31. It used a cast-iron block and cylinder head, and a steel crankshaft with 3 main bearings . 32. Around 1980, in line with civilian models, the engine had 5 main bearings instead of 3. 33. The crankshaft was fully counterbalanced, mounted in nine main bearings , and fitted with a vibration damper. 34. A V4 engine typically has three main bearings . 35. Later BL produced the five main bearing " O " series engine which was extremely strong. 36. The crankshaft is supported by seven main bearings . 37. All main bearing were lubricated by a force feed lubricator, located in front of the dashboard. 38. The forged steel crankshaft is fully balanced with eight counterweights and supported by five main bearings . 39. Nine main bearings provided a crankshaft main bearing support between each 135 degree opposing pair of cylinders. 40. $200 for piston rings and main bearings .
