Camshaft, TURBO. Porsche 930 Turbo 3.0L / 3.3L / 964 Turbo 3.3L 1975-92 › 93010514

Porsche camshaft Left, for the 930 Turbo and 964 Turbo. PART 1 of 3 - camshaft.

Fits

Porsche 911 & 912 (1975–1993) TURBO

Diagram ref no 42

Confirm the vehicle's model, production year and engine before ordering; use its VIN to establish the correct camshaft specification.

What This Product Does

Cam lobes determine valve lift and the duration of opening. Driven through the engine's timing mechanism, this shaft operates the left-bank valves in the required relationship to crankshaft rotation.

Functions

• Actuates left-bank valve gear.
• Determines valve-opening duration and lift.
• Coordinates valve events with crankshaft rotation through the timing drive.
  
  Technical Details
  
  
• Assembly row labels include PART 1 of 3 - camshaft, camshaft and PART 1 of 3 - camshaft with air injection.
• Quantity 1; this is an assembly requirement, not confirmation of kit contents.
• This fits TURBO cars.
  
  Symptoms of Fault

• Unusual ticking or tapping around the valve gear.
• Uneven idle or misfiring that remains after fuel and ignition diagnosis.
• Scored, pitted or otherwise damaged lobe surfaces.
• Abnormal rocker wear or metal particles discovered in engine oil.

These findings require diagnosis; they do not establish camshaft failure by themselves.

Why Replacement Matters

Confirmed lobe damage can alter valve movement and justify renewal during top-end repair or overhaul. Establish the cause of wear before assembly, including oil supply and contamination. Inspect the associated chains, sprockets, guides, adjusters, rockers and fixings rather than assuming that replacing the shaft alone resolves the fault.

FAQs

Should rockers be checked during replacement?
Inspect their contact surfaces for wear and determine whether renewal is necessary before fitting.

Who should carry out installation?
An experienced Porsche engine technician should establish timing, check clearances and follow the applicable assembly procedure.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

93010514

The product you are viewing cross references to these numbers