BMC B-series engine

B-series engine
B-series engine
Overview
Manufacturer	BMC
Designer	Leonard Lord, John Rix, Eric Bareham
Production	1954–1986
Layout
Configuration	Inline-4 and Inline-6
Displacement	Inline-fours:; 1.2 L (1,199.6 cc); 1.5 L (1,490 cc); 1.6 L (1,588 cc); 1.6 L (1,623 cc); 1.8 L (1,762 cc); 1.8 L (1,798 cc); Inline-six:; 2.4 L (2,433 cc);
Cylinder bore	65.5 mm (2.6 in); 73 mm (2.9 in); 75.4 mm (3.0 in); 76.2 mm (3.0 in); 80.2 mm (3.2 in);
Piston stroke	89 mm (3.5 in)
Cylinder block material	Cast iron
Cylinder head material	Cast iron; Aluminum alloy (Twin-Cam);
Valvetrain	OHV, Twin-Cam
Compression ratio	8.3:1-9.9:1
Combustion
Fuel system	Single or twin carburettors
Fuel type	Petrol & Diesel versions
Cooling system	Water-cooled
Output
Power output	39–108 bhp (29–81 kW)
Torque output	64 lb⋅ft (87 N⋅m)
Chronology
Predecessor	BMC A-Series engine
Successor	BMC E-Series; BL O-Series;

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The BMC B series is a line of straight-4 & straight-6 internal combustion engine mostly used in motor cars, created by British automotive manufacturer Austin Motor Company.