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Porsche > 356 (1950-1965) > Engine Rebuild Parts > Engine Cylinders / Liners / Pistons > Wössner Pistons >

Wössner high compression forged piston kit. Porsche 911 S 2.2 12v 1969-70 (180PS)  ❭  K9103

Wössner high compression forged piston kit. Porsche 911 S 2.2 12v 1969-70 (180PS) - K9103
3
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K9103
Product Information
Product Information
Wössner high compression forged piston kit.

wossner

Fits:
Porsche 911 S 2.2 12v 1969-70 (180PS)

Suitable to use with Nikasil liners.

Specification
Technical information is sourced from Wössner's latest catalogue:

Part Number: K9103
Engine Type: 911.02
OE Bore Size: 84.00mm

Bore Sizes Available:
- 84.00mm - 2194.54cc, Compression Ratio: 10.5:1
- 84.50mm - 2220.74cc, Compression Ratio: 10.61:1
- 85.00mm - 2247.10cc, Compression Ratio: 10.73:1

Bore Size 84.00mm
Piston Size: 83.94mm – 83.94mm
Over Size: 0mm
Displacement CC: 2340cc
Dome / Bowl Volume: 29.4cc
Wössner Comp Ratio: 10.5:1
Ring Part Number: 840XSY

Bore Size 84.50mm
Piston Size: 84.44mm – K9103D050
Over Size: 0.5mm
Displacement CC: 2368cc
Dome / Bowl Volume: 29.4cc
Wössner Comp Ratio: 10.61:1
Ring Part Number: 845XSY

Bore Size 85.00mm
Piston Size: 84.94mm – K9103D100
Over Size: 1mm
Displacement CC: 2396cc
Dome / Bowl Volume: 29.4cc
Wössner Comp Ratio: 10.73:1
Ring Part Number: 850XSY

Standard
Stroke: 66mm
Dome/Bowl Volume: +29.4cc
OE Comp. Ratio: 9.8:1
Comp. Height: 34mm
Valves Per Cylinder: 2
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.
Related products
Wössner forged piston kit. Porsche 356 B / 912 / 356 SC Super 90 1960-1969 (90 PS) - K9015
4
Wössner forged piston kit. Porsche 356 B / 912 / 356 SC Super 90 1960-1969 (90 PS)
K9015
Product Information
Product Information
Wössner forged piston kit.

wossner

Fits:
Porsche 356 B / 912 / 356 SC Super 90 1960-1969 (90 PS).

Suitable to use with Nikasil liners.

Specification
Technical information is sourced from Wössner's latest catalogue:

Part Number: K9015
Engine Type: 616.16 / 616.36
OE Bore Size: 82.50mm

Bore Sizes Available:
- 82.50mm -1582.30cc, Compression Ratio: 9.5:1
- 83.00mm -1601.54cc, Compression Ratio: 9.6:1
- 83.50mm -1620.89cc, Compression Ratio: 9.71:1

Bore Size 82.50mm
Piston Size: 82.43mm – K9015DA
Over Size: 0mm
Displacement CC: 1582cc
Dome / Bowl Volume: 19.33cc
Wössner Comp Ratio: 9.5:1
Ring Part Number: 825XSY

Bore Size 83.00mm
Piston Size: 82.93mm – K9015D050
Over Size: 0.5mm
Displacement CC: 1620cc
Dome / Bowl Volume: 19.33cc
Wössner Comp Ratio: 9.6:1
Ring Part Number: 830XSY

Bore Size 83.50mm
Piston Size: 83.43mm – K9015D100
Over Size: 1mm
Displacement CC: 1620cc
Dome / Bowl Volume: 19.33cc
Wössner Comp Ratio: 9.71:1
Ring Part Number: 835XSY

Standard
Stroke: 74mm
OE Comp. Ratio: 9.3:1
Comp. Height: 27mm
Valves Per Cylinder: 2
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.