Discovery II
ENGINE - V8
DESCRIPTION AND OPERATION
12-2-7
Oil sump
The oil sump is bolted to the bottom of the cylinder block and the timing cover and is sealed to both components with
a one piece gasket. A removable baffle to prevent oil surge is fitted in the sump. The oil pick-up pipe and strainer
assembly is positioned within the sump and is attached at the pick-up end to a stud screwed into number four main
bearing cap and at the delivery end to the oil pump. The oil drain plug is located in the bottom of the sump and is
sealed with a washer.
Pistons and connecting rods
Each of the aluminium alloy pistons has two compression rings and an oil control ring. The pistons are secured to the
connecting rods by semi-floating gudgeon pins. Each gudgeon pin is offset by 0.5 mm (0.02 in). The top of each piston
is recessed, the depth of recess determining the compression ratio of the engine. Plain, big-end bearing shells are
fitted to each connecting rod and cap.
