Malossi Manifold D 30 inclined center distance 56 for PHBH - VHB elastic connection

The Malossi inclined intake manifold Ø 30 with a center distance of 56 for PHBH - VHB carburetors with elastic attachment is an essential component for the engine's fuel system. This intake manifold serves as an access corridor for the air-fuel mixture into the engine through the reed valve.

The overall performance of an 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's displacement. Friction loss during the mixture's path from the air filter to the combustion chamber significantly affects volumetric efficiency. Therefore, it is crucial for the intake manifold to allow the passage of the mixture with minimal loss, avoiding sudden increases in section and sharp edges along the path.

In addition, the intake manifold also acts as a reservoir for the fresh charge, allowing the mixture to accumulate and compress against the reeds when the reed valve closes. Each manifold has a specific RPM range in which it achieves maximum efficiency.

The intake manifold connects the carburetor to the engine crankcase or cylinder and can also dampen vibrations transmitted from the crankcase to the carburetor, preventing fuel and air emulsion in the carburetor's float bowl.

Malossi, with its extensive experience in the field of engine fuel systems, has developed a new line of rubber and aluminum alloy manifolds for the latest generation scooters. These manifolds have been tested and developed by Malossi's research department both on the road and on racing circuits. Malossi's rubber manifolds feature a composite structure, with an aluminum insert embedded in a plastic material resistant to oils and fuels. This construction ensures a rigid attachment to the crankcase and good elasticity of the manifold body.