SERVICE MANUAL
CONNECTING RODS, PISTONS, RINGS & SLEEVES
Section 5
SPECIFICATIONS
DIMENSIONS
CONNECTING RODS:
Number of rings per piston ........................................................................................................................................ 2
Type (face and finish):
Top Ring
.....................................................................................................Full Keystone (barrel face) -Chrome
Intermediate Ring
(300 Series) and (400 Series N.A.) ................................................................... Rectangular (tapered face) - Chrome
(Early Model 400 Series T.C.) ........................................................................ Half Keystone (tapered face) - Chrome
(Late Model 400 Series T.C.) ..........................................................................Full Keystone (tapered face) - Chrome
Ring Gap with New Sleeve:
Top Ring
(300 Series) ..........................................................................................................................0.30 mm (0.012 in.)
0.64 mm (0.025 in.)
(400 Series) ...........................................................................................................................0.41 mm (0.016 in.)
0.74 mm (0.029 in.)
Intermediate Ring
(300 Series) ...........................................................................................................................0.51 mm (0.020 in.)
Rectangular Ring
0.84 mm (0.033 in.)
(400 Series N.A.)
Rectangular Ring with Narrow Gap**
D-414 w/Eng. S/N 126948 and below
D-436 w/Eng. S/N 82716 and below
D-466 w/Eng. S/N 54268 and below.............................................................................0.51 mm (0.020 in.)
0.84 mm (0.033 in.)
Rectangular Ring with Wide Gap**
D-414 w/Eng. S/N 126949 and up
D-436 w/Eng. S/N 82717 and up
D-466 w/Eng. S/N 54268 and up .................................................................................1.65 mm (0.065 in.)
1.98 mm (0.078 in.)
(400 Series T.C.)
Early Model with Half Keystone Ring ....................................................................................0.51 mm (0.020 in.)
0.84 mm (0.033 in.)
***Rings with wide gaps and narrow gaps can be intermixed in service.
***May be used with old or new piston. New full keystone ring with wide gap must not be used with crankcase mounted
ventilation system.
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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