Complex sentence: It used a Keihin Seiki Vacuum carburettor, as opposed to the earlier engines, which were equipped with a slide valve type.The Home Market (Japan) version was built using a 180 degree crankshaft, as opposed to the 360 degree layout in the U.S.models.
Split into simpler sentences: It used a Keihin Seiki vacuum carburettor, as opposed to the earlier engines, which were equipped with a slide valve type. The home market (Japan) version was built using a 180 degree crankshaft, as opposed to the 360 degree layout in the U.S.models.