Price
26.04€intake manifold ø 21 for phbg 21 carburettors
Code: 0211199bDescription
INTAKE MANIFOLDS
Intake manifold conveys the air-fuel mixture to the engine by means of reed valve.
The total efficiency of an engine is calculated as the product of
various partial efficiencies, such as:
- volumetric efficiency
- thermodynamic efficiency
- mechanical efficiency
One of the main factors affecting volumetric efficiency is loss due to
friction that the fluid encounters (air-fuel mix) when feeding from the air
filter to the combustion chamber. Therefore, one of the components that
greatly influences this loss is the intake manifold, since all of the mix
has to travel through it with the minimum possible loss. For this
reason, sudden increases in section and corners along the mix path must
absolutely be avoided.
The intake manifold also acts as an accumulation tank for the fresh load,
since the mix, travelling at a certain speed, requires time to stop when
the reed valve closes. Therefore, mix collects in the manifold and exerts
pressure against the reeds. For this reason, each manifold has a
well-defined range of revolutions within which it provided maximum
efficiency (tuned manifold).
In addition, the manifold supports the carburettor by connecting it to
the engine casing or to the cylinder, damping vibrations between
casing and carburettor and preventing emulsion of gas and air in the
carburettor tank.
This apparently simple component therefore requires a great deal of
study in order to take full advantage of all of its qualities.
Malossi engineers have achieved this to perfection. Malossi, with decades
of experience in engine fuelling systems, has created a new line of
manifolds in rubber and aluminium alloy for the new generation of
scooters, and has tested and developed the line on roads and race tracks.
Malossi rubber manifolds feature a composite structure. Their construction
begins with an aluminium insert that is encased in a special plastic
material that is impervious to oils and fuels, guaranteeing increased
rigidity at the point of attachment to the casing and greater flexibility
of the manifold body.
Products reserved exclusively for racing in specifically designed locations according to the provisions of the competent sporting authorities. We disclaim all liability for improper use
Applies to
| Product name | Code | Price | |
|---|---|---|---|
| carburettor kit phbg 21 as for honda mb 5 - mt 5 - mtx 5 50cc | 1610703 | 201.87€ | Cart |
| carburettor kit phbg 21 as for aprilia rs (minarelli am 3 - 4 - 5 - 6) 2t lc 50 cc | 1611200 | 164.44€ | Cart |