Engines
The original Plus 8s engines were based on the Rover V8 which had been bought by Rover. Morgan was the first of a succession of sports car makers- including the likes of TVR and Marcos- to use the engine, which Rover had only just made available in the P5B saloon.
The Plus 8 development car used a Rover V8 block and the Plus 8 was launched in 1968 using Rover's production engine, itself a re-engineered version of the Buick 215 block (renamed the 3.5 L by Rover) with a compression of 10.5:1 fueled by two SU HS6 carburettors. By 1973, the Rover 3500 saloon was available with a manual 4 speed gearbox and this engine/gearbox configuration was adopted by Morgan although the compression dropped to 9.25:1 with a resulting loss of power. With the adoption of an improved version of the block developed for the Rover SD1 in 1977, compression was increased to 9.35:1 and power increased. After 1981 the engine was fueled by two Stromberg carburettors, .
At the end of 1983, the company offered a EFI version using a Bosch L-Jetronic based system. With the added power (204 bhp (152 kW; 207 PS)) and low weight, the Plus 8 was, according to the magazine road tests of the day, able to best a Porsche up to 90 mph (140 km/h). In 1990, a 3.9 L version of the block was added using the Lucas 14CUX fuel injection system.
In 1996, a 4.6 L version found its way into the car as an option, still using the 14CUX system. From 2000, all Morgan Plus 8s were fueled by the GEMS system used on the Land Rover Discovery II.
On the 2012 Geneva Motor Show, Morgan introduced a new edition of the Plus 8 roadster, powered by a 4.7L BMW V8-Engine.
Read more about this topic: Morgan Plus 8
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