Malossi Manifold D 25x31 inclined for Minarelli vertical

The Malossi Ø 25x31 inclined intake manifold is an essential component for the proper functioning of the engine. This intake manifold allows the entry of the air-fuel mixture into the combustion chamber through the reed valve.

The overall performance of the engine depends on various factors, including volumetric, thermodynamic, and mechanical efficiency. Volumetric efficiency represents the ratio between the amount of mixture entering the combustion chamber and the engine displacement.

The intake manifold plays a fundamental role in volumetric efficiency, as it must allow the passage of the mixture with minimal friction. It is important to avoid abrupt changes in section and sharp edges along the path of the mixture.

In addition, the intake manifold acts as a reservoir for the fresh charge, allowing the mixture to accumulate when the reed valve closes. Each manifold has a specific range of engine speeds in which it offers maximum efficiency.

The manifold also serves to connect the carburetor to the engine crankcase or cylinder, reducing vibrations and preventing the emulsion of fuel and air in the carburetor float bowl.

With its years of experience in the industry, Malossi has developed a new line of rubber and aluminum alloy manifolds for the latest generation scooters. These manifolds have been tested and developed by the Malossi experience department, both on the road and on race circuits.

Malossi rubber manifolds feature a composite structure, with an aluminum insert embedded in a plastic material resistant to oils and fuels. This ensures a rigid attachment base to the crankcase and good elasticity of the manifold body.