Crankshaft and Connecting Rods
Apply molybdenum disulfide oil to the inner surface of the
upper and lower bearing inserts [A].
Apply molybdenum disulfide oil to the threads [B] and
seating surface [C] of the connecting rod nuts.
Install the inserts so that their nails [D] 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.
Install the cap on the connecting rod, aligning the weight
and diameter marks.
Install the crankshaft (see Crankshaft Installation).
Install each connecting rod on its original crankpin.
The connecting rod big end is bolted using the "plastic
region fastening method".
This method precisely achieves the needed clamping
force without exceeding it unnecessarily, allowing the
use of thinner, lighter bolts further decreasing connecting
There are two types of the plastic region fastening. One is
a bolt length measurement method and other is a rotation
angle method. Observe one of the following two, but the
bolt length measurement method is preferable because
this is a more reliable way to tighten the big end nuts.
The connecting rod bolts are designed to stretch
when tightened. Never reuse the connecting rod
bolts. See the table below for correct bolt and nut
Be careful not to overtighten the nuts.
The bolts must be positioned on the seating surface
correctly to prevent the bolt heads from hitting the