Pontiac Workshop Service and Repair Manuals

Piston Ring: Specifications
Piston, Pins & Rings

PISTON

Clearance ......................................................................................................................................................................  .051mm-.073mm (.0020"-.0028")

PISTON RING

Compression

Groove Clearance
Top  ................................................................................................................................................................................  .03mm-.08mm (.001"-.003")
Second  ...........................................................................................................................................................................  .03mm-.08mm (.001"-.003")
Gap
Top  ............................................................................................................................................................................  .25mm-.50mm (.0010"-.0020")
Second  .......................................................................................................................................................................  .25mm-.50mm (.0010"-.0020")

Oil

Groove Clearance  .......................................................................................................................................................................  .20mm (.008") Max.
Gap  ............................................................................................................................................................................  0.51mm-1.40mm (.020"-.055")

PISTON PIN

Diameter  ....................................................................................................................................................  22.9937mm-23.0015mm (.9052"-.9056")
Clearance  .........................................................................................................................................................  .0065mm-.0091mm (.00025"-.0007")
Fit in Rod-Press  ................................................................................................................................................  .020mm-.0515mm (.00078"-.0021")