Marine engine rebuilds in NZ
Every marine engine rebuild here runs through a dedicated clean air build room at Marsden Cove. Stripped, measured and assembled away from the workshop floor.
Talk to usBuilt in clean air
A dedicated clean air engine and gearbox build room, separate from the workshop floor. Engines are stripped, measured and assembled in there, away from grinding dust and passing traffic.
Rebuild clearances are measured in hundredths of a millimetre, and the room keeps those numbers honest. Grit in a fresh bore or bearing is how a rebuild fails early, so it never gets near the job. One technician owns your build from strip down to run in, and every measurement and torque figure sits with the person doing the assembly.
If it turns a prop, we rebuild it
From a full engine reconditioning job through to gears and drives, everything comes through the same room and the same process.
How a rebuild runs
Every job runs the same four steps, whatever is on the stand.
The engine comes apart completely and every wearing part is measured against factory spec. What is serviceable, what is worn and what is damaged all gets recorded.
You get a report and an estimate before anything proceeds. Nothing is machined, ordered or assembled until you have approved it.
Machining runs through our trusted specialist network, matched to the job. Every part is checked here against the numbers before it goes near assembly.
The engine goes back together in the clean air room, then it is run in and tested before handover.
Sometimes the answer is a new engine
Sometimes a rebuild is the right money and sometimes a repower is. We price both, then tell you which way we would go if it were our boat, and why. If the answer is a repower, the detail lives on the pages below.
Straight answers
How long does an engine rebuild take?
It depends on what the strip down finds and on machining lead times through the specialist network. Plan on weeks rather than days for a full rebuild. You get a timeline with your report and estimate, and we tell you straight away if it moves.
Should I rebuild or repower?
That depends on the engine and the boat behind it. A sound block with worn internals is usually worth rebuilding, while a cracked block, obsolete parts or a tired drive often makes a repower the better money. We price both and give you a straight answer. The repower side is covered on the Outboard Servicing and Repower page and the Volvo Penta Sales and Service page.
Do you rebuild gearboxes and lower units?
Yes. A gearbox rebuild runs the same process as an engine: strip, measure, report and estimate, then assembly and testing. That covers outboard lower units, inboard boxes and drive legs.
What happens if you find more damage once it is apart?
We stop and call you. You get an updated report and estimate covering exactly what we found, and nothing proceeds until you approve it. No surprises on the invoice.
Engine tired or gearbox noisy?
Talk to us before you spend anything. We will tell you what it actually needs.