Wossner Grp.A Forged Piston Kit Mk1/Mk2 GTI 1.8L 8V


  • Ex Tax: £568.58

Available Options

Part No. 9028DA
Engine typ EV / PB / GU / PF
OE Bore size 81mm
Bore sizes available 81mm / 81.5mm / 82mm / 82.5mm / 83mm / 83.5mm
Engine CC 1780.87cc / 1802.93cc / 1802.93cc / 1847.44cc / 1869.90cc / 1892.50cc
Stroke 86
Wössner Comp. ratio 11.3:1 / 12.3:1
OE Comp. ratio 9.0:1 / 10.0:1
Compression ratios Pistons are the same, different cylinder head volumes produce different compression ratios.
Comp. height 32.2
Valve per Cylinder 2
Cylinders 4
Reccomended Piston to Bore clearance 0.08

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 Moly 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 mirror polished to better resist detonation on a high performance engine. Mirror 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.

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