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The Biggest Problem With Harley-Davidson's Early Big Twin Engines
Over time, V-twin engine varieties included some of the best Harley-Davidson engines ever made, such as the Flathead ... Engine oil consumption would be problematic in early Panhead V-twins ...
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10 Legendary Harley-Davidson Engines That Refuse To Die
This is a curious straddling of technologies by Harley-Davidson, especially when you consider the Flathead ... problems. Oil leaking from the top end is a common occurrence on early Panheads ...