Engine machining workshop

Bore, hone, deck and rebuild engine blocks and heads for garages, workshops and local motorists.

Machinist working on an engine block on a metal lathe in a workshop.
Startup costA$60k to A$200k
Monthly revenueA$8k to A$30k
Time needed35+ h/week
First incomeMonths
  • A$60k-200k
  • Full-time
  • Own premises

Estimates for a small start in Australia, not guarantees.

What it is

A small industrial unit with machines for reconditioning engines: boring and honing blocks, surfacing heads and decks, line honing, crank grinding or balancing, and pressure testing. Many shops also supply parts and assemble engines.

Your first three steps

  1. Visit local garages and engine builders to find out which jobs they send away and what turnaround times they get now
  2. Price up a second-hand equipment package and a suitable industrial unit with three-phase power
  3. Check zoning and council requirements for the unit, then arrange insurance and an ABN before ordering machines
Who pays

Mechanics and garages, specialist engine builders, performance and classic car owners, 4WD and diesel owners, and farms or small fleets.

How it makes money

Charge per job or per operation (for example boring a block, resurfacing a head), plus a margin on parts and consumables. Repeat trade from garages gives steady work.

Skills that help
  • Engine machining or a mechanical trade background
  • Precision measuring and attention to detail
  • Building relationships with garages
Watch out for
  • Council or zoning approval for industrial use and noise limits at your chosen unit
  • Disposal of coolant, oils and metal swarf, check your state EPA and trade waste rules
  • Public liability and product liability insurance, as a faulty rebuild can be costly
  • Work health and safety duties for machine guarding and workers compensation once you hire
  • Second-hand machines can need repairs or recalibration, so inspect before buying
  • Quality is judged on measurements, so keep records of tolerances for each job

🔒 Full research report for Australia

Real cost breakdown with current prices, licences and registration checklist, local competition, pricing, break-even and a 30-day launch plan, with sources.

Coming soon

Questions people ask

How much does it cost to start an engine machining workshop?

Estimates suggest startup costs typically sit around $60,000 to $200,000, depending on the unit and the machines you buy. Second-hand machines can need repairs or recalibration, so inspect them before buying.

How much can an engine reconditioning workshop earn?

Monthly revenue is typically estimated at around $8,000 to $30,000, depending on your machine range, location and how many garages and workshops you win as customers. These are estimates only, so check them against your own costs.

What rules and insurance should I check before opening an engine machine shop?

Check council or zoning approval for industrial use and noise limits, and your state EPA and trade waste rules for coolant, oils and swarf. Also check public and product liability insurance, work health and safety duties, and workers compensation once you hire.

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Photo: mrpstips on Pixabay

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