Production changes

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Production modifications

 

10/1953 ZA first shown at London Motor Show


chasis no.:

 

1954

 

501

ZA on sale

750

Front door 1/4 light glass introduced

1151

Brake cable assembly

1783

Larger rear light

2127

Fuel filler cap lock modified from pouish button to key type

2994

Speedometer

4329

Bonnet release rod modified

March 1955:

 

6360

'Tintop' dash replaced by wood

6501

Minor chages to instruments

8072

Radiator grille changed from 8 slats per side to 7

8770

Front seat mounting rails and revised seats

9426

Ash trays in rear of front seats

9678

Additional drain pipe added to scuttle vent chamber

10544

Fuel filler cap lock reversed to original push-button

11260

Screenwash bottle and pump modified (external pump)

11740

Additional soundproofing felt added

12036

Rear bumper overriders modified

14933

Illumination in clock

15296

Front 1/4 light glass hinge points changed

15503

Jacking points changed from bumpr brackets to centre of sill panel

15545

Revised steering rack

15821/15908

Bonnet stay replaces torsion-bar support

June 1956

 
  Between cars 18101 and 18577, a series of Hybrid ZA/ZBs werde built, as the new ZB modifications were introduced. 18577 beeing the first outright ZB. The hybrids incorporated all or some of the following :

18101

Engine powerincreased from 60 bhp to 68 bhp
  Higher compression ratio
  11/2 carburettors introduced
  Twin valve springs
  Modified inlet and exhaust manifolds. New ais cleaner
  Rear axle 4,55:1
  Speedometer

18576

Last ZA produced

18577

First ZB produced
  Bodyshell and underframe mods.
  Bodywork chrome
  Courtesy light
  Revised dashboard
  Dished steering wheel and horn/trafficator assembly
  Map pocket deleted
  Full width front parcel shelf introduced
  Fuel filler lock modified/Revised lock reintroduced
  Longer speedo cable

18708

Varitone option available

21072

Accelerator cable

22738

dto.

27110

Handbrake cable fork becomes threaded block

37100

Production ends