International Alliance of Morris Owners
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SERIES III TWENTY FIVE-SIX

The Series III version of the Twenty-Five Six was a modification of the Series II, with an overhead valve push-rod engine. The same basic body design with wheel size and colour presentation changed. The fixed head version of the saloon was both available in Series III form. Rear boot protrusion now had an external access. About September 1938 a Morris badge incorporating a reflector was added to the boot lid. Telescopic adjustable steering column. The Series III Twenty-Five-Six was notavailable after the war.

 

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Twenty-five Series III

Engine

 
Twenty-five

Number of cylinders

6
Bore mm
82
Stroke mm
110
Capacity cc
3485
Valves
overhead
RAC hp rating
25.01
CR  
BHP (graphs)
90.3
at rpm
3800
Valve timing
inlet opens
ATDC
inlet closes
ABDC
exhaust opens
BBDC
exhaust closes
ATDC
Coolant
water
Carburation
SU

 

Dimensions
 
Twenty-five
Wheelbase
10'1"
Track
48"
Length
16'0"
Width
5'10"
Weight
31
Front suspension
half elliptic
Rear suspension
half elliptic
Axle ratio
4.45
Tyre size
600 x 17
   
 

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Performance
0 to 50 mph secs
14.8
standing quarter secs
 
Fuel consumption mpg
16-20
Maximum speed
77

 

Body styles
 
Doors
 
Saloon sliding head
4
x
Special coupe
2
x

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Chassis numbers
Start
 S3/TF7532
Finish
S3/TF62940  
Chassis number shared with the the Fourteen

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Books and articles (available on the web)

 

Other sources
The Morris Owner
Issue
page
Description of new Series III Models
9/37
676
Description of new Series III Models
10/39
746
The Motor
Twentyfive Specification
14/3/39
217
Twentyfive Road Test
22/2/38
143-4
The Autocar
Twentyfive Road Test
31/12/37
1294-5
Motor Commerce
Electrical Test Data D453
4/46
147-8

If anyone has copies of there articles please contact the webmaster so that they can be included on this site for reference.

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