Datsun DB series

The Datsun DB series was introduced in 1948 as a more modern, ponton-bodied complement to the Datsun DA. It was based on pre-war Datsun designs, themselves closely based on the Austin Seven. A lower-cost range with the same underpinnings, called the DS series, took over from the DA and was sold in parallel. The cars shared their chassis with the contemporary small Datsun trucks, which sold in considerably larger numbers.

Datsun DB series
Overview
ManufacturerNissan
Also calledDatsun Deluxe
Production1948-1954
Body and chassis
LayoutFR layout
RelatedDatsun DS series
Chronology
SuccessorDatsun 110

Datsun DB
Datsun DB
Overview
Production1948-1950
Body and chassis
Body style2-door sedan
LayoutFR layout
RelatedDatsun 2124 Pickup
Powertrain
Engine722 cc Type 7 SV I4
Transmission3-speed manual
Dimensions
Wheelbase2,005 mm (78.9 in)
Length3,150 mm (124.0 in)
Width1,330 mm (52.4 in)
Height1,570 mm (61.8 in)
Curb weight520 kg (1,146 lb)
Chronology
SuccessorDatsun DB-2

The Datsun DB was introduced in March 1948 as the first postwar Japanese vehicle with modern styling. After a trial production period, series production commenced in August 1948.[1] The DB (based on the same pre-war chassis as used on the Datsun 2124 truck and most other Datsuns since the early 1930s) resembled the 1947 Crosley, with some minor differences: the front end was longer, windshield shape was rectangular, grille design was different. The engine was the pre-war 722 cc Type 7 sidevalve four-cylinder (rated at 15 horsepower) with a floor-shift 3-speed manual. The DB was in production until August 1950, when it was replaced by the Datsun DB-2.

Datsun DB-2
Datsun DB-2
Overview
Production1950-1951
Body and chassis
Body style
  • 2-door sedan
  • 2-door station wagon
LayoutFR layout
Powertrain
Engine860 cc Type 10 SV I4
Transmission3-speed manual
Dimensions
Wheelbase2,005 mm (78.9 in)
Chronology
PredecessorDatsun DB
SuccessorDatsun DB-4

The Datsun DB-2 was introduced in August 1950 and was redesigned to look less like the 1947 Crosley; the dorsal fin that ran down the hood and front end was removed and replaced by a crease and the front end was almost completely flat. The grille became a single piece (it was changed in 1950), above the grille was where the license plate attached. The mechanicals were carried over from the DB although the engine was upgraded to the somewhat larger 20 PS (15 kW) Type 10 model. The 3-speed transmission remained. A station wagon version called the DW-2 was also available; it was Nissan's first and only "woody" wagon. The DB-2 was in production until 1951, when it was replaced by the four door Datsun DB-4.

Datsun DB-4
Datsun DB-4
Overview
Production1951-1953
Body and chassis
Body style
  • 4-door sedan
  • 4-door station wagon
  • 3-door van
LayoutFR layout
Powertrain
Engine860 cc Type 10 SV I4
Transmission3-speed manual
Dimensions
Wheelbase2,150 mm (84.6 in)
Length3,850 mm (151.6 in)
Width1,480 mm (58.3 in)
Height1,560 mm (61.4 in)
Curb weight890 kg (1,962 lb)
Chronology
PredecessorDatsun DB-2
SuccessorDatsun DB-5

In 1951, the four-door Datsun DB-4 was introduced (the DB-3 designation was skipped, but this designation may or may not have anything to do with the number of doors, as the later DB-5 and DB-6 also have four doors). The DB-4 was based on a lengthened DB-2 chassis to allow room for the new body. The front end remained the same, but everything from the firewall back was all new. The windshield now had curved edges instead of the straight edged class on the DB-2. The front end was changed; the chrome-plated grille was replaced with a pressed steel unit that was painted the same color as rest of the car; it also featured a pair of turn signals. Above the grille was a wide red and chrome badge with the Datsun name in the middle; above this was a round badge. The engine and transmission were carried over from the DB-2. Like the DB-2, a station wagon version (called DW-4) was available, but this one did not have wooden panels. A three-door van called the DV-4 (with or without side windows) was also available. The DB-4 was in production until January 1953, when it was replaced by the Datsun DB-5.

Datsun DB-5
Datsun DB-5
Overview
Production1953-1954
Body and chassis
Body style4-door sedan
LayoutFR layout
Powertrain
Engine860 cc D10 SV I4
Transmission3-speed manual
Dimensions
Wheelbase2,150 mm (84.6 in)
Length3,805 mm (149.8 in)
Width1,480 mm (58.3 in)
Height1,560 mm (61.4 in)
Curb weight890 kg (1,962 lb)
Chronology
PredecessorDatsun DB-4
SuccessorDatsun DB-6

The Datsun DB-5 was introduced in February 1953. The DB-5's body remained the same except for intakes added (with two chrome horizontal bars) between the headlights. The engine was an upgraded version of the new 860 cc Datsun D10 side valve four-cylinder, which now produced 25 horsepower. The DB-5 was slightly redesigned in January 1954; the side indicators were changed and it now had a larger, wrap-around rear window with the glass cast in three pieces.[1] The DV-5 Light Van (a commercial vehicle with side windows) received the same updates in 1954 as did the DB-5, with the layout of the side windows changed rather than getting a new rear wind screen.[2] On the original design there were two equally spaced rear side windows, while on the facelift model the C-pillar migrated backwards so as to not obstruct the view from the (folding) rear seat. The DB-5 was produced until June 1954, when it was replaced by the Datsun DB-6.

Datsun DB-6
Datsun DB-6
Overview
Production1954.07 - 1954.12
Body and chassis
Body style4-door sedan
LayoutFR layout
Powertrain
Engine860 cc D10 SV I4
Transmission4-speed manual
Dimensions
Wheelbase2,150 mm (84.6 in)
Length3,805 mm (149.8 in)
Width1,480 mm (58.3 in)
Height1,560 mm (61.4 in)
Curb weight890 kg (1,962 lb)
Chronology
PredecessorDatsun DB-5

The Datsun DB-6 was introduced in July 1954 as the final model in the DB series. The DB-6's body was carried over from the DB-5, as well as the D10 engine. The only change to the DB-6 was a 4-speed manual transmission. There was no direct replacement for the DB series; Nissan marketed the Nissan-built Austin A40 Somerset and A50 Cambridge as their upmarket cars until 1960, when the Nissan Cedric was released.

References
  1. "昭和20年代のダットサン デラックスセダンDBとスリフトDS" [Showa '20s Datsun Deluxe Sedan DB and Thrift DS]. 自動車カタログ棚から [Off the Car Catalog Shelf] (in Japanese). Archived from the original on 2016-06-01.
  2. Ozeki, Kazuo (2017-04-27). カタログでたどる日本の小型商用車1904～1966 [Catalog records of Japanese Light Commercial Vehicles: 1904-1966] (PDF) (in Japanese). MIKI Press. p. 33. ISBN 978-4895226684.
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