Matching 50cc / 70cc Cylinder Kit, Carburetor and Exhaust

Found this, thought it may be of some use to someone. Took me forever to copy as I could not paste HTML tables here

Source: http://www.tuningmatters.com/2012/0...at-exhaust-should-i-buy-to-match-my-cylinder/


How does it work?

Below you’ll find a list of tuning parts, each divided into profiles and categories (like cylinders, exhausts, etc.). The profiles help you to check which cylinders and exhausts match and what size carburetor is suited for those combinations. When you ride a cylinder that is found in Profile 2 you should stick with a carburetor and exhaust from the exact same category. Using a part from another category can perform worse and might even damage your engine (too small carburetor, e.g.).
Please note that we are talking about stock (unmodified) tuning cylinders. Porting (modifying) a cylinder from Profile 4, might improve its performance to a Profile 5 cylinder and therefore making it suitable for Profile 5 exhausts and carburetors.
Everything below should just be used as a guideline, therefore keep in mind that other combinations might work too.


Profile 1

Cylinders
Original 50cc
Polini 50cc cast iron
Malossi 50cc cast iron
Hebo 50cc cast iron
TopPerformances 50cc cast iron (Minarelli)
DR 50cc cast iron (Minarelli)

Exhausts
Original
Sito +
Giannelli Nardo / Shot
Giannelli Nr-X (Minarelli)
Giannelli Pro 6 / Pro Cee
Giannelli Reverse
Polini For Race
Polini Funky
Doppler
Yamashi S2
Yasuni Z
Yasuni R
Leo Vince Sprinter
Leo Vince ZX
Bidalot S2
Hebo Gara / 104
Tecnigas Next / R
Tecnigas Basic
Kundo Kinetic
Metra Kit / Metra Kit Series II
Arrow Basic
Arrow Performer
Samba
R-Force
Stage6 Pro Replica

Carburetors
Original (12mm / 14mm)
17.5mm Dell’Orto

Profile 2

Cylinders
Polini Evolution 50cc alu
Malossi MHR 50cc alu
Malossi MHR Team 50cc alu
Hebo Alu NG 50cc alu
Stage6 50cc alu

Exhausts
DPR (50cc spec)
Yasuni Carrera 20
Bidalot Carrera 20
Polini Evolution 50
Malossi MHR Team 50

Carburetors
17.5mm Dell’Orto
19mm Dell’Orto
21mm Dell’Orto
24mm Mikuni


Profile 3

Cylinders
Polini 70cc cast iron
Polini 70cc Corsa cast iron
Malossi Sport 70cc cast iron
Hebo 70cc cast iron
Airsal 70cc alu
TopPerformances Trophy 70cc cast iron
DR 70cc cast iron
Metra Kit 70cc cast iron
Stage6 Street Race 70cc
Stage6 Sport Pro 70cc

Exhausts
Polini For Race
Yasuni R
Giannelli Nardo / Shot
Hebo Gara / 104
Metra Kit Sport Production
Hebo 70cc Competition
Bidalot S2
Stage6 Pro
Tecnigas RS70
Laser X-pro

Carburetors
Original (12mm / 14mm)
17.5mm Dell’Orto
19mm Dell’Orto
21mm Dell’Orto


Profile 4

Cylinders
Malossi MHR Replica 70cc alu
Hebo Alu NG 70cc alu
Hebo Alu / Athena / Eurocilindro 70cc alu
Gilardoni 70cc alu
Polini Alu W 70cc alu (Piaggio)
TopPerformances Due Plus 70cc cast iron (Minarelli)
Athena (T-port) 70cc alu
Hebo (T-port, old type) 70cc alu
Metra Kit Sport Production 70cc alu
Airsal T6 70cc alu
Stage6 Racing 70cc (MKII)

Exhausts
Polini For Race
Polini Evo Cross
Polini Evo 5 / 6 / 7 / 8-serie
Giannelli Nardo / Shot
Yasuni R
Yasuni / Bidalot Carrera 16
Hebo Racing I
Jolly Moto
Jolly Moto SP
Arrow Limited Series
Stage6 R1200
TJT Racing (Piaggio)
Tecnigas RS70

Carburetors
17.5mm Dell’Orto
19mm Dell’Orto
21mm Dell’Orto
24mm Mikuni / TopPerformances


Profile 5

Cylinders
Metra Kit Pro Race
Metra Kit Pro Race 2
Malossi MHR 70cc
Malossi MHR Team 70cc
Malossi MHR Team 7T 70cc
Malossi MHR Team 7T – Factory Tuned 70cc
Malossi MHR Speed Replica 70cc (Piaggio)
Malossi MHR Cross 70cc
Polini Evolution 70cc
Polini Evolution 2 70cc
Polini Evolution 3 70cc
Polini BIG Evolution (85mm conrod)
Hebo Manston 70cc
Hebo Manston 2 70cc
Stage6 R/T 70cc
TJT Racing (Minarelli)

Exhausts
Malossi MHR Team 70
Malossi MHR Team 2000
Malossi MHR Team 2004 (Piaggio)
Malossi MHR Team 2006 (Minarelli)
Polini Evolution 5-serie
Polini Evolution 6-serie
Yasuni / Bidalot Carrera 16
Yasuni / Bidalot Carrera 20
Yasuni / Bidalot Carrera 21
Yasuni / Bidalot Carrera 30
Hebo Racing II
Hebo Racing IV
Metra Kit Pro Race
Metra Kit Pro Race 2
DPR (70cc editions)
Stage6 R1400
XSH ROOST 70cc exhaust

Carburetors
19mm Dell’Orto [Black Edition]
21mm Dell’Orto [Black Edition]
25mm Dell’Orto
26mm Dell’Orto
28mm Dell’Orto
24mm TopPerformances / Mikuni Flatslide
28mm Keihin / Hebo
28mm OKO / Koso
Ibea (Kart carb, different sizes)
HHC (Kart carb, different sizes)
Tillotson (Kart carb, different sizes)
Baroni (Kart carb, different sizes)
JHC (Kart carb, different sizes)


Profile 6

Cylinders
2Fast4Race (78cc; 47,6mm x 44mm)*
2Fast4Race (86cc; 50mm x 44mm)
TCR; Team Cristofolini Racing (80cc; 47,6 x 45mm)
TCR; Team Cristofolini Racing (90cc; 50mm x 46mm)*
Malossi Big Bore Kit (77cc; 50mm x 39,3 / 39,2mm)*
Malossi Big Bore Kit (86cc; 50mm x 44mm)*
Polini Big Bore Kit (83cc; 52mm x 39,2mm / 39,3mm)*
Polini Big Bore Kit (93cc; 52mm x 44mm)*

Exhausts
Malossi MHR Team 2004 / 2006 (Piaggio)
Malossi MHR Team 2006 (Minarelli)
Malossi MHR Team Big Bore
Yasuni / Bidalot Carrera 21
Yasuni / Bidalot Carrera 30
JS DPR
TRT 2Fast
Team Cristofolini
XSH ROOST 77cc / 86cc
Polini BIG Evolution

Carburetors
28mm Dell’Orto
28mm Keihin / Hebo
28mm OKO / Koso
30mm OKO / Koso
32mm OKO / Koso
33mm Keihin PJ
34mm OKO / Koso
Ibea (Kart carb, different sizes)
HHC (Kart carb, different sizes)
Tillotson (Kart carb, different sizes)
Baroni (Kart carb, different sizes)
JHC (Kart carb, different sizes)

 

Thats a very good guide mate