Pistons, Pins & Rings Specifications

PISTONS, PINS & RINGS SPECIFICATIONS

Application ⁽¹⁾

In. (mm)

Piston Clearance ⁽²⁾

.0004-.0022 (.010-.056)

Piston Pin

Diameter

.90531-.90551 (22.995-23.000)

Fit-In-Piston

.0004-.0008 (.010-.020)

Fit-In-Rod (Clearance)

.0007-.0017 (.018-.043)

Rings

Ring No. 1

End Gap

.012-.022 (.305-.559)

Side Clearance

.0013-.0031 (.033-.079)

Ring No. 2

End Gap

.030-.040 (.762-1.016)

Side Clearance

.0013-.0031 (.033-.079)

Ring No. 3

End Gap

.010-.030 (.254-.762)

Side Clearance

.0011-.0081 (.028-.206)

Ring Groove Depth

Ring No. 1

0.169-0.174 (4.294-4.424)

Ring No. 2

0.173-0.178 (4.389-4.519)

Ring No. 3

0.165-0.171 (4.204-4.334)

Ring Width

Ring No. 1

0.0463-0.0471 (1.176-1.197)

Ring No. 2

0.0581-0.0589 (1.476-1.497)

Ring No. 3

0.1122-0.1182 (2.850-3.002)

⁽¹⁾	Specifications have been revised due to General Motors TSB 57-61-17, dated 05/18/1995.

⁽²⁾	Piston clearance measured at 1.732 INCHES (44mm) from top of piston.