Leyland PE166 engine
The Leyland PE166 is a single overhead camshaft Straight-six engine developed by the Rover-Triumph division of British Leyland, and was exclusively used in the Rover SD1 series of vehicles between 1977 and 1986.
Technical detail
The engine was loosely based on the older Triumph I6, and was initially intended to share some internal components with that and the Dolomite Sprint engines. However, during development not a single component remained unchanged, the last link being severed when the conrod big-end was increased in diameter over the Dolomite Sprint equivalent. Both the capacity variants use an bore, with a or stroke giving capacity respectively. The 2350 cc engine produces a maximum power of at 5000 rpm and a maximum torque of at 3500 rpm. The 2.6 L engine, meanwhile, produces a maximum power of at 5000 rpm and a maximum torque of at 3750 rpm.
Background
Following Leyland Motors' acquisition of both Standard [Motor Company|Standard-Triumph] and the Rover Company in 1960 and 1967, a unified model policy was developed, with Rover and Triumph reorganized into the Specialist Division. Proposals were developed for replacing both the Triumph 2000 and the Rover P6 with a single product, codenamed SD1.