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Harley camshaft JDH to Harley 8 valves

Old JDH camshaft became new 8 valves camshaft

  

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Harley 8 valves 1916

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Harley 8 valves

a photo of a rare 8-valve box with two speeds gearbox.
Photo sent by Dino Rossetto to website http://www.moto-histo.com

Is somebody know more about this configuration, please send a message.

HD4soupapes2

Harley 8 valves, ex Dixon ex Cameron ex etc…

The beauty of racing machines. A constant search for speed and efficiency. The same bike at various stages of development.
If anyone has any other photos of this bike I’m interested.

8 valves top end

For sale on ebay a few years ago