A group of former Harley Davidson development engineers, who call themselves the Gray Eagles, are currently working on converting a 1988 Harley Davidson FXRS V-twin engine into a turbo diesel with electronic fuel injection.
The group currently don't have any plans to produce the motorcycle or engine as the motorcycle is as it's currently only a concept demonstrator as opposed to a pre-production prototype.
Project leader, Nick Hirschm said: We were trying to make a lightweight high powered advance diesel engine to demonstrate to the US military.
"We wanted to show them the capabilities of a diesel engine."
Watch the video to see the motorcycle in action and read the full article in MCN, out Wednesday 12th March 2008.