Malossi Manifold D 30 straight rubber for PHBL 29/30 carburetors

The Malossi Ø 30 straight rubber intake manifold is designed for PHBL 29-30 carburetors. This component plays a fundamental role in the engine's fuel system, acting as an access corridor for the air-fuel mixture. 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's displacement. One of the main influences on this efficiency is the friction encountered by the fluid during its path from the air filter to the combustion chamber. The intake manifold plays a crucial role in minimizing this loss by avoiding abrupt changes in section and sharp edges along the mixture's path.

In addition, the manifold acts as an accumulation lung for the fresh charge, allowing the mixture to accumulate and compress against the reeds when the reed valve closes. Each manifold has a specific range of engine speeds at which it offers maximum efficiency.

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

With its extensive experience in the field of engine fuel systems, Malossi has developed a new line of rubber and aluminum alloy manifolds for the latest generation of scooters. These manifolds have been tested and developed by Malossi's experience department, both on the road and on the track.

Malossi rubber manifolds feature a composite structure, with an aluminum insert incorporated into a plastic material resistant to oils and fuels. This ensures a rigid attachment base to the crankcase and good elasticity of the manifold body. Thanks to this careful technical approach, Malossi manifolds offer optimal and long-lasting performance.