Malossi Manifold D 20.5/23 length 19 inclined for Minarelli vertical

The Malossi Ø 20.5x23 inclined intake manifold is an essential component for Yamaha, MBK, and Minarelli vertical 2-stroke 50cc engines. This manifold serves as an access corridor for the air-fuel mixture into the engine through the reed valve.

The overall performance of the engine depends on various factors, including volumetric, thermodynamic, and mechanical efficiency. Volumetric efficiency indicates the amount of mixture that can be introduced into the combustion chamber relative to the engine's displacement.

The intake manifold plays a crucial role in volumetric efficiency as it must allow the fluid to pass through with minimal loss. Therefore, it is important to avoid abrupt increases in section and sharp edges along the mixture's path.

In addition, the intake manifold acts as a reservoir for the fresh charge, allowing the mixture to compress against the reeds when the reed valve closes. This component also supports the carburetor, connecting it to the engine crankcase or cylinder, and dampens vibrations transmitted from the crankcase to the carburetor.

With its years of experience in engine fuel systems, Malossi has developed a new line of rubber and aluminum alloy manifolds for the next generation of scooters. These manifolds have been tested and developed by Malossi's research and development department, both on the road and on race circuits.

In particular, Malossi's rubber manifolds feature a composite structure with an aluminum insert embedded in a plastic material resistant to oils and fuels. This ensures significant rigidity in the mounting base to the crankcase and good elasticity of the manifold body.

SPECIFICATIONS

• Material: NBR
• Center distance: 58x35 mm
• Holes: Ø 6.5
• Conduit: Ø 20.5
• Inlet: Ø 23
• Total length: 19
• Carburetor application: Original, PHVA 12-17.5, PHBG 15-21

COMPATIBILITY NOTES

The collector is compatible with the original air filter.