Abstract: The invention relates to an oil nozzle 14 mounted on an engine block 10 to direct oil towards the underside of a reciprocating piston. The oil nozzle 14 consists of an annular mounting collar 16 having a cylindrical outer surface and a tube 38 projecting generally radially from the mounting collar 16. The engine block is formed with a drilled and tapped screw threaded bore 30 that is drilled into the surface of the engine block to intersect an oil gallery 32 in the engine block 10, and with a cylindrical recess 44 that is machined in the surface of the cylinder block 10 surrounding the mouth of the bore 30 to receive and locate the mounting collar 16 of the nozzle 14. A capscrew 28 is inserted through the collar 16 into the threaded bore 30 to retain the collar within the recess, the capscrew allowing oil to flow from the oil gallery in the block into the mounting collar of the oil nozzle.

Abstract: A method of manufacturing a camshaft comprises the first step of casting a blank defining a central shaft, concentric journal bearings and eccentric cam lobes, the cam nose region between the journal bearing at the driven end of the camshaft and the adjacent cam lobe being cast in the same non-circular shape as the cam lobe but with smaller dimensions. The cam nose and the cam surface of the first cam lobe are then ground. Preferably, the cam lobe surface and the cam nose are ground at the same time as one another by means of a shaped grinding wheel having a cylindrical portion for grinding the cam surface and a narrower contoured portion of larger diameter at one end for grinding the cam nose.