PISTON, PISTON RING, PISTON PIN CONSTRUCTION [L8, LF, L5]


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•  The pistons are made of aluminium alloy, which withstands heat and is highly conductive.
•  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.
•  The LF, L5 engine model piston has valve recesses on the intake side.
•  Pistons and connecting rods of the L8, LF engine model cannot be disassembled because they are shrinkage fit.

Piston Specification.

ITEM

L8

LF

L5

Outer diameter
mm {in}
82.965—82.995 {3.2664—3.2675}
87.465—87.495 {3.4436—3.4446}
88.965—88.995 {3.5026—3.5037}
Offset quantity
mm {in}
0.8 {0.031}
0.8 {0.031}
0.8 {0.031}
Compression height: A
mm {in}
28.5 {1.12}
28.5 {1.12}
28.5 {1.12}
Piston height: B
mm {in}
51.0 {2.01}
51.0 {2.01}
50.6 {1.99}

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•  The following piston rings have been adopted: 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, which has superior rigidity.
•  Connecting rods and piston pin of the L8, LF engine model cannot be disassembled because they are shrinkage fit.
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