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918 Spyder 2014-2015
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Wössner Pistons
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Wössner forged piston kit. Porsche 944S 2.5Ltr ❭ K9531
Wössner forged piston kit. Porsche 944S 2.5Ltr - K9531
K9531
Vehicle Group
- Porsche 944S 2.5L 16V 1987-88
Information
Wössner forged piston kit.
Fits:
Porsche 944S 2.5Ltr
Please note, pistons not suitable for Alusil or Lokasil coated bores
Suitable to use with Nikasil liners.
Specification
Technical information is sourced from Wössner's latest catalogue:
Part Number: K9531
Engine Type: - M44.40
OE Bore Size: 100.00mm
Bore Sizes Available:
- 100.00mm - 2478.71cc, Compression Ratio: 11.4:1
- 100.50mm - 2528cc, Compression Ratio: 11.4:1
- 101.00mm - 2503cc, Compression Ratio: 11.4:1
Bore Size 100.00mm
Piston Size: 99.92mm
Over Size: 0mm
Displacement CC: 2478cc
Dome / Bowl Volume: -10cc
Wossner Comp Ratio: 11.4:1
Ring Part Number: 1000XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 100.50mm
Piston Size: 100.42mm
Over Size: 0.5mm
Displacement CC: 2528cc
Dome / Bowl Volume: -10cc
Wossner Comp Ratio: 11.4:1
Ring Part Number: 1005XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 101.00mm
Piston Size: 100.92mm
Over Size: 1mm
Displacement CC: 2503cc
Dome / Bowl Volume: -10cc
Wossner Comp Ratio: 11.4:1
Ring Part Number: 1010XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Standard
Stroke: 78.9mm
Dome/Bowl Volume: -
OE Comp. Ratio: 10.2:1
Comp. Height: 40.6mm
Valves Per Cylinder: 4
Cylinders: 4
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.
Fits:
Porsche 944S 2.5Ltr
Please note, pistons not suitable for Alusil or Lokasil coated bores
Suitable to use with Nikasil liners.
Specification
Technical information is sourced from Wössner's latest catalogue:
Part Number: K9531
Engine Type: - M44.40
OE Bore Size: 100.00mm
Bore Sizes Available:
- 100.00mm - 2478.71cc, Compression Ratio: 11.4:1
- 100.50mm - 2528cc, Compression Ratio: 11.4:1
- 101.00mm - 2503cc, Compression Ratio: 11.4:1
Bore Size 100.00mm
Piston Size: 99.92mm
Over Size: 0mm
Displacement CC: 2478cc
Dome / Bowl Volume: -10cc
Wossner Comp Ratio: 11.4:1
Ring Part Number: 1000XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 100.50mm
Piston Size: 100.42mm
Over Size: 0.5mm
Displacement CC: 2528cc
Dome / Bowl Volume: -10cc
Wossner Comp Ratio: 11.4:1
Ring Part Number: 1005XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Bore Size 101.00mm
Piston Size: 100.92mm
Over Size: 1mm
Displacement CC: 2503cc
Dome / Bowl Volume: -10cc
Wossner Comp Ratio: 11.4:1
Ring Part Number: 1010XPY
Please note, pistons not suitable for Alusil or Lokasil coated bores
Standard
Stroke: 78.9mm
Dome/Bowl Volume: -
OE Comp. Ratio: 10.2:1
Comp. Height: 40.6mm
Valves Per Cylinder: 4
Cylinders: 4
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.
K9531 Size Options:
Prices from: €828.20
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