BL R-series engine fitted to the Maestro with the carburettor facing the front of the car, which also led to a reputation for carburettor icing in cold weather. The endemic problem of crankshaft failure was later attributed to flexing of the crankcase – because the E series relied upon the heavy sump/transmission unit to give additional strength to the cylinder block casting, this caused problems when a plain sump was bolted in its place. The R series was superseded in 1984 by the S series. BL R-series engine The R series is a line of petrol engines introduced by British Leyland in 1983
BL Lacertae object the class of object in 1972 and added four objects. By 1976 there were 30 known objects. In 2017, a very high energy neutrino was detected by the IceCube project apparently coming from BL Lac object TXS 0506+056. BL Lacertae object A BL Lacertae object or BL Lac object is a type of active galactic nucleus (AGN) or a galaxy with such an AGN, named after its prototype, BL Lacertae. In contrast to other types of active galactic nuclei, BL Lacs are characterized by rapid and large-amplitude flux variability and significant optical polarization. Because of these properties, the prototype of