Go to the Welcome Page

Go to the News Page

Go to Picture of the Month

Search the MG Y Type site

Links to other useful sites and stuff

Events for Y Types

A concise history of the MG Y Type

Interesting and Different MG Ys

End of Menu Items

floorjack

Technical Data
for the MG Y Series

traff

In this suite of pages we will bring you General Data sheets for the MG YA, YT and YB, and wiring diagrams for original "standard" wiring layouts.  Please note that these are based on original factory manual information only: they may not necessarily reflect your car as, over the years, your car may have been heavily modified by previous owners.  Furthermore, your attention is drawn to our DISCLAIMER.

For those of you who are not fully conversant with the differences between the MG YA and YB saloon, Neil Cairns has authored a page to highlight the differences too. All files are in PDF Format for which you will need Adobe Acrobat Reader.  If you have not got this installed on your PC you can download it free here  getacro.

Differences between the MG YA and the MG YB

General Data Summaries

Generators and Control Boxes

Problem Solving Diagnostics

Rebuilding Starter motors

Size Matters

Spark Plug Diagnosis

SU Carburettors

SU Fuel Pump

Wiring Diagrams

Lucas Overseas Technical Correspondence Course

Salesman's Reference Book - MG YB section only
1952 edition and February 1953

Service Parts Price List

Modern Petrol and Classic Cars - the Manchester XPAG Tests

 

Size Matters

by Dave DuBois, Don Harmer and Tony Slattery

Fasteners, Threads, Torque and Wrench were all originally written for the T Register, they are reproduced here because of the commonality of parts shared between the Y series and the T series.  Nuts and Bolts is specifically written for Y Types.

Engine Reassembly Torque Settings and Check List

Fasteners

Nuts & Bolts

Threads

Wrench

All about Nuts

Fractions to Decimals to Millimetres

Engine and other torque settings including a table of generic torque settings.

SWG - Inch - mm

Sheet metal and wire is measured in the industry by SWG (Standard Wire Gauge).

This table convert inches, and millimetres into SWG.

Thoughts on Torque and Tightening for Critical Fasteners

A link to a technical discussion of Thoughts on Torque and Tightening for Critical Fasteners


Top


General Data Summaries

MG YA and YT General data

MG YT General data - differences only

MG YB General data


Top


Wiring Diagrams


Top


SU Carburettors - Exploded parts diagrams

Single SU

Twin SUs

SU H Type Carburettor Technical Data

Recommended Needles

Needle sizes

Type H Carburettors - Tuning and Servicing


Top


Differences between the MG YA and the MG YB

MG YA / YB - that is the question ... by Neil Cairns


Top


SU Fuel Pump


Top


Problem Solving Diagnostics

Problem Solvers originally printed in MG Abingdon Classics magazine, November 1981

Maintenance Instructions for Lucas Electrical Equipment

Running Instructions for the Lucas Coil Ignition Equipment

Instructions for Lucas "Stop" Tail Lamps including ST 50 and ST 52


Top


Spark Plug Diagnosis

Click here to open a page on engine problems that can be diagnosed by inspecting the spark plugs.


Top


Generators and Control Boxes

A reprint of the book produced by Lucas called "Generator and Control Box Tests"


Top


Rebuilding Starter motors

A reprint from Practical Classics magazine, April 2009 on rebuilding your starter motor.


Top


Lucas Overseas Technical Correspondence Course

General Information

Lead Acid Batteries

Starting Motors

Coil Ignition

Generators

Generator Output Control

Vehicle Wiring Circuits

Lighting

Windscreen Wipers Horns

Semaphore And Flashing Light Direction Indicators

Interior Light Circuits

Electrically Controlled overdrive

 


Top


Salesman's Reference Book

The section from the Nuffield Home Market Publication's Salesman's Reference 1952. Published in 1952, the section applying to the MG YB is reproduced here.


The section from the Nuffield Export Publication's Salesman's Reference. Published in February 1953, the section applying to the MG YB is reproduced here.


Top


Special Tuning for MG Midget

This is a section from the Nuffield Export Publication's for Special Tuning of the XPAG Engine. Published in March 1950 and is reproduced here.


Top


Service Parts Price List

A Service Parts Price List for MG Y Partsreproduced here.

Top


Modern Petrol and Classic Cars - the Manchester XPAG Tests

Modern Petrol and Classic Cars - the Manchester XPAG Tests by Paul Ireland reproduced here.

Top