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Wössner forged piston kit. Porsche 987 Cayman S 3.4L 24V ❭ K9471D
- Porsche Cayman S 3.4L 987C 2005-08
Fits:
Porsche 987 Cayman 3.4ltr - 2006 to 2008
Please note, pistons not suitable for Alusil or Lokasil coated bores.
This kit is fine for Nikasil liners
Specification
Technical information is sourced from Wössner's latest catalogue:
Part Number: K9741
Engine Type: M97.21
OE Bore Size: 96.00mm
Bore Sizes Available:
- 96.00mm - 3387.49cc, Compression Ratio: 11.3:1
- 96.50mm - 3422.87cc, Compression Ratio: 11.4:1
- 97.00mm - 3458.43cc, Compression Ratio: 11.3:1
Bore Size 96.00mm
Piston Size: 95.93mm
Over Size: 0mm
Displacement CC: 3387cc
Dome / Bowl Volume: -10cc
Wössner Comp Ratio: 11.1:1
Ring Part Number: 960XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 96.50mm
Piston Size: 96.43mm
Over Size: 0.5mm
Displacement CC: 3422cc
Dome / Bowl Volume: -10cc
Wössner Comp Ratio: 11.2:1
Ring Part Number: 965XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 97.00mm
Piston Size: 96.93mm
Over Size: 1mm
Displacement CC: 3458cc
Dome / Bowl Volume: -10ccmm
Wössner Comp Ratio:
Ring Part Number: 970XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Standard
Stroke: 78mm
OE Comp. Ratio: 11:1
Comp. Height: 32.3mm
Valves Per Cylinder: 4
Cylinders: 6
Please CLICK HERE for Technical release – Piston / Con rod orientation.
Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.Price shown is for complete engine set.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed