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Porsche // 996 (911) (1997-2005) // 996 C4 3.6L 09/01-2005
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- Porsche 911 1978-1989 3.3L Turbo (930)
Forged from 2618 Aluminium Alloy
Fits:
Porsche 911 3.3L TURBO 12V (8.5:1)
Engine Size : 3.3
Bore Size: 98.00mm
Stroke: 74.40mm
Rod length: 127.00mm
Compression Distance : 32.80mm
Compression Ratio: 8.5
Dome volume: 22.8cc
Oversize: 1.00mm
Designed for Porsche Air-cooled 911 engines compatible with a Nickel Ceramic bore, these pistons are machined from forged 2618 alloy for greater strength. The valve pockets are machined to accommodate high lift cams, and accept the stock stroke and rod length. The ring grooves are precision CNC machined and all new applications include skirt coating and 3D undercrown milling. Piston clearances designed for aluminum cylinders, steel/iron cylinders may require additional clearance.
2618 Aluminium Alloy
Pistons manufactured from 2618 wrought aluminium alloy are designed for racing and very demanding applications. These environments necessitate the higher strength 2618 aluminium alloy. When exposed to heat, 2618 aluminium alloy expands 15% more than 4032 aluminium alloy therefore the initial piston to cylinder wall needs to be 15% greater. This difference is most noticeable during cold start. When running at operating temperature both 2618 and 4032 pistons have approximately the same clearances.
• Accumulator Grooves
• Skirt Coating
• 3D Lightweight Undercrown Milling
• Pin fitting and wire locks
• 9310 high carbon alloy or tool steel wrist pins
• Rings Included
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
353303
The product you are viewing cross references to these numbers