The correct answer is both the tech are right that a rod heater can be used to install semi-floating wrist pins and semi-floating wrist pins can be pressed into the rods.
After some kind of friction secures the pin to the connecting, the piston can freely pivot inside the bosses of the piston pin. The most common method of attaching the semi-floating wrist pins to the rod is by press-fitting. The little end of the connecting rod is heated, which expands the metal and the diameter of the hole.If you're using high-level forced induction, nitrous oxide injection, high rpm or heavy sustained loading on your performance engine, upgraded semi-floating wrist pins represent the insurance deal of the century. Wall thickness is a critical factor based on application.
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