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

Item

Specification

Outer diameter
(mm {in})
87.465—87.495 {3.4436—3.4446}
Offset
(mm {in})
0.8 {0.03}
Compression height: A
(mm {in})
28.5{1.12}
Total height: B
(mm {in})
51.6{2.03}

am3zzn00002548
•  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.
am3zzn00002207