252
POWERHEAD
ASSEMBLY
Pistons and Connecting Rods
IMPORTANT: It is very important that the pis-
tons in this engine are oriented correctly.
New pistons are stamped “PORT” or “STBD,” and
“EXH.” These markings should be oriented to the
exhaust side (center) of the block. As another ref-
erence, the splash bowl on the dome of the piston
will be located toward the flywheel and opposite
the exhaust port.
IMPORTANT: It is also very important that the
connecting rods are installed with the alignment
dots and the diagonal oil hole facing up, toward
the flywheel.
Apply Needle Bearing Grease to the wrist pin
bearings. Install the bearings in the wrist pin bore.
Align bearings with Wrist Pin Bearing Tool,
P/N 336660.
Place the two wrist pin thrust washers on the tool
with flat side of the washers facing out.
Oil the wrist pin bore and wrist pin. Place connect-
ing rod, with bearings, washers, and tool, into the
piston with the alignment dots facing the top of the
piston.
1. Stamped markings 005283
1. Oil hole
2. Raised dots
002055
11
2
1
1. Wrist pin bearings
2. Tool, P/N 336660
31794
1. Wrist pin thrust washers DR3480
31793
46521
2
1
1
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