The final version of the GT6 was produced between 1970 and 1973 with 13,042 units built. It had a mid-life upgrade with a conversion to using the Spitfire MkIV suspension being introduced. In the U.S. the familiar problem of less power again hurt performance. The compression ratio was reduced from 9.5:1 of the Mk 1, to 9.25:1 in the Mk 2 and 8:1 in the Mk 3 with a result that only 90BHP was produced in early models (1971) and an even lower result of 79BHP (1972-73). Home market cars continued to enjoy 104BHP.
This model was released in Australia in 1972 to counter the poor reputation of the PI model. Bascially, a down-spec MK2 PI, it had slightly different trim design, no tacho and a 2-spoke steering wheel. The engine used a GT6 spec camshaft and a pair of 1.5" SU or Stromberg carburettors, depening on the year. The last 2500 TC was sold in Australia in 1978, and it varied very little from the 1972 version.
This model was released in Australia in 1970 , along with the Mk2 PI, as the replacement for the Mk1 model. The 2000 models shared an identical body with the PI model , but featured chrome bezels on the instruments, and a 3-person rear seat. Most of them were manuals. The engine used a GT6 spec camshaft and a pair of 1.5" SU or Stromberg carburettors, depending on the year.
This rare model was released in Australia in mid 1968, as the up-market version of the highly sucessful 2000 model. The PI models shared an identical Australian-made body with the 2000 model of the same year , but featured the 2500 engine like in the TR5 (but with softer camshaft), rostyle wheel trims, radial tyres, larger exhaust pipes, stiffer springs and shockies, 140mph speedo , deeply sculpured seats. Discreet "injection" badges were added to the chrome boonet mould and on the rear panel, whilst the C pillars got small round "PI" (petrol injection) badges.
Unfortunately, overdrive was not offered as an option here, and many of them used the BW35 auto transmission as they were sold as "up-market" or luxury cars.
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On most cards there are several fuses which will blow and prevent an electrical fire in the event of a fault. This is not the case with the Triumph Dolomite range as they only have two fuses. All triumphs and most other English cars share the same colour coded wiring systems of which the more important of these is explained below.