Piston Ring, Engine

Pistons and Rings





Diameter
Standard 93.950 to 93.960 mm (3.6988 to 3.6992 in.)
Minimum 93.815 mm (3.6935 in.)

Piston Oil Clearance
Standard 0.040 to 0.062 mm (0.00157 to 0.00244 in.)
Maximum 0.385 mm (0.0152 in.)

Ring Groove Clearance





Standard Ring Groove Clearance
No. 1 ring 0.020 to 0.070 mm (0.000787 to 0.00276 in.)
No. 2 ring 0.020 to 0.060 mm (0.000787 to 0.00236 in.)
Oil ring expander 0.070 to 0.145 mm (0.00276 to 0.00571 in.)

Ring End Gaps





Standard end gap
No. 1 ring 0.25 to 0.35 mm (0.00984 to 0.0138 in.)
No. 2 ring 0.40 to 0.50 mm (0.0157 to 0.0197 in.)
Oil ring expander 0.10 to 0.40 mm (0.00394 to 0.0157 in.)
Maximum end gap
No. 1 ring 0.42 mm (0.0165 in.)
No. 2 ring 0.55 mm (0.0217 in.)
Oil ring expander 0.45 mm (0.0177 in.)

Piston Pin Oil Clearance
Standard Piston Pin Hole Inside Diameter
Mark A 21.998 to 22.001 mm (0.86606 to 0.86618 in.)
Mark B 22.001 to 22.004 mm (0.86618 to 0.86630 in.)
Mark C 22.004 to 22.007 mm (0.86630 to 0.86642 in.)

Standard Piston Pin Diameter
Mark A 21.998 to 22.001 mm (0.86606 to 0.86618 in.)
Mark B 22.001 to 22.004 mm (0.86618 to 0.86630 in.)
Mark C 22.004 to 22.007 mm (0.86630 to 0.86642 in.)

Piston Pin To Piston Oil Clearance
Standard -0.002 to 0.004 mm (-0.0000787 to 0.000157 in.)
Maximum 0.015 mm (0.000591 in.)