Hillman Super Minx

1961–1967 · its own car, not a big Minx · front discs from October 1962

Different shell, longer wheelbase, its own glass and its own brakes. And in New Zealand it also wore a Humber badge.

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Not listed? Plenty of parts suit several marques and never get the model name in the title — ask us and we will check the books for you.

About the Hillman Super Minx

The Super Minx was originally intended to replace the Audax Minx and was judged too big, so Rootes built it as a supplementary model and the two ran side by side from 1961 to 1967. That history matters at the counter, because it means the Super Minx is not a stretched Minx: it has its own shell, its own wheelbase, its own glass and its own brakes. The Mk I of October 1961 runs a 1592cc engine at 62bhp with a cast-iron head and Lockheed drums all round. Front discs arrive with the Mk II in October 1962, which also deleted the greasing points, revised the axle ratio and swapped the Smiths Easidrive automatic for a Borg-Warner 35.

September 1964 is the glass breakpoint and it is a big one. The Mk III replaced the wrap-around rear screen with a six-light glasshouse, and the windscreen, side windows and roof were all modified to suit. Mk I and Mk II glass does not fit a Mk III or Mk IV. The Mk III also brought synchromesh on first gear, a timber-faced facia and reclining front seats as standard; the Mk IV of October 1965 went to 1725cc. Two things do cross to the Minx, and they are worth knowing: the 1592cc engine went into the Minx Series IIIC in a less highly tuned state, and the Minx Series V runs Super Minx front suspension. Body and glass never cross. And in New Zealand this car was also sold as the Humber 90.

Hillman Super Minx — specification & changes within the model

Brakes: Mk I, from October 1961: Lockheed drums all round, unassisted, 9in. Front discs arrive with the Mk II in October 1962 — 10.3in, Lockheed. Wikipedia’s wording implies the Mk I already had discs; its own specification line and two other sources say drums. We go with drums for the Mk I.
September 1964 — the glass breakpoint: Mk III replaced the wrap-around rear screen with a six-light glasshouse, and the windscreen, side windows and roof changed with it. Mk I/II glass will not fit a Mk III or Mk IV.
The marks: Mk I Oct 1961, 1592cc 62bhp, drums · Mk II Oct 1962, front discs, greasing points deleted, BW35 automatic · Mk III Sep 1964, six-light rear, first-gear synchromesh, timber facia · Mk IV Oct 1965, 1725cc.
Bodies: Saloon 1961–66 · estate 1962–67 · convertible 1962–64 only.
Suspension and steering: Independent front with coil springs and an anti-roll bar; live rear axle on leaf springs. Recirculating-ball steering, no power assistance. Four-speed manual with a floor lever, synchromesh on the top three from the start.
What crosses to the Minx — and what does not: Crosses: the 1592cc engine (fitted to the Minx Series IIIC, less highly tuned), and the front suspension (the Minx Series V runs Super Minx front suspension). Never crosses: bodyshell, glass, doors, panels.
Same car, other badges: Singer Vogue (twin headlights, 66bhp then 84bhp, discs from Series II in 1963) · Humber Sceptre Mk I and Mk II · and in New Zealand the Humber 90. But watch the Sceptre: it kept the panoramic screen and finned roof when the Hillman and the Singer went six-light in 1964, so a 1965 Super Minx and a 1965 Sceptre have different glass.
Not claimed: Mk III and Mk IV brake dimensions, and earth polarity.