {1.122} | 28.5 {1.122}
Piston height: B | mm {in} | 51.0 {2.0078} | 51.0 {2.0078} | 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
7 | Valve rises

• The following piston rings have been adopted: Barrel face ring for top ring, taper under cut ring for second ring, two scuff rings and an expander for 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 | Side rail
5 | Expander