Description:

1985 Mini Z-Cars – Honda K20 – 233bhp

Price: £28,000
Location: Norwich, Norfolk

For sale is my rear-engined Z-Cars Honda K20 Mini. This is a properly sorted example that's been built using quality components throughout and is aimed at anyone looking for an incredibly capable fast road or track car.

Producing 233bhp (dyno proven) and weighing approximately 750kg, the car boasts an estimated 310bhp per tonne, putting it firmly into modern supercar territory for power-to-weight ratio. The performance is every bit as exciting as the figures suggest, yet the car remains confidence-inspiring thanks to its chassis, suspension and braking package.

The build has been carried out to a high standard and comes with thousands of pounds' worth of invoices, including paperwork from Z-Cars.

Engine & Management

• Honda K20 engine
• 233bhp (dyno proven)
• Full intergrated roll cage with door bars
• Haltech Elite 1500 ECU
• Haltech PD16 power distribution module
• Haltech IC-7 digital dash
• Haltech wideband 
• Custom Haltech wiring harness 
• New engine harness
• Recently fully serviced with fresh engine oil, gearbox oil and all fluids
• New spark plugs
• Brand new Exedy clutch
• Lightened flywheel
• Skunk 2 inlet manifold
• Genuine Honda RSX 410cc injectors
• Converted to drive by wire throttle with new Bosch DBW Throttle body

Transmission

• Honda 6-speed gearbox
• Limited-slip differential (LSD)

Suspension & Brakes

• Protec suspension
• Wilwood 4-pot front brakes
• Two-piece front discs
• Rear disc brake conversion

Wheels & Tyres

• 13x7 Compomotive wheels
• Rear: 225/45 R13 Toyo Proxes R888
• Front: 175/50 R13 Yokohama Advan

Interior

• Bride bucket seats
• OMP harnesses
• Carbon fibre dashboard
• Steering wheel-mounted controls for:
  • Indicators
  • Horn
  • Wipers
  • Washers
  • Headlight dip/main beam
  • Starter button

Exterior

• Carbon fibre roof
• Carbon fibre boot lid
• Good paintwork overall with only a few age-related marks, exactly what you'd expect from a well-used 40-year-old Mini rather than a freshly restored show car.

The car is fully UK registered, V5 correctly updated. It is HPI clear and has an MOT until September 2026.

This isn't a half-finished project or a freshly completed conversion. It's a well-developed, reliable example that's had the expensive work done and has recently benefited from a full service, new clutch and lightened flywheel, meaning it's ready to be driven and enjoyed.

Z-Cars Minis rarely come onto the market, particularly examples equipped with modern Haltech engine management and power distribution with CANBUS communication throughout. Whether you're looking for an exciting road car, a serious track day weapon or a unique addition to your collection, this is a fantastic opportunity.

The sale includes the dyno printout and a substantial history file with invoices documenting the build.

£28,000

Located in Norwich, Norfolk.

Please get in touch with any questions or if you'd like to arrange a viewing. I'm happy to provide additional photos, videos, copies of the dyno sheet and invoices for genuinely interested buyers.

Keyword Search Terms:

zcar, mini, k20, honda