Crankshaft 

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The crankshaft is the heart of your engine, converting combustion energy into rotational power. Accurate inspection, machining and balancing are essential to ensure smooth operation, reliability and long service life.

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Whether your crankshaft is worn, damaged, scored, out of specification, or requires balancing as part of an engine rebuild, our experienced team can assess and restore it to manufacturer specifications.

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Southern Engine Reconditioners is the only engine reconditioning workshop in Dunedin offering both in-house crankshaft grinding and dynamic balancing services, providing complete crankshaft reconditioning under one roof.

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Our services include:

• Crack Testing

  • Detects cracks and structural defects that may affect reliability and service life.

• Crankshaft Grinding

  • Restores worn or damaged journals to the correct size and finish for reliable bearing operation.

• Crankshaft Polishing

  • Produces the correct journal surface finish to maximise bearing life and performance.

• Journal Inspection & Measurement

  • Ensures critical dimensions meet manufacturer specifications.

• Balancing Services

  • We offer in-house balancing for crankshafts, flywheels, harmonic balancers, conrods, pistons and complete rotating assemblies. Balancing helps reduce vibration and stress on engine components, improving smoothness, reliability and long-term engine life.

  • This is especially beneficial for performance rebuilds, classic or collectible engines, and complete rebuilds where smooth operation and accuracy are a priority.

• Runout & Straightness Checks

  • Verifies crankshaft alignment and serviceability.

• Crankshaft Preparation for Rebuild

  • Final inspection and preparation prior to engine assembly.

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By carrying out crankshaft grinding and balancing in-house, we maintain complete control over quality, turnaround times and accuracy throughout the rebuild process.

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