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MGB 18GB Engine Oil Pump Cover & Oil Filter Head Machining Diagrams (Figs 7-8)

Dimensioned engineering drawings of oil pump cover and oil filter head machining with section views
Dimensioned engineering drawings of oil pump cover and oil filter head machining with section viewsOriginal file
Dimensioned engineering drawings of oil pump cover and oil filter head machining with section views

Reference · 1962-1974 BAll 2 blueprints

MGB 18GB Engine Oil Pump Cover & Oil Filter Head Machining Diagrams (Figs 7-8) MGB Oil Sump Baffle Plate Blueprint (Fig. 6), Oil Pump Tuning & Torque Specs 2blueprints1962-1974 MG B More reference MGB Tourer & GT 1962-1972 Workshop Manual Table of Contents - Wiring & TuningManual page MGB Twin SU Carburetter Tuning - Initial Settings & Tuning Conditions (Page 428)Service procedure MGB Tuning Data to 1971 & 1971 - Ignition Timing, Distributor, SU Carb SpecsSpec plate MGB 18V Engine Tuning Data (ECE 15 European Spec) - Timing, Plugs, SU HIF4Torque spec MGB SU Carburetter Components Exploded Parts Diagram - Workshop Manual p132Exploded parts MGB Engine Lubrication System Diagram - Oil Flow, Filter & Rocker Gear DetailSchematic MGB Wiring Diagram with Key & Cable Colour Code - Workshop Manual Page 13Wiring diagram

Engineering blueprint detailing oil pump cover and oil filter head machining with dimensions, radii and section views.

Part of 1962-1974 MG B Blueprints

AI caption · Photo 86 of 101

This page, titled "Other Special Items" (page 458), presents two dimensioned engineering drawings related to engine oiling modifications. Fig. 7 (drawing reference A.9517) is a diagram showing a portion of the oil pump cover to be removed. It shows the cover with a 2 5/16" reference dimension, instructions to bore a hole right through at 19/32" diameter (suction side), and a shaded area of the cover to be machined away. A detail view with Section X-X gives machining dimensions including 1/16" R, 3/16", 1/16" RAD., 1/4", 11/16" RAD., 13/32" RAD., 9/16", 1/8", and 7/64". A note states that part of this machining is already incorporated on 18GB engines. Fig. 8 (drawing reference A.9518) is a diagram showing a portion of the oil filter head to be removed, with a shaded portion identified, 7/8" + 7/8" width dimensions, and a scrap section X-X showing the removal to be 1/16" deep maximum with 1/16" radii. The page gives a machinist the exact geometry needed to modify the oil pump cover and oil filter head, likely as part of an engine tuning/preparation procedure.

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Frequently asked questions

What modification does Fig. 7 show for the oil pump cover?
It shows a shaded portion of the oil pump cover to be removed and instructs to bore a hole right through at 19/32" diameter on the suction side, with detailed machining radii (e.g., 1/16" RAD., 11/16" RAD., 13/32" RAD.) shown in Section X-X.
Is this oil pump cover machining needed on all engines?
The note under Fig. 7 states that part of this machining is already incorporated on 18GB engines.
How deep should the oil filter head material removal be in Fig. 8?
The scrap section X-X shows the removal is 1/16" deep maximum, with 1/16" radii at the edges.
What are the drawing reference numbers on this page?
Fig. 7 is referenced A.9517 and Fig. 8 is referenced A.9518; the page number is 458.
What width dimensions are given for the oil filter head modification?
The shaded portion spans 7/8" plus 7/8" (measured either side of the centerline) in Fig. 8.

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