41. The 3010 cc DB engine was very robust and its crankshaft was supported by seven main bearings . 42. They have cast iron blocks and aluminium alloy heads, with a crankshaft supported by five main bearings . 43. In many cases this coolant rapidly contaminates the motor oil in the sump, causing main bearing failure. 44. Also these engines employed 7 main bearings . 45. Nine main bearings provided a crankshaft main bearing support between each 135 degree opposing pair of cylinders. 46. The new block had more webbing and a stud girdle for added rigidity of the crankshaft main bearings . 47. The crankshaft featured four main bearings . 48. An accessories section was powered off a shaft at the front of the engine at the main bearing . 49. The outer main bearings were rollers. 50. The engine has five main bearings .
