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The Complete Guide to Classic Datsun Cars and Trucks
1966 Nissan Junior 41 Truck
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In 1966 an updated version of the Nissan Junior was launched, the 41 series. 
 The 1966 41 series Junior is actually exactly the same as the previous 40 series Junior in every way, except for the engine. The new 41 model was fitted with the new 2 litre H20 engine, which was just introduced as the base model engine for the new 130 series Nissan Cedric. The new H20 was a 1982cc 4 cylinder OHV engine which produced 99hp at 5000rpm. Initially the H20 had a 3 bearing crankshaft, but halfway through 1967 it was changed to a 5 bearing crankshaft. At the same time as this change all the engine bolt threads changed from UNF and UNC to metric. The 1488cc G series engine, which was the entry level motor for the 40 series has now been dropped from the range. The only other engine option was the SD22 diesel engine. 
 The grille on the first of the 41 Juniors is the same as the one used on the previous 1964 40 series, which consists of seven horizontal bars and three vertical bars in a section between the headlight surrounds, and below that is a wide horizontal strip with four horizontal slots cut into it. The grille was chrome plated and it had a red Junior badge mounted to it, and the strip under it was painted the same colour as the body. The front bumper bar is painted white and has a slot for an emergency crank handle above the number plate. 
 By 1967 the 41 series Junior was looking a bit dated, and an attempt was made to update it's appearance. 
The 1967 model 41 has a new grille with 4 equal sized wide horizontal bars. The panel under the grille has also been changed and instead of being a straight horizontal panel the top of it now curves upwards at each end to create a grille and headlight opening that is an elongated oval shape. This new panel now has three large horizontal slots cut out of it instead of the four slots in the previous model. The bumper bar no longer has the slot for the emergency crank handle mounted above the number plate. On this model the bumper, grille and headlight surrounds are all painted silver. Instead of two strips on the bonnet there is now a large shield shaped badge. The instrument binnacle on the previous models was painted a dark grey charcoal sort of colour, from 1967 onwards this panel was painted silver. 
 In 1968 another update occured. The only change at this time was a new grille, with a very wide horizontal bar top and bottom, and three thin horizontal bars in between. Everything else remained unchanged. 
 The badges on the side of the vehicle say Nissan Junior, with a 2000 badge underneath. 
 The 41 series Junior was in production until September 1970, by which time it had been in production for over eight and was now a very outdated vehicle. The 41 was replaced by the 140 series Nissan Junior, which was a much more modern vehicle, though not a popular one. The 140 was initially offered in several export markets, but was not a success, and after that it was sold primarilly in Japan and other Asian markets. The 140 Junior continued on until production ended in 1982. It was not replaced.
A sales brochure for the 1962 Nissan Junior 40

1966 Nissan Junior 41 Specifications  
Length - 4655mm   
Width - 1690mm   
Height - 1745mm   
Wheelbase - 2800mm   
Weight - 1485kg   
Top speed - 120kph  

Transmission   
Column change 4 speed
Engine Specifications    
Model - H20 
OHV 4 Cylinder  
Capacity - 1982cc   
Bore & Stroke 87x83mm   
Power - 99hp@5000rpm   
Torque- 123ft/lb@3600rpm   
Compression - 8.2 : 1   
Carburettor - Hitachi dual throat down draught 
Final drive 4.62 : 1 
 
Model Variations
 
Nissan Junior 41 
The truck version was available with either a "styleside" cargo area as pictured here, or with a steel cargo area with fold down sides, or as a cab/chassis, which was called the 41-A.
 
Nissan Junior 41 - 1967 Update 
In 1967 there was a minor cosmetic upgrade to the Junior. The 1967 model 41 has a new grille with 4 equal sized wide horizontal bars. The panel under the grille has also been changed and instead of being a straight horizontal panel the top of it now curves upwards at each end to create a grille and headlight opening that is an elongated oval shape. This new panel now has three large horizontal slots cut out of it instead of the four slots in the previous model.
Nissan Junior 41 - 1968 Update 
In 1968 another update occured. The only change at this time was a new grille, with a very wide horizontal bar top and bottom, and three thin horizontal bars in between. Everything else remained unchanged.
Nissan Junior F41  
The Junior 41 could be ordered as the 41-E, also known as the "E Chassis", which gave you only a running chassis with the front section and the windscreen, and nothing else. Another option based on this "E Chassis" was the F40, which was a small fire truck version.
 
Nissan Caball C142  
In addition to the conventional Junior truck there was also a cab-forward version based on the chassis and mechanicals of the 41 called the Caball C142. More information can be found on the C142 page.
1970 Nissan Junior 140  
After the 41 series Junior finished production it was repleced by the all new 140 series Junior. The new Junior continued to use the H20 engine and was also offered with a 1600 as well. 
The Junior was rather confusingly offered as either a Nissan Junior and also sold as the Nissan Miler in some markets. This was interesting as the name Miler was the name of the large Prince truck before Nissan and Prince merged in 1966.
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