Nissan and Datsun Workshop Service and Repair Manuals

Piston Ring: Specifications

DIMENSIONS

Ring End Gap:

Top:

Standard  ...............................................................................................................................................  0.040 - 0.080 mm (0.0016 - 0.0031 inch)
Limit  .....................................................................................................................................................................................  0.1 mm (0.004 inch)

Second:

Standard  ...............................................................................................................................................  0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Limit  ....................................................................................................................................................................................   0.1 mm (0.004 inch)

Oil Rail:

Standard  ...............................................................................................................................................  0.065 - 0.135 mm (0.0026 - 0.0053 inch)
Limit  ....................................................................................................................................................................................  0.1 mm (0.004 inch) 

Ring Side Clearance:

Top:

Standard  ...................................................................................................................................................  0.28 - 0.52 mm (0.0110 - 0.0205 inch)
Limit  .....................................................................................................................................................................................  0.5 mm (0.020 inch)

Second:

Standard [1]  ..............................................................................................................................................  0.45 - 0.69 mm (0.0177 - 0.0272 inch)
Standard [2] ................................................................................................................................................  0.55 - 0.70 mm (0.0217- 0.0276 inch)
Limit  ....................................................................................................................................................................................   0.5 mm (0.020 inch)

Oil Rail:

Standard  ...................................................................................................................................................  0.20 - 0.69 mm (0.0079 - 0.0272 inch)
Limit  ....................................................................................................................................................................................   0.5 mm (0.020 inch)

[1]  For rings punched with R or T.
[2]  For rings punched with N.