Tasman Series
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The Tasman Series was a motor racing series held mainly in the 1960s, in Australia and New Zealand, named after the Tasman Sea between the two countries. It used cars similar to Formula One, yet according to the engine rules that were in effect until 1960. The Tasman series was held during the F1 off season, roughly from November to March, due to the winter in the Northern hemisphere.
Thus, engines with 2500cm³ that were obsolete for the current F1 world championship since 1961 could still be used, and from 1964 to 1965, the Tasman Series was considered faster than the actual F1 with its engines limited to 1500cm³. After F1 upgraded to 3000cm³ in 1966, the Tasman series went on for some more years. Usually, the chassis of the previous F1 season were fitted with "Tasman" engines, and entered "down under".
Mainly the drivers from that area and era, like Jack Brabham, Bruce McLaren, Chris Amon, Denny Hulme took part in their home events, but also international F1-Stars like Jim Clark, Graham Hill, Phil Hill, Jochen Rindt, Pedro Rodriguez and Jackie Stewart travelled the long way.