Malossi cylinder 112cc, 6 ports, Ø 57.5 in cast iron for ape 50 - Vespa PK - PK HP - PK XL - Special 50 cc

Description

Stroke 43 mm; Displacement 111,66; Compression ratio 12,5: 1; Segments No. 2 rectangular section 1,5 mm; No. of decanting 6; Hemispherical head; Central candle; 21% aluminum alloy piston.

Cylinder

Material: special self-lubricating, wear-resistant cast iron alloys with a very high degree of refinement, obtained by gravity casting with Shell Molding process.
Processing: on high precision numerical control machine tools.
Heat exchange surfaces recalculated and increased.
Exhaust and transfer ports designed and tuned for maximum thermodynamic performance.
Dimensional checks of shape and roughness according to standards Malossi.
Cylinder piston coupling at 100% in selections of 0,010-0,005 mm.
Control of hydraulic seals carried out at 100%.

Piston

Material: special aluminum alloy with high silicon content and low thermal expansion.
Processing: on numerical control machines.
Lightened and reinforced.
Increased heat exchange surfaces.

Segments

Segments in spheroidal cast iron with high mechanical resistance, with rectified and polished lapped wear-resistant hard chrome on the contact surface.

Head

Material: special die-cast aluminum alloy.
Geometry of the heat exchange surfaces recalculated and increased.
Machining on super-precise CNC machines with diamond tools.
Antioxidant surface treatment.
Hemispherical blast chamber with squish and candle in the center.

THESE COMPONENTS ARE INTENDED FOR COMPETITIVE-SPORTS USE ONLY