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MOTRS

Torana (LJ-LX) / GTR / SLR / A9X

1972-1979 / Coupe / Sedan / Hatchback / Australia

All Torana (LJ-LX) / GTR / SLR / A9X problems All workshop issues
Minor Transmission

Gearbox Synchro Wear (Manual)

Symptoms

Grinding on gear changes, particularly second and third gear.

Cause

Synchro rings wear from use. Second gear wears fastest because it's the most-used ratio.

Fix

Gearbox rebuild with new synchro rings.

Budget $800-1,500.

The M21 4-speed is well-documented with good parts availability.

Cost mentioned in fix
Budget $800-1,500

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// More Torana (LJ-LX) / GTR / SLR / A9X problems

Other known issues

Common Transmission

Trimatic Automatic Reliability

Slipping under load, delayed engagement, harsh shifts, overheating. The Trimatic may also develop a shudder on light-throttle upshifts.
Common Transmission

Clutch Hydraulic Failure

Clutch pedal goes to the floor, won't return, or feels spongy. Clutch won't disengage fully.
Common Engine, Holden Six (173ci / 202ci)

Worn Bearings and Low Oil Pressure

Oil pressure drops below 25 psi at idle when hot. Knocking from the bottom end under load.
Common Engine, Holden Six (173ci / 202ci)

Triple Carburettor Synchronisation (XU-1)

Rough idle, uneven running, flat spots, poor throttle response. The engine feels rough and unbalanced.
Minor Engine, Holden Six (173ci / 202ci)

Valve Stem Seal Deterioration

Blue smoke on startup that clears within a minute. May also smoke briefly on deceleration.
Critical Engine, Holden V8 (253ci / 308ci)

Overheating in the Compact Engine Bay

Temperature gauge climbs in traffic or under sustained load. May push coolant out the overflow. Engine pings (detonation) under acceleration.
View all 19 Torana (LJ-LX) / GTR / SLR / A9X problems