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Crankshaft Standard (STD). Porsche 911 3.2 Carrera / 911 turbo / 964 turbo 3.3ltr ❭ 93010201409
.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
The product you are viewing cross references to these numbers
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
The product you are viewing cross references to these numbers
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