Supercharger arrangements for engine assemblies

7) An engine assembly including first and second superchargers mounted thereto on individual first and second supercharger mounting members respectively, each said mounting member having integrated therewith a lubrication feed passage and a lubrication return passage, wherein said superchargers are separable from their associated said mounting members and the routing of said feed and return passages is substantially inverted between said mounting members in the region of respective supercharger mounting faces thereof in such a manner that said superchargers are mountable interchangeably between said first and second mounting members with substantially mirror image orientations and regardless of which said supercharger is mounted to which said mounting member.

9) A set of supercharger mounting members for use in a supercharger arrangement of an engine assembly, said mounting members comprising individual components and each individual said supercharger mounting member defining therethrough a supercharger lubrication feed passage and a supercharger lubrication return passage and end portions of said feed and return passages being substantially inverted between a pair of mounting members in the region of supercharger mounting faces thereof, whereby said mounting members are mountable separately to substantially opposing sides of a said engine assembly so that substantially identical superchargers are mountable one each to said mounting faces and are thereby disposed in substantially mirror image orientations about said engine assembly.

10) A method of mounting a plurality of superchargers on an engine assembly, the method including;

• a) providing on substantially opposing sides of said engine assembly individual first and second supercharger mountings, each of which mountings has defined therethrough a lubrication feed passage and a lubrication return passage whose routing is substantially inverted between said mounting members in the region of respective supercharger mounting faces thereof;
• and
• b) connecting first and second substantially identical superchargers to said first and second mountings respectively in substantially mirror image orientations about said engine assembly.