This is the Honda NR 750
An oval piston V4. The logic was it had eight valves per cylinder and behaved like a small V8 where the rules only allowed for four cylinders.
3
0
![](/uploads/avatars/08/91/100/33715658eeca1390891.jpg?r=9660)
![](/template/img/ok.png)
An oval piston V4. The logic was it had eight valves per cylinder and behaved like a small V8 where the rules only allowed for four cylinders.