Crankshaft and Connecting Rods
Connecting Rod Installation
To minimize vibration, the connecting rods should
have the same weight mark.
Big End Cap [A]
Connecting Rod [B]
"OUT" Mark [C]
Weight Mark, Alphabet [D]
Diameter Mark [E]: "O" or no mark
If the connecting rods, big end bearing inserts, or
crankshaft are replaced with new ones, select the
bearing insert and check clearance with a plasti-
gage (press gauge) before assembling engine to be
sure the correct bearing inserts are installed.
Apply molybdenum disulfide oil solution to the inner sur-
face of upper and lower bearing inserts [A].
Apply a small amount of molybdenum disulfide oil solution
to the threads [B] and seating surface [C] of the connect-
ing rod big end bolts.
If bearing inserts are replaced, install them as follows.
Remove debris and clean the surface of inserts.
Do not apply molybdenum disulfide oil solution to the out-
side [D] of the inserts or the inside [E] of the connecting
rod and big end cap.
Wrong application of oil and grease could cause
Install the inserts so that their nails [F] are on the same
side and fit into the recess of the connecting rod and big
When installing the inserts [A], be careful not to damage
the insert surface with the edge of the connecting rod [B]
or the big end cap [C]. One way to install inserts is as
Installation [D] to Big End Cap
Installation [E] to Connecting Rod
Spare Dowel Pin [G]
Connecting Rod Big End Bolts [H]
Suitable Block [J]