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Pistons, Piston Pins & Piston Rings Specifications

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PISTONS, PINS & RINGS

Application In. (mm)
Pistons
Diameter
Standard 4.10474 (104.26065)
.010 Undersize 4.11474 (104.51465)
.020 Undersize 4.12474 (104.76865)
.030 Undersize 4.09537 (104.02265)
Clearance .0044-.0061 (.1118-.1549)
Piston Height Above Cylinder Block .010-.031 (.254-.787)
Pins
Diameter 1.3079-1.3081 (33.220-33.226)
Piston Fit .0003-.0007 (.007-.018)
Rod Fit .0004-.0009 (.010-.023)
Rings
No. 1
End Gap .014-.024 (.35-.61)
Side Clearance (1)
No. 2
End Gap .062-.072 (1.57-1.83)
Side Clearance .002-.004 (.05-.10)
No. 3 (Oil)
End Gap .012-.024 (.30-.61)
Side Clearance .002-.004 (.05-.10)
(1) For measuring of side clearance, see PISTON RINGS  under CYLINDER BLOCK ASSEMBLY under OVERHAUL.