.jpg?width=440&height=320 "Crankshaft Standard (STD). Porsche 911 3.2 Carrera / 911 turbo / 964 turbo 3.3ltr - 93010201409, 930102014CX - 930 102 014")
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
Crankshaft Standard (STD)
This standard size crankshaft (STD) is a
precision-engineered rotating assembly component used in several iconic Porsche
air-cooled engines.
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1984 -1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
Diagram ref no 1
Designed to maintain original journal dimensions and deliver exceptional strength, this crankshaft plays a crucial role in preserving the smoothness, reliability and performance expected from these high-value flat-six engines.
Whether performing a classic restoration, a bottom-end refresh or a full performance rebuild, this crankshaft is essential for ensuring correct bearing clearances, optimal lubrication and long-term engine integrity.
What the Engine Crankshaft Does
This crankshaft is responsible for key engine functions,
including:
- Converting
piston motion into rotational torque that drives the transmission
- Maintaining
accurate journal diameters to support proper bearing lubrication
- Providing
smooth, balanced rotation across the engine’s entire RPM range
- Distributing
oil internally through precision-machined lubrication galleries
- Supporting
turbocharged loads with a strong, durable crank web and journal design
- Forming the foundation of the bottom-end rotating assembly
A correct standard-size crankshaft is vital to the long-term reliability and performance of any air-cooled Porsche flat-six.
Why Crankshafts Can Fail
Even though Porsche engineered these crankshafts for
durability, decades of use and performance driving can lead to wear or damage.
Common causes of failure include:
- Oil
starvation resulting in journal scoring or bearing failure
- Metal
fatigue from high RPM use, boost pressure or detonation
- Contamination
in the oil supply causing abrasive wear
- Overheating
weakening the crankshaft’s molecular structure
- Incorrect
machining from past rebuilds creating imbalance or mismatched
tolerances
- Severe
knock events bending or cracking the crankshaft
- High-mileage wear reducing journal roundness and bearing clearances
Symptoms of crankshaft-related failure include low oil pressure, metallic knocking, vibration, bearing debris in oil, and uneven rotation during teardown.
Why You Should Replace a Damaged or Worn Crankshaft
Installing a new or precision-built standard size crankshaft—designed to match original Porsche performance tolerances—ensures a strong, balanced and reliable engine rebuild.
Key benefits include:
- Restored bearing clearances and stable oil pressure
- Smooth, balanced engine rotation at all RPM ranges
- Reduced vibration and improved power delivery
- Enhanced reliability under turbocharged loads
- Prevention of severe bottom-end failures
- Increased lifespan of pistons, rods and bearings
- Assurance of correct geometry for high-performance use
For high-value Porsche models like the 911 Carrera 3.2 and Turbo variants, a correct, high-quality STD crankshaft is one of the most critical investments in any rebuild.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010201409
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100 Plasigauge strips per box
PLASTIGAUGE PL-A is widely used in the measurement of clearance in plain automotive bearings. Measurement of clearance in big-end bearings can be achieved without dismantling the crankshaft.
For measurements of: 0.001″ to 0.007″ (0.025mm – 0.175mm)
Suitable for use at temperatures between 0°C and 35°C
Contents:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PLA007
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3G Mineral Grease: To coat journal prior to use of Plastigauge
3G Silicone Grease: To apply to surface of shell
Lubricants to assist with the measurement of clearance in automotive bearings.
Plastigauge Precision Clearance Gauges
Kit includes:
1 x Plastigauge PL-A box
1 x Plastiguage Mineral grease
1 x Plastiguage Silicone grease
PLASTIGAUGE PL-A is widely used in the measurement of clearance in plain automotive bearings. Measurement of clearance in big-end bearings can be achieved without dismantling the crankshaft.
3G Minerak Grease: To coat journal prior to use of Plastigauge
3G Silicone Grease: To apply to surface of shell
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Related, superseded, cross reference or alternative numbers for comparison.
PLASKIT
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This kit is comprised of the following items: