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Revision as of 01:49, 9 September 2007

Nissan chassis model B210 was the third-generation Sunny. They were sold during Model years 1974-1978 and marketed in various countries as the Datsun B-210 or Datsun Sunny. In some countries it was designated Datsun 120Y or Datsun 140Y, depending on the engine fitted.

It is common to confuse the "Datsun B-210" (B210) with the "Datsun 210" (B310), but they are different generations altogether, sold during different years. For more details and how the Sunny family was developed, see History of Datsun 1200.

1 Overview
2 USA
3 Donor Parts

Overview

The B210 was the third-generation Sunny, replacing the B110. The theme for the B210 re-design included:

improvement "to be more likeable and satisfactory to a greater number of people".
Exterior design: style of "Streamline and a Cut" with "Young and Dynamic" image -- instead of the "rational" styling of the B110. "Sharp and Soft" atmosphere, "Long-nosed proportion" (long wheelbase?), and "Streamed and Dynamic" style.
Interior design: "Oval Scoop Cockpit"
- Increased driver roominess. Front compartment larger, rear compartment smaller
Quieter operation (reduced NVH)

The side panel is finished by plum faces and sharp folds all over, and the stream of the fold and roof drip like an ebbing wave keeps sharpness in the free and easy touch.

Others have simply called it "coke-bottle" styling -- dynamic with a pinched waist.

reference: Service Bulletin Vol. 188 "Introduction of New Datsun B210 Series", Nissan Motor Co., Ltd., Tokyo, Japan, 1973.

USA

Serial Numbers

1974 Model years

HLB210-000001 to ~070000
HLB210-400000 to ~510001

1975 Model Year

HLB210-07001 to ~400000
HLB210-51001 to ~999999

1974

For the 1974 Model Year the goals were:

conforming to anti-pollution regulations
- EGR added
- Air Compensator now standard
requirements of FMVSS
- notably large heavy bumpers
- starter interlock

One of the most obvious changes from the B110 -- other than the all-new sheet metal -- is the large 5-mph "park bench" safety bumpers of the type fitted to all 1974 USA autos.

Since both affected performance, only the high-grade A13 engine was offered (model HLB210) to keep performance on par with the lighter Datsun 1200.

A13 Engine for USA market: see wikipedia:Nissan A engine.

New 1974 A Engine Redesign common to all A-engines
Tall-block engine (like A14) 30 mm higher than previous A12
77 mm stroke, up from 70 in A12 engine. Bore same as before

Also causing some consternation was an incredibly complicated starter interlock. A seven-input (!) transistor "brain box" prevented the engine from being started if the driver's seat was occupied but the belt unfastened.

Seat belts for 1974 were 3-point, but unlike B110 the shoulder belt is semi-permanently fastened to the seat buckle (no need for a zip tie). Also the inboard belts have a round flexible-wire design so they don't fall down around the seats when not in use. This is a good swap for the B110 belts.

1975

For 1975, the main design points were:

Introduction of the California-destined model (Chassis Code suffix 'N')
Introduction of factory Air conditioning. Previously, only dealer-installed Aircon was available
As usual, emission and safety requirement changes

Because of the performance-robbing emission and weight-gain changes in the USA market, the larger A14 Engine was adopted to keep performance on par with last year's model. This triggered a cascade of parts changes, including:

Intro of A14 Engine
- stronger 4-speed 60-Series Transmission instead of the 56-series fitted to A12 engines
- Heavier clutch to handle increased engine torque output (now 794 lbs, up from 694 lbs for A13 engine)
- stronger H150 Differential
  - New axle housing
  - shorter Propeller Shaft
- 5" wider Radiator
- Longer front coil springs
- stiffer rubber Engine Mounts
- Automatic Transmission changed from air-cooling to water cooling

Emission Controls

Intro of Air Pump to Sunny family
- Cylinder head recast with air passage to each exhaust port
Evaporative changes from crankcase-storage to charcoal cannister
Intro of spark delay valve
Leaner carb settings:
- Improved heating duct
- PTC Automatic Choke
Remove engine compartment heat from engine
- Intro of fresh-air ducted air cleaner
- Two-stage idle compensator
- Heat Shielding:
  - plate around carb
  - insulator between throttle body and center body
  - shield between intake and exhaust manifolds
  - stainless bolts in carb (to lessen heat transfer)
  - stainless bolts for manifold mounting

California Model: In 1975, California had a population of 20+ million. This size made it a very important market to international companies, so when California legislated the strictest emission limits in the world, the automakers said "Yes, Sir!"

Intro of catalytic converter, which made the following needed:
- Modified floor pan
- Converter Floor temperature warning lamp
- Floor insulation (full jute padding)
- Routing of fuel, brake and EVAPO tubes rerouted under car:
- Exhaust piping insulators
- Intro of fully-transistorized ignition. See B-210 Electronic Distributor Swap
- Altitude compensator (for high-altitude markets within California)

Safety:

bumper overriders add (rubber bumperettes, a la B110) to meet the Cost Savings Act. 1974 models had 'smooth' bumpers
Illuminated light switch introduction
Brake Hose Marking (FMVSS No. 106)
Bumper height requirements (FMVSS No. 215), raised ~ 2 inches

Cool Options for 1975:

Wood-grain shift knob (Canada only)
Three-spoke steering wheel (Canada only)

Donor Parts

Many 510 and 610 steering, suspension and brake parts fit B210
Many parts from B210 will fit B110 (and vice-versa). See article: B210 Parts Donor
See General parts for a list of many parts like headlights, battery, etc from most cars that fit will B210.

Steering parts
- Steering gear is same as 610, size 45 mm gear spacing. 15.0 ratio, 3.14 turns lock/lock @ 38 degrees
- Steering column is separate from gear (B110 has integral gear/column)
- Side rod is size of 610, but different length
- Cross rod, differs from 610 in bend and size
- Idler: same as 610
- Gear arm: same as 610
Front suspension and brakes: Many Datsun 610 parts fit B210 (USA models). These differ from B110
- Tranverse link: 510/610 part
- Ball joint: 610 part
- Wheel bearing: 510/610
- Hub: 510/610
- Rotor 232 mm same as 510/610. B110 uses 212.5 mm
- Caliper and pads: Annete 14/15A same as 610 (B110 uses 12/14A)
- Strut interior parts (or insert). Larger diameter than B110
Brakes
- M45 Master Vac (booster) same size, but differs from 510/610
- Brake master cylinder 5/8 bore, part is same as 610. Same bore as B110, but different mounting.
- NP proportioning valve same as 610 (B110 has no valve)
Engine crossmember (wider than B110)
Diff U-bolts and mounting pads (wider)
Rear Wheel bearings (larger)
Lug nuts. B210 uses larger 13/16 size. B110 uses 3/4 size

For a list of B110 parts that fit B210, see B210 Parts Donor.

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B210