RACING NBR NAGNJENO SESALNO KOLENO Ø 22-28 L.29 (YAMA.-MBK-MINARELLI horizontal 2T 50)

64,05 € 58,93 € 48,30 €
DOBAVLJIVO
SKU
028857B
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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.

 

ATTENTION: in order to use the MHR manifolds it is necessary to perform some small modifications to the adjacent plastic.

 

Piaggio - Gilera 2T 50 engines

APRILIA - DERBI - GILERA - ITALJET - PIAGGIO

Material

INTER-AXIS mm

Ø hole

Ø manifolds

Ø inlet

total length

carburettors applications

Note

02 8732B NBR 52 6,5 21 24,5 26,5

PHBG 15-21

Not suitable for original air box filter
02 8856B NBR 52 6,5 22 28 26,5

PHBG 15-21 Racing (linkage 28)

PHVB 22 PHBL 22-25

Not suitable for original air box filter
02 9441B viton 52 6,5 22 28 26,5

PHBG 15-21 Racing (linkage 28)

PHVB 22 PHBL 22-25

Not suitable for original air box filter
02 9732B viton 52 6,5 21 24,5 26,5

PHBG 15-21

Not suitable for original air box filter

 

 

Yamaha - MBK - Minarelli horizontal 2T 50 engines

APRILIA - BENELLI - BETA - CPI - EXPLORER

HUPPER -ITALJET - MALAGUTI - MBK - YAMAHA

Material

Ø hole

Ø manifolds

Ø inlet

total length

carburettors applications

Note

02 8857B NBR 6,7 22 28 29

PHBG 15-21 Racing (linkage 28)

PHVB 22 PHBL 22-25

Not suitable for original air box filter
0213222B

NBR

6,7 22 24,5 29

PHBG 15-21 Racing

Not suitable for original air box filter
0213661B viton 6,7 22 24,5 29

PHBG 15-21 Racing

Not suitable for original air box filter
0213662B viton 6,7 22 28 29

PHBG 15-21 Racing (linkage 28)

PHVB 22 PHBL 22-25

Not suitable for original air box filter

 

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

Proizvajalec Model
AEON MOTORAEON MOTOR COBRA 50 2T (AT70)
APRILIAAPRILIA SR 50 2T 1994->
APRILIAAPRILIA AREA 51 50 2T LC
APRILIAAPRILIA GULLIVER 50 2T LC
APRILIAAPRILIA GULLIVER 50 2T
APRILIAAPRILIA RALLY 50 2T (MINARELLI)
APRILIAAPRILIA SR NETSCAPER 50 2T LC (MINARELLI)
APRILIAAPRILIA RALLY 50 2T LC (MINARELLI)
APRILIAAPRILIA SCARABEO 50 2T (MINARELLI)
APRILIAAPRILIA SR RACING 50 2T LC (MINARELLI)
APRILIAAPRILIA SONIC 50 2T
APRILIAAPRILIA SONIC 50 2T LC
APRILIAAPRILIA SR REPLICA 50 2T LC <-1999
APRILIAAPRILIA SR STEALTH 50 2T LC (MINARELLI)
APRILIAAPRILIA SR WWW 50 2T
ATALAATALA CAROSELLO 50 2T
BENELLIBENELLI 491 SPORT 50 2T LC (MINARELLI)
BETABETA ARK 50 2T
BETABETA ARK 50 2T LC
BETABETA CHRONO 50 2T
BETABETA EIKON 50 2T LC
BENELLIBENELLI 491 GT 50 2T (MINARELLI)
BENELLIBENELLI K2 50 2T
BENELLIBENELLI K2 50 2T LC
BENELLIBENELLI NAKED 50 2T
BENELLIBENELLI PEPE 50 2T
BENELLIBENELLI PEPE LX 50 2T euro 2 (QJ1E40QMB-4)
BETABETA QUADRA 50 2T
BENELLIBENELLI QuattronoveX 50 2T euro 2
BETABETA TEMPO 50 2T
CPICPI ARAGON GP 50 2T
CPICPI HUSSAR 50 2T <-2002 (50 C)
CPICPI HUSSAR 50 2T 2003->
CPICPI OLIVER 50 2T <-2002 (50 C)
CPICPI OLIVER 50 2T 2003->
CPICPI POPCORN 50 2T <-2002 (50 C)
CPICPI POPCORN 50 2T 2003->
EXPLOREREXPLORER CRACKER 50 2T 2003-> (GE 1E 400 MB)
GARELLIGARELLI GSP 50 2T LC euro 2 (1PE40MB)
HUPPERHUPPER MONTECARLO 30 50 2T (1E40QMB)
ITALJETITALJET DRAGSTER 50 2T LC
MALAGUTIMALAGUTI F10 50 2T
MALAGUTIMALAGUTI F10 WAP 50 2T euro 2 (QJ*CMA03C*)
MALAGUTIMALAGUTI F12-PHANTOM 50 2T
MALAGUTIMALAGUTI CENTRO 50 2T
MALAGUTIMALAGUTI CIAK 50 2T
MALAGUTIMALAGUTI F15 FIREFOX 50 2T LC
MALAGUTIMALAGUTI F12 DIGIT KAT-PHANTOM 50 2T LC
MALAGUTIMALAGUTI F12 DIGIT KAT-PHANTOM 50 2T LC euro 2
MALAGUTIMALAGUTI F12-PHANTOM 50 2T LC
MALAGUTIMALAGUTI F12 R ARIA 50 2T euro 2 (QJ*CMA02C*)
MALAGUTIMALAGUTI F12 R LC 50 2T LC euro 2
MALAGUTIMALAGUTI YESTERDAY 50 2T
MBKMBK EVOLIS 50 2T
MBKMBK FIZZ 50 2T
MBKMBK FLIPPER 50 2T
MBKMBK FORTE 50 2T
MBKMBK HOT CHAMP 50 2T
MBKMBK MACH G 50 2T
MBKMBK MACH G 50 2T LC
MBKMBK NITRO 50 2T LC
MBKMBK OVETTO 50 2T
MBKMBK SORRISO 50 2T 1996->
YAMAHAYAMAHA AEROX 50 2T LC euro 0-1
YAMAHAYAMAHA AEROX 50 2T LC euro 2
YAMAHAYAMAHA AXIS 50 2T
YAMAHAYAMAHA BREEZE 50 2T
YAMAHAYAMAHA JOG ER 50 2T
YAMAHAYAMAHA JOG 50 2T
YAMAHAYAMAHA JOG R 50 2T
YAMAHAYAMAHA JOGRR 50 2T LC euro 2
YAMAHAYAMAHA JOG Z 50 2T
YAMAHAYAMAHA NEO'S 50 2T
YAMAHAYAMAHA VINO 50 2T
YAMAHAYAMAHA WHY 50 2T
YAMAHAYAMAHA ZEST 50 2T