Yamaha TZ collection  2811

Yamaha TZ collection 2811

8950 Euros each

No 7  Yamaha ca 1980 TZ 350 B 383  347 cc  two stroke twin    production racer  frame # 383 997260  engine # DS7-994149

The TZ story begins for real in 1971 when air-cooled factory twins bikes first appeared with four lugs already mounted on the front down tubes, upon which the radiator could be mounted as and when required.
By the end of that year the first prototype water-cooled top end was in existence ready for the start of the 1972 season.
These were used to great effect by several favoured riders that season, but none more effectively than Jarno Saarinen, who clinched the 250cc championship that year, and finished a close second in the 350cc class behind Agostini and the MV Agusta.

By the end of 1972 the Yamaha factory was ready to start production of the water-cooled production race machine, the TZ350 A.
Based loosely upon the R5 roadster, no doubt to make it eligible for US competition, there was some notable differences, the primary gears provided the drive for the water pump, and the barrels were a one-piece design enabling the transfer ports to be larger than with separate cylinder castings.

Power output for the over-the-counter machine was a unprecedented 65bhp at 9,500 revs and it cost a very reasonable £1200.00.
For this price you also got a comprehensive spares kit enabling a whole seasons racing without further expense, providing you stopped on it that is.
This package, with no viable alternative, was enough to become the favourite mount for a multitude of riders from club level all the way though to GP’s.
Once the power band was mastered the bikes were very easy to ride, the 350 being the more flexible than the 250.
Saarinen gave the new water-cooled machine the perfect launch by taking one to the USA, beating the established Superbikes of the time to win the prestigious Daytona 200.

This TZ has been raced in The Netherlands and  has been part of a static  collection for many years. She will need a full checkup before being recommissioned

 

No 2  Yamaha ca 1981    TZ 250 H 5F7  250 cc two stroke twin   production racer   frame # 5F7 010162  engine # 5F7 00019

In 1981 Yamaha was ready to introduce an all new TZ250.
Known as the TZ250H, this design incorporated the powervalves found on the 500, providing more of a sensible balance between power and reliability.
The new engine ran backwards from the previous design, helping even further in reliability.
The single casting crankcase was replaced with left and right case halves and power was then tapped from the center of the engine.
This design yielded a lower piston speed resulting in less bottom end problems.
The powervalves employed a mechanical-governor design which kept them closed up to 8,750 rpm, opening fully by 11,000 rpm.
This allowed a free flow of all exhaust gases.
Carburetion was updated with new Mikuni ZC units. The new TZ frame was 6.5 pounds lighter, with the engine positioned slightly forward of previous designs.
A new rear shock and reduced rake angle added to the TZ’s improved ride. Wire wheels were offered for the first time since the mid 1970’s.
This new TZ was expensive but well worth it for GP Racers.
By the end of the 1981 season, the new machine proved to be very comparable the championship winning KR250 Kawasaki. Quite a leap compared to what had been.

This TZ has been raced in The Netherlands and  has been part of a static  collection for many years. She will need a full checkup before being recommissioned.

 

Yamaha ca 1984  TZ 250 49V   250 cc two stroke twin production racer  frame & engine  # 49V-000111 

1984 saw the release of the TZ250L. This design moved the engine further even still, placing more weight on the front wheel. To prevent tank slapping, the swingarm and wheelbase was lengthened 40mm.
Electrically driven powervalves and rejetted carbs improved performance considerably, putting out over 60HP.
This TZ has been raced in The Netherlands and  has been part of a static  collection for many years.
She will need a full checkup before being recommissioned.

 

Yamaha ca 1985 TZ 250/85 250 two stroke twin production racer frame# 59W000129

Last of the steel framed TZ’s and the first with reed valves – as such, this model represents an interesting turning point in the history of the TZ250 grand prix two stroke range.
Yamaha only made a few 1985 models, as people were hanging on for the much anticipated aluminium framed bike of 1986, so this is a rare bike.
The original import document and invoice show that it was imported in The Netherlands in January 1985 and cost a bit more than 35,000 guilders, quite a fortune indeed: you could get 4 brandnew Yamaha XV 750 SE custom bikes fort that price.
The TZ was bought by famous Dutch racer Rob Bron, who at the time had finished his active racing career and had set up shop as a tuning and racing specialist.
Rob had had his best year in 1971 when he finished in third place in the 500cc world championship behind Giacomo Agostini and Keith Turner.
That year at the race in Assen he finished second in the 500 cc class behind Agostini.
This TZ has been raced in The Netherlands and has been part of a static collection for many years. She will need a full checkup before being recommissioned.