Complex sentence: The 3-bearing 1798 cc B-Series engine produced 95 hp (71 kW) at 5,400 rpm--upgraded in October 1964 to a five-bearing crankshaft.
Split into simpler sentences: The 3-bearing 1798 cc B-Series engine produced 95 hp (71 kW) at 5,400 rpm. The engine was upgraded in October 1964 to a five-bearing crankshaft.