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]
Weight Mark, Alphabet [C]
Diameter Mark [D]: "
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 [A] to the inner
surfaces of upper and lower bearing inserts.
Do not apply any grease or oil [B] to the cap inside and
cap insert outside.
Install the inserts so that their nails [C] are on the same
side and fit them into the recess of the connecting rod and
Wrong application of oil and grease could cause
When installing the inserts [A], be careful not to damage
the insert surface with the edge of the connecting rod [B]
or the cap [C]. One way to install inserts is as follows.
Installation [D] to Cap
Installation [E] to Connecting Rod
Spare Dowel Pin [G]
Connecting Rod Bolts [H]
Remove debris and clean the surface of inserts.
Apply molybdenum disulfide oil solution to the threads
and seating surfaces of the big end nuts and bolts.
Install the crankshaft (see Crankshaft Installation).
Install each connecting rod on its original crankpin.
Install each connecting rod so that its oil jet [A] faces the
exhaust side (the front [B]) (see Engine Oil Flow Chart
in the Engine Lubrication System chapter).
Install the cap on the connecting rod, aligning the weight
and diameter marks.
" or no mark