PISTON, PISTON RING, PISTON PIN CONSTRUCTION [MZR 2.0 DISI i-stop]
id011037100600
• 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 piston has valve recesses on the intake side.
• Pistons and connecting rods cannot be disassembled because they are shrinkage fit.
• The piston skirt is coated with graphite to reduce friction.
Piston specification
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Item
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Specification
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Outer diameter
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(mm {in})
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87.465—87.495 {3.4436—3.4446}
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Offset
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(mm {in})
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0.8 {0.03}
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Compression height: A
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(mm {in})
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28.5{1.12}
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Total height: B
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(mm {in})
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51.6{2.03}
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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.
