Malossi MHR aluminum thermal unit D 47,6 piston pin 12

The Malossi MHR Ø 47.6 thermal unit is a high-quality and high-performance product for competition enthusiasts. The cylinder is made of a special alloy of aluminum with a high percentage of silicon and titanium, which guarantees high resistance to high temperatures.

Thanks to the special heat treatment, the material maintains its mechanical and dimensional characteristics constant up to temperatures of 250°C. The machining operations are carried out with precision on numerically controlled machining centers, ensuring very tight dimensional and shape tolerances.

The internal surface of the cylinder is coated with silicon carbides on a nickel matrix, which give it a very high hardness and remarkable resistance to wear. The internal machining of the cylinder allows for a very high finish on the sliding walls, thanks to the use of special machines.

The exhaust and transfer diagrams have been specifically designed and made for competition, with a significant commitment from Malossi technicians. The piston is made of a special alloy with a high percentage of silicon, guaranteeing resistance to heat and resistance to temperature variations. The external tin coating minimizes the coefficient of friction.

The structure of the piston is reinforced to withstand the stresses imposed in competition, but at the same time it is lightweight to reduce inertia forces. The piston ring is made of spheroidal cast iron with a hard chrome coating on the outer surface. The segments are made of spheroidal cast iron with high mechanical resistance, with a hard chrome anti-wear coating.

The head of the thermal unit is made of a special alloy of aluminum with a high coefficient of heat exchange. The heat exchange surfaces have been recalculated and increased, and the combustion chamber has been completely redesigned for a high compression ratio and very high turbulence. The head machining is carried out on numerically controlled machines.

COMPATIBILITY NOTES

Product compatible only with the Malossi crankshaft art. 53 8009