The Honda NR (New Racing) was a V-four motorcycle series started by Honda in 1979 with the 500cc NR500 Grand Prix racer which used oval pistons. [1] This was followed during the …

With its oval piston engine incorporating eight valves and two connecting rods per cylinder, plus an aluminum semi-monococque frame complete with an inverted front fork, the machine …

Nov 11, 2021 · Read about the Honda NR750, an oval piston 8-valve V4 powered motorcycle and why it was designed and built here.

Jul 8, 2022 · Undeterred by the NR500’s failure Honda turned their attention to a 750cc oval-piston endurance racer. Entered in the 1987 Le Mans 24-hour race Australia’s own Malcolm …

Aug 1, 1987 · Both of Honda’s NR500s, complex and exotic four-strokes designed around unique oval pistons, are suffering enough teething problems to keep their mechanics busy for the next …

Jan 9, 2020 · In 1979 Honda produced the world’s first engine which featured oval pistons with the introduction of the NR500 Grand Prix racer. The oval pistons later found their way in the …

Mar 12, 2023 · Honda’s ultimately ill-fated journey down the oval piston rabbit hole began with a search to solve a 1980s regulatory problem more than a performance issue: Officials …

Aug 1, 1987 · 1 The bike you see here is the NR750, a racing Honda with the most radical engine in all of motorcycling: a 750cc, oval-piston, eight-valve-per-cylinder, four-stroke V-Four. 2 …

May 23, 2013 · 1992 Honda NR750: One of the most audacious motorcycles ever, the Honda NR750 used oval pistons with dual connecting rods.

Honda's answer was the adoption of an oval-piston design. With eight valves lined up atop the pistons, each supported by two connecting rods, the team's new 4-cylinder engine looked like …