2000GT

1967-1970 / Coupe / Japan

All 2000GT problems All workshop issues

Minor Body and Structure

Steel Chassis Corrosion

Symptoms

Surface rust progressing to pitting and eventually perforation of the steel backbone chassis, floor sections, and structural members.

Cause

The steel chassis was protected with factory-applied coatings that degrade over decades. Trapped moisture in enclosed sections accelerates hidden corrosion.

Fix

Surface rust: wire brush, treat with rust converter, prime, and protect with a quality chassis sealant.

Perforation: cut out affected metal and weld in new steel.

Major chassis repairs require a rotisserie and specialist fabrication skills.

Cost: $5,000-30,000+ AUD depending on severity.

Cost mentioned in fix

Cost: $5,000-30,000+

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// More 2000GT problems

Other known issues

Common Body and Structure

Galvanic Corrosion at Mixed-Metal Joints

White powdery corrosion on aluminium panels, particularly where they attach to the steel chassis or steel substructure. Panels may become loose or develop cracks at attachment points.

Minor Body and Structure

Fibreglass Nose Section Cracking

Hairline cracks in the fibreglass nose section, particularly around stress points (headlight surrounds, bonnet latch area, mounting flanges).

Common Engine, 3M 2.0L DOHC Inline-6 (Yamaha-Built)

Carburettor Deterioration and Synchronisation Drift

Rough idle, uneven power delivery, flat spots during acceleration, poor fuel economy, and difficulty starting. The engine may run rich on some cylinders and lean on others.

Critical Engine, 3M 2.0L DOHC Inline-6 (Yamaha-Built)

Timing Chain Stretch

Rattling or slapping noise from the front of the engine, particularly on cold startup. In advanced cases, the cam timing shifts, reducing power and causing rough running.

Critical Engine, 3M 2.0L DOHC Inline-6 (Yamaha-Built)

Oil System Leaks (Dry Sump)

Oil puddles under the car, oil residue on the engine and chassis, dropping oil level in the external oil tank. Potential oil starvation if leaks are severe.

Common Engine, 3M 2.0L DOHC Inline-6 (Yamaha-Built)

Valve Clearance Drift

Ticking noise from the valve train at operating temperature, gradual loss of power, uneven cylinder performance.

View all 13 2000GT problems