Wonderful Spitfire in original Laurel Green. The car has the upgraded 1.5-liter engine making 63 brake horse power from the factory and a 4-speed manual transmission with overdrive. The car is inspected and serviced and is ready to be enjoyed for many years.
Commission Number: FH4199L
Odometer: 00610 km
Engine: 1.492 cc, I4, 63 bhp
Engine Number: YC66233HE
Carburetor: 2 x SU
Transmission: 4-Speed manual with overdrive
Color code: 55 = Laurel Green (model year70-72)
Trim code: K01
YC = 1492 cc = 1500 Rear Drive/Dolomite
HE= High compression engine
History of the Spitfire Mark IV (1970–74):
The Mark IV brought the most comprehensive changes to the Spitfire. It featured a completely re-designed cut-off rear end, giving a strong family resemblance to the Triumph Stag and Triumph 2000 models, both of which were also Michelotti-designed. The front end was also cleaned up, with a new bonnet pressing losing the weld lines on top of the wings from the older models, and the doors were given recessed handles and squared-off glass in the top rear corner. The interior was much improved: a proper full-width dashboard was provided, putting the instruments ahead of the driver rather than over the centre console. This was initially black plastic however was replaced with wood in 1973.
The 75 horsepower engine was now rated at 63 horsepower due to the German DIN system; the actual output was the same for the early Mark IV. However, it was slightly slower than the previous Mark III due to carrying more weight, and employing a taller 3.89:1 final drive as opposed to the earlier 4.11:1.
By far the most significant change to the Mark IV was to the rear suspension, which was de-cambered and redesigned to incorporate what Triumph called a "swing spring". With this system one leaf was eliminated from the stack and only the bottom leaf was attached rigidly to the differential. The remaining leafs were mounted such that they were able to pivot freely. With this change Triumph was able to eliminate the worst characteristics of the original swing-axle design. This was a different approach than that taken with the Triumph GT6 Mk II (GT6+) and Triumph Vitesse Mark 2, both of which received new lower wishbones and Rotoflex half-shaft couplings. In either case the result on all these cars was safe and progressive handling even at the limit.
The Mark IV went on sale in the UK at the end of 1970 with a base price of £735.