Following its successful adoption on the 1972 works twins, water cooling first appeared on Yamaha’s over-the-counter racers with the introduction of the TZ range in 1973. Apart from the water cooling, the engine was little changed from that of the preceding air-cooled TD/TR racers, and with the fairing on it was hard to spot the difference. There were minor changes made to porting and exhaust system, which raised maximum power (to 65bhp in the 350’s case), while the more stable engine temperature that water-cooling afforded meant that reliability was much improved. Ridden by Jarno Saarinen, the works TZ350 scored a sensational debut victory in the 1973 Daytona 200. Sadly, Saarinen lost his life at Monza later that year in a crash that also claimed that of Renzo Pasolini. Promoted to number one rider as a result, Tepi Lansivuori narrowly failed to depose reigning 350 and 500cc World Champions MV Agusta. However, Dieter Braun’s 250cc World Championship - started on a TD3 and completed with a TZ250 engine installed - demonstrated the customer bike’s potential in the right hands. The customer TZs changed little until the arrival for 1976 of the TZ250/350C, which was equipped with Yamaha’s mono-shock rear suspension that had been developed in the works moto-crossers. With the new rear suspension came a longer-travel front fork on which was mounted a single disc brake, while changes to the TZ250C’s porting and exhaust opened the door to further advances. Concentrating on its revived campaign in the 500cc class, Yamaha made few changes to the succeeding ‘D’ and ‘E’ models. A major redesign saw the ‘F’ models emerge in 1979 with a new frame and a braced, aluminium-alloy swinging arm, while the 350’s engine had undergone extensive revision and produced 72bhp, eight horsepower more than before. With the FIM deciding to drop the 350 class from Grand Prix racing, the TZ350 changed only in detail before the last, ‘H’ version was made in 1981. This last-of-the-line TZ350 was imported into Germany by Mitsui GmbH and raced by the Austrian rider, Sackadad Wolfgang. Acquired for the Museum in 1989 and maintained in good order, the machine is offered with a quantity of valuable spares to include crankcases, cylinder heads, pistons and piston rings, transmission and ignition components, radiator, hoses, cables, brake discs, chains, etc.
Following its successful adoption on the 1972 works twins, water cooling first appeared on Yamaha’s over-the-counter racers with the introduction of the TZ range in 1973. Apart from the water cooling, the engine was little changed from that of the preceding air-cooled TD/TR racers, and with the fairing on it was hard to spot the difference. There were minor changes made to porting and exhaust system, which raised maximum power (to 65bhp in the 350’s case), while the more stable engine temperature that water-cooling afforded meant that reliability was much improved. Ridden by Jarno Saarinen, the works TZ350 scored a sensational debut victory in the 1973 Daytona 200. Sadly, Saarinen lost his life at Monza later that year in a crash that also claimed that of Renzo Pasolini. Promoted to number one rider as a result, Tepi Lansivuori narrowly failed to depose reigning 350 and 500cc World Champions MV Agusta. However, Dieter Braun’s 250cc World Championship - started on a TD3 and completed with a TZ250 engine installed - demonstrated the customer bike’s potential in the right hands. The customer TZs changed little until the arrival for 1976 of the TZ250/350C, which was equipped with Yamaha’s mono-shock rear suspension that had been developed in the works moto-crossers. With the new rear suspension came a longer-travel front fork on which was mounted a single disc brake, while changes to the TZ250C’s porting and exhaust opened the door to further advances. Concentrating on its revived campaign in the 500cc class, Yamaha made few changes to the succeeding ‘D’ and ‘E’ models. A major redesign saw the ‘F’ models emerge in 1979 with a new frame and a braced, aluminium-alloy swinging arm, while the 350’s engine had undergone extensive revision and produced 72bhp, eight horsepower more than before. With the FIM deciding to drop the 350 class from Grand Prix racing, the TZ350 changed only in detail before the last, ‘H’ version was made in 1981. This last-of-the-line TZ350 was imported into Germany by Mitsui GmbH and raced by the Austrian rider, Sackadad Wolfgang. Acquired for the Museum in 1989 and maintained in good order, the machine is offered with a quantity of valuable spares to include crankcases, cylinder heads, pistons and piston rings, transmission and ignition components, radiator, hoses, cables, brake discs, chains, etc.
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