I had one of these,.....was `n lekker bike.
"The FZ750 is notable for several reasons, perhaps the most radical being the 5-valve cylinder head with a radial arrangement. This became something of a Yamaha trademark, and although disputed in recent years, it was argued that for a given lift, the 3 inlet valves flowed more effectively than conventional twin inlet valves. What was indisputable was that their light weight allowed for faster opening speeds, and softer valve springs, all contributing to theoretical increases in engine speed and thus power outputs. Whatever the scientific merits, the bikes were famous for their linear power delivery, and in 1985 it was still considered impressive to achieve 150mph from a 750 road machine. "