MGB Engine Lubrication System Diagram - Oil Flow, Filter & Rocker Gear Detail

This page, labeled Section A.2 from an MGB workshop manual (Issue 8, publication 80619, page 74), presents 'The Engine Lubrication System' as an annotated cutaway schematic of the MGB engine. The main illustration shows the complete oil circulation path through the engine block, with 22 numbered callouts identified in a legend: restrictor, oil squirt to cylinder walls, rocker feed hole, oil filler, oil return to sump, external pipe, low pressure gallery, relief valve, feed to gears, main feed, oil pump, main high pressure gallery, feed to chain tensioner, oil bleed to chain, full flow filter (see detail), oil bleed for valve stem tip, pressure feed to ball tip, inlet, oil gallery, to main bearing, release valve, and the intermittent feed to the rocker gear. Three supplementary detail views clarify specific areas: rocker gear lubrication (items 16–17), the full flow oil filter in cross-section with flow arrows (items 18–21), and big end lubrication (items 1–2). The drawing carries reference number A0007B. A reader can learn how oil flows from the pump through galleries, filter, bearings, timing chain tensioner, and rocker gear in the MGB engine.