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  Engine numbers

 

The engine number can be found attached to a plate attached to the engine block.



The actual serial number is prefixed by four groups of code letters/numbers indicating engine model, gearbox and engine compression ratio.

 

Prefix group 1

 

Code

  Model

10 AMW

Austin/Morris 1100

10 AH

Austin/Morris 1100 with positive crankcase ventilation

10 AG

1100 Automatic models

10 AM

Morris 1100 (Australian model) Imported from UK

10 AR

Morris 1100 (Australian model) Imported from UK

10 GR

MG 1100

10 GRB

Wolseley 1100, and MG 1100 with positive crankcase ventilation

10 R

Riley Kestrel 1100

10 V

Vanden Plas Princess 1100

10 Y

Morris 1100 (Australian model) Built in Australia

12 AM

Morris 1300 (Australian model) Imported from UK

12 AR

Morris 1300 (Australian model) Imported from UK

12 G

All 1300 Models

12 H

12 H 157

Austin America

12 H 185

Austin America

12 Y

Morris 1300 (Australian model) Built in Australia

14 Y

Morris 1500

 

Prefix group 2

 

Code

  Transmission type

A

Automatic transmission

U

Central gear change

SA

Close ratio gear box

TA

Standard ratio gearbox

 

Prefix group 3

 

Code

  Compression type

H

High compression

L

Low compression

 

Prefix group 4

 

The last group of numbers is the serial number of that particular power unit e.g. 546231

An example of an engine number would be: 12 H - SA - H - 500000

 

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