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VW9300T4P
Product Information
Product Information
Dished Piston Set, 93x66mm.
Restore dependable engine performance with this OE Match Dished Piston Set, 93 x 66mm. Produced to OE-style specifications, this precision-engineered piston set is designed for compatible classic Porsche applications using the same engine platform where applicable. Manufactured from premium high-strength aluminium alloy, these dished pistons offer excellent durability, precise dimensional accuracy, and efficient heat dissipation for reliable long-term operation. The dished piston crown is engineered to provide the correct combustion chamber characteristics and compression ratio for compatible engine configurations, making this set ideal for standard engine rebuilds, maintenance, and restoration projects.

Fits:
  • Porsche 914 (1970-1976) (Type 4)

Engine size: 1800cc
Stroke: For 66mm stroke crankshafts
Pistons: Hypereutectic aluminium alloy
Compression Height: 42mm
Dish cc: 10cc

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings

The piston set converts combustion pressure into mechanical force by transferring energy through the connecting rods to the crankshaft. The dished piston design helps achieve the intended compression ratio while promoting smooth, efficient combustion and reducing the likelihood of detonation in compatible engine applications. Over time, pistons can become worn or damaged through heat, friction, lubrication failure, or prolonged engine use, leading to reduced compression, increased oil consumption, piston noise, and declining engine performance. Replacing worn pistons restores engine efficiency, reliability, and smooth operation.  

What This Product Does:
  • Converts combustion pressure into crankshaft rotation.
  • Maintains the correct combustion chamber characteristics.
  • Restores engine compression and combustion efficiency.
  • Supports smooth piston movement within the cylinders.
  • Provides reliable sealing when used with new piston rings.
  • Improves engine performance and reduces oil consumption.
  • Replaces worn, damaged, or heat-affected pistons.
  • Provides an OE-style fit for straightforward engine rebuilding.

Symptoms Of Wear Or Failure:

  • Low engine compression.
  • Excessive oil consumption.
  • Blue exhaust smoke caused by oil burning.
  • Piston slap or knocking noises.
  • Loss of engine power or acceleration.
  • Damaged piston crowns or cracked ring lands.
  • Excessive cylinder blow-by.
  • Damage identified during engine overhaul.

Why Replacement Matters:
  • The pistons are among the most highly stressed components within the engine, converting combustion energy into mechanical power while maintaining compression and efficient combustion. The dished piston design is critical to achieving the correct compression ratio and combustion characteristics for the intended engine specification. Worn or damaged pistons can reduce engine performance, increase oil consumption, create excessive blow-by, and accelerate wear throughout the engine.
  • Replacing worn pistons with this OE Match Dished Piston Set restores engine compression, improves combustion efficiency, reduces oil consumption, and supports dependable engine performance. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Dished Piston Set, 93 x 66mm provides reliable fit, performance, and durability for classic Porsche engine maintenance, repairs, and restoration projects.