Complex sentence: The Hiro Type 90 was a twelve cylinder W-type engine with a bore of 135 mm. and a stroke of 160 mm. for a capacity of 27.5 litres.
Split into simpler sentences: The Hiro Type 90 was a twelve cylinder W-engine. This type had a bore of 135 mm. and a stroke of mm. for a capacity of 27.5 litres.