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[Datsun 1200 encyclopedia]

Front Suspension Specification

From Datsun 1200 Club

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Category: Front Axle And Front Suspension

This page is for factory specifications. For modified settings, see Category:Suspension Modifications.


Wheel Alignment

Camber, Caster and Toe-in

See main article: Wheel alignment

Factory Front Suspsension Specifications

Coil Spring Specifications

North America specification
B310 1980-1982B310 1980-1982
B310 1980
wire diameter10mm10.5mm10.8mm10.5mm10.8mm10.5mm
coil diameter110mm O.D. 
100mm I.D.
100mm100mm 100mm100mm100mm
Free length338mm 101977: 375mm 
1974: 353mm
1977: 388mm375mm
358mm CAN A12A
366mm USA A12A
381mm USA
375mm CAN
Effective Turns6.257.58.25???
Spring constant1.6kg/mm
(89.6 lb/in)
(90.7 lb/in)
(92.4 lb/in)
(90.7 lb/in)

Effective Turns: Since the coils are closed on each end, they contribute less to the spring rate. The Actual Turns are about 1.5 more than effective turns.

Note that B310 spring is identical to North America B210 spring. The B310 however uses a different upper spring seat.


120Y is A12-powered B210. It uses similar suspension to B110, unlike the A14-powered B210.

Spring rate: 90.7 lbs/in.

page FA-16 of FActory Service Manual, released 1976
Coil Springs
Wire Diameter - 10.5 mm (0.413 in)
Coil Diameter - 100 mm (3.94 in)
Coil Turns - 9.0
Coil effective Turns - 7.5
Free length - 357.5 mm LH (14.07 in), 346.5 mm RH (13.64 in)
Spring Constant - 1.62 KG/MM (90.7 lb/in)

1976-up B120

B120 pickup from October 1975:

Coil Spring

  • Wire diameter: 10mm (0.39 in)
  • Coil diameter: 100mm (3.94 in)
  • Loaded (normal load) length: 326mm (12.83 in)
  • Effective turn: 6.2
  • Spring constant: 1.6 kg/mm (90.0 lb/in)

Strut damper

  • Piston Rod diameter: 18mm (0.71 in)
  • Piston diameter: 25mm (0.98 in)
  • Stroke: 164mm (6.46 in)

Damping Force at 0.3m/sec (1.0 ft/sec)

  • Expansion/Rebound: 38-58kg (84-128 lb)
  • Compression: 17-27 kb (37-60 lb)

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