Background
The late 1960’s, and the design for project XJ27 was initially started by Malcom Sayer. The design was never finished and was taken over in 1970 by the in-house Jaguar design team, headed by Doug Thorpe. The 5.3 litre V12 finally made its debut on the 10th September 1975, and was named the Jaguar XJ-S, with a top speed of 143mph and a 0-60 mph in 7.6 seconds.
Development of the V12 engine saw a new model released in 1981, the XJ-S HE. Whilst not making any more power, the engine dramatically improved the fuel economy, hence the HE (High-Efficiency). Two years later a targa convertible was produced, firstly with the 3.6 six cylinder engine until 1985, when the V12 was also an option.
The XJ-SC Targa model took a great deal of engineering, as simply deleting the roof would cause the Jaguar’s monocoque to sag in the middle. The solution was to remove some of the roof but leave the strengthening framework in place, and then make panels which would clip in place. This made the Jaguar as close to a full convertible as possible, until 1988 when the full convertible made it to the production line.







