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ALUMIN-CYL. KIT Ø 36 MINI MOTO

At last Malossi brought his great experience reached on scooters into mini moto sector!

TECHNICAL FEATURES


CYLINDER
- Material: special aluminium alloy with high percentage of silicon and titanium that guarantees exceptional strain strength even at high temperatures.
- Heat treatment: special quenching and stabilizing treatment that gives the material increased toughness and strength, guaranteeing that mechanical and size specifi cations will remain unaltered for temperatures of up to 250 °C.
- Chip-forming machining: carried out on NC machining centres with extremely-limited size and shape tolerance (roundness, perpendicularity).
- Inner surface coating: effected using silicon carbide on a nickel matrix with heat treatment that guarantees extreme hardness (around 600 HVO, 1/5) and excellent resistance to wear.
- Internal machining of cylinder: using special machines that allow a degree of fi nish on the cylinder barrel walls whose roughness corresponds with the angles set at the design stage (grinding process using special stone).
- Port and exhaust diagrams: designed and manufactured especially for racing. The defi nition of the port and exhaust diagrams has requested considerable effort on the part of our engineers both on engine test stands and the circuits.

PISTON
- Material: special aluminium alloy with a very high percentage of silicon and titanium that guarantees both excellent heat resistance and strain strength upon temperature variation.
- External coating: graphite coating that guarantees a very low friction coefficient
- Structure: reinforced in order to offer resistance to the stress suffered by cylinder units used for top-level competition, but at the same time light enough to reduce inertial force.

PISTON RINGS
- Rings in very strong modular cast iron with ground, wear-resistant, hard chrome metal-spray coating on the contact surface.

HEAD
- Material: special alluminium alloy with a very high heat exchange coefficient.
- Geometry of heat exchange surfaces recalculated and increased.
- Combustion chamber completely-designed to obtain a high compression ratio with a very high turbolece.
- Machining: numerically controlled machines.


NB: These cylinder kits are expressly designed to be coupled exclusively with the Malossi special crankshafts.

 

POLINI MINI Moto

Engine

H2O

AIR

H2O

 H2O

Cylinder kit

31 8415

31 8476

3113555

3113555

Capacity

39,68

39,68

48,99

48,99

Bore

36

36

40

40

Crankshaft

5313808

5313808

5313808

5313430

Stroke

39

39

39

39,7

Connecting rod length

76

76

76

76

Pair axis

14

14

14

14

 


OEM Numbers (for the purpose of comparison)  31 8476 (MALOSSI)


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$173.24
Art.No.
M318476
1,144g / piece
Stock on hand   Amount

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