In 2016, Honda released a turbocharged three-cylinder small car called S660 in Japan. This engine would be considered a moderate engine for a motorcycle. However, engineers from Honda thought they could squeeze some more power out of it.
Here is the Honda S-Dream Streamliner, which is very much a sharp looking pencil powered by the S660's 660cc engine. The team have carefully re-investigated every part of the car's engine and renewed them which includes cylinder block, pistons, crankshaft, and valves.
Adding to the engine was the replacement of the lower block with a steel unit and reinforced connecting rods to give the unit rigidity to withstand the record run. The project has been close the heart of sixteen R&D people at Honda Japan and has been ongoing pretty much from the time the S660 was launched in Japan.
Japan's motorcycle champion Hikaru Miyagi test-piloted the needle-shaped race car and very much lived to tell the story.