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NBR TILTED INT.MANIF. Ø 21-27 L.19 (YAMA.-MBK-MINARELLI vertical 2T 50)

02 8479B

$61.09

 

The product is AVAILABLE

Description

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

Volumetric efficiency is the ratio between the quantity of fuel that can enter the combustion chamber and the displacement of the engine.

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.

 

 

Derbi - Minarelli engines

APRILIA - HONDA - PIAGGIO

Material

 INTER-AXIS mm

Ø hole

Ø manifolds

Ø inlet

total lenght

carburettor applications

Note

02 6639B

NBR

61x40

6,5

 30

 35

 27

PHBH 26-30

VHST 26-30 

Not suitable for original air box filter

 

Piaggio - Gilera 2T 50 engines

APRILIA - DERBI - GILERA - ITALJET - PIAGGIO

Material

 INTER-AXIS mm

Ø hole

Ø manifolds

Ø inlet

total lenght

carburettor applications

Note

02 7528B

NBR

52 6,5 26 30 31,5

PHBL

Not suitable for original air box filter

02 8480B

NBR

52 6,5 22 28 26

PHVB 22

For original air box filter

02 5733B

NBR

52 6,5 20,5 23 26

ORIGINALS

PHVA 12-17,5 PHBG 15-21

Original spare Ø 20: for original air box filter

 

Yamaha - MBK - Minarelli horizontal 2T 100 engines

APRILIA - BENELLI - ITALJET - MBK - YAMAHA

Material

Ø hole

Ø manifolds

Ø inlet

total lenght

carburettor applications

Note

02 8399B

NBR

6,7 22 28 24,5

PHVB 22

For original air box filter

02 8481B

NBR

6,7 21 23 24

ORIGINALS

PHVA 12-17,5 PHBG 15-21

Original spare Ø 20: for original air box filter

 

Yamaha - MBK - Minarelli vertical 2T 50 engines

APRILIA - ITALJET - MBK - YAMAHA

Material

INTER-AXIS mm

Ø hole

Ø manifolds

Ø inlet

total lenght

carburettor applications

Note

02 8400B

NBR

58x35 6,5 20,5 23 19

ORIGINALS

PHVA 12-17,5 PHBG 15-21

Original spare Ø 20: for original air box filter

02 8479B

NBR

58x35 6,5 21 27 19

PHVB 22

Not suitable for original air box filter

 

 

 

Produits réservés exclusivement à la compétition dans les lieux réservés pour et suivant les dispositions des autorités sportives compétentes. Nous déclinons toutes responsabilités en cas d'utilisation inadéquate.

Makes and Models

NBR TILTED INT.MANIF. Ø 21-27 L.19 (YAMA.-MBK-MINARELLI vertical 2T 50)

Make Model
APRILIA APRILIA AMICO 50 2T
Not suitable for original air box filter
APRILIA APRILIA SR 50 2T <-1993
Not suitable for original air box filter
ITALJET ITALJET BAZOOKA 50 2T
Not suitable for original air box filter
ITALJET ITALJET PISTA 2 50 2T
Not suitable for original air box filter
ITALJET ITALJET REPORTER 50
Not suitable for original air box filter
ITALJET ITALJET SCOOP 50 2T
Not suitable for original air box filter
ITALJET ITALJET YANKEE 50 2T
Not suitable for original air box filter
MBK MBK BOOSTER 50 2T euro 0-1
Not suitable for original air box filter
MBK MBK BOOSTER 50 2T euro 2 (A137E)
Not suitable for original air box filter
MBK MBK BOOSTER SPIRIT 50 2T euro 0-1
Not suitable for original air box filter
MBK MBK BOOSTER NAKED 50 2T euro 2 (A137E)
Not suitable for original air box filter
MBK MBK BOOSTER NG 50 2T euro 0-1
Not suitable for original air box filter
MBK MBK BOOSTER NG 50 2T euro 2 (A137E)
Not suitable for original air box filter
MBK MBK BOOSTER ROCKET 50 2T euro 0-1
Not suitable for original air box filter
MBK MBK BOOSTER ROCKET 50 2T euro 2 (A137E)
Not suitable for original air box filter
MBK MBK SORRISO 50 2T <-1995
Not suitable for original air box filter
MBK MBK STUNT 50 2T euro 0-1
Not suitable for original air box filter
MBK MBK STUNT 50 2T euro 2
Not suitable for original air box filter
MBK MBK TARGET 50 2T
Not suitable for original air box filter
YAMAHA YAMAHA BW'S 50 2T euro 0-1
Not suitable for original air box filter
YAMAHA YAMAHA BW'S 50 2T euro 2 (A137E)
Not suitable for original air box filter
YAMAHA YAMAHA BW'S Original/Naked 50 2T euro 2 2010-> (A137E)
Not suitable for original air box filter
YAMAHA YAMAHA BW'S NG 50 2T euro 0-1
Not suitable for original air box filter
YAMAHA YAMAHA BW'S NG 50 2T euro 2 (A137E)
Not suitable for original air box filter
YAMAHA YAMAHA CRZ 50 2T
Not suitable for original air box filter
YAMAHA YAMAHA CT 50 2T
Not suitable for original air box filter
YAMAHA YAMAHA SLIDER 50 2T
Not suitable for original air box filter
YAMAHA YAMAHA SPY 50 2T
Not suitable for original air box filter
YAMAHA YAMAHA ZUMA 50 2T
Not suitable for original air box filter