Complex sentence: The new car was given a small (1271cc) six-cylinder engine with a single overhead camshaft following the Wolseley custom begun by their 2-litre 16/45 6-cylinder engine announced in September 1926 before the change of ownership.
Split into simpler sentences: The new car was given a small (1271cc) six-cylinder engine with a single overhead camshaft. The overhead camshaft followed the Wolseley custom begun by their 2-litre 16/45 6-cylinder engine announced in September 1926--just before the change of ownership.