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While many felt the Knucklehead's life was cut unduly short, the Panhead that replaced it for 1948 offered some valuable improvements. Most notable of these was a switch to hydraulic valve lifters, which automatically took up any slack in the valvetrain and did not need constant adjustment. As a result, Panheads produce less engine noise and required less maintenance. They also ran a little cooler, because the heads were now made of aluminum. |
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Panhead: 1948-1965
With improvements to the engine design, like hydraulic valve lifters that supplied oil to the rocker arms, the Panhead hit the market in 1948. Named for the pan-like valve covers replacing the knuckle covers. |
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