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| Oldsmobile Engine >> PISTON TO ROD ORIENTATION ON OLDS V8
Piston To Rod Orientation On
Oldsmobile V-8 Engines
AERA members have reported confusion over piston to rod orientation on Oldsmobile V-8 engines. The confusion centers around the fact that not all Oldsmobile V-8 connecting rods have squirt holes at the parting lines. It has also been reported that engines using the later type connecting rod without the squirt hole have random piston to rod orientation.
When using connecting rods with a squirt hole, assemble the piston to the rod with the squirt hole facing the center (inboard) of the engine.
When using connecting rods without squirt holes, there is no specified piston to rod orientation. Because these rods have neither a squirt hole or front and rear side, they can be assembled to the pistons at random. For purposes of uniformity, it is recommended that a specific procedure be adopted for assembling this type of rod to the pistons. A good choice would be with bearing
tangs to the outside of the engine, which is common with other GM engines.
The AERA Technical Committee
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