BL O-series engine

BL O-series
BL O-series
Overview
Manufacturer	British Leyland Motor Corporation; Austin Rover Group
Also called	Rover M8
Production	1978–1993
Layout
Configuration	Straight-4
Cylinder block material	cast iron
Cylinder head material	aluminium
Valvetrain	SOHC
Combustion
Fuel system	Carburettor or Fuel Injection
Fuel type	petrol
Cooling system	water-cooled
Chronology
Predecessor	BMC B-series engine; BMC E-series engine;
Successor	Rover M-series engine; Rover T-series engine; Rover K-series engine; Rover L-series engine (diesel);

The BL O-series engine is a straight-4 automobile engine family that was produced by the Austin-Morris division of British Leyland (BL) as a development of the BMC B-series engine family. (See also another B-series successor, the BMC E-series engine.)

Introduced by BL in 1978 in the rear wheel drive Series 3 Morris Marina and the smaller engined versions of the front-wheel-drive Princess, it was intended to replace the 1.8 L B-series unit. The main advance over the B series was that the new unit was of belt driven overhead camshaft configuration, with an aluminium cylinder head.

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