Description
For VW/AUDI 1.8 20V engines
Nominal bore diameter: 81,5mm (increase engine displacement to 1802cc)
Recommended bore to piston to bore clearance: 0.08mm (For nitrous or extreme applications, consult your builder)
Piston ring grooves: 1.5 mm / 1.5 mm / 2.0mm
Compression height: 32.70mm.
Dish volume: 7cc
Compression ratio: 8.5:1
Pin offset: 1.10mm.
Material: Forged aluminum 4032 T6.
Average piston weight (unit, without pin): 325,7g (11.4 oz).
Rated for 1000hp.
Innovative high performance piston skirt design that provides:
1. Smaller piston to bore clearance
2. Less noise
3. Better ring seal
4. Higher power
5. Durability
Features:
Anti detonation grooves: protect the top ring by disrupting detonation waves and reduce piston-cylinder contact in high temperatures and engine RPM conditions.
Accumulator groove: accumulates residual combustion gasses reducing top ring flutter and improving seal.
Pin oil lubrication by broaches and oiler to reduce friction and increase durability.
Super A Piston Pin (63.45mm) 4pcs set
For VW 827 engines (Super A pistons)
Dimensions: 63.45mm x 20mm (length x O.D.)
Average unit weight: 116g (4.09 oz)
Rated for 1.000hp
Made from special steel alloys that combines optimal mass with high resistance.
PistonRings 81,5mm SPA DLC series
Specifications:
1 ring 1.5mm Made from carbon steel, which is 35% stronger than cast iron and about 30% lighter. DLC treated, which is the application of carbon particles, that provides higher resistance and lower friction.
2 ring 1.5mm Made from cast iron.
3 ring 2.0mm Made by 3 parts, providing easy handling, better oil film stability and improvement in oil removal by the lubrication holes due to its optimized design.
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