Jetting Specs
 

 

 

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Jetting Specs
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 VM Round Slide Mikuni Carburettor Standard Specifications

Carb No. Size
(mm)
Main Jet
(4/042)
Pilot Jet
(VM22/210)
Needle Jet
(Series No.)
Jet
Needle
Throttle Valve
(Part No.)
Main Air
Jet
(Part No.)
Needle
Valve
(Part No.)
VM16-519 16 70 25 D-8
(VM/67)
3DJ3 2.5
(VM16/137)
0.5
BODY
3.3
(VM34/39)
VM18-144 18 80 30 O-0
(145)
4F18 3.0
(VM18/158)
2.5
BODY
1.5
(VM15/172)
VM20-273 20 180 225
(M28/1001)
O-6 / N-6
(239)  (332)
4J13 2.0
(VM20/491)
0.5
(VM13/04)
1.5
(VM15/172)
VM22-133 22 100 30 N-8
(257)
4D20 2.0
(VM26/21)
2.5
BODY
2.0
(VM26/26)
VM24-512 24 210 40 N-8
(864)
5L14-4 1.5
(VM26/21)
0.8
BODY
2.0
(VM26/26)
VM26-8074 26 190 60 N-8
(182)
5F21 2.0
(VM28/56)
0.5
(BS30/97)
2.5
(VM26/26)
VM26-606 26 190 225
(M28/1001)
O-0
(332)
5E75 1.5
(VM24/361)
0.5
(VM13/04
2.5
(VM26/26)
VM28-49 28 200 60 N8
(169)
5F21 2.5
(VM28/56)
0.5
(BS30/97)
2.5
(VM26/26)
VM30-83 30 250 40 P-5
(159)
6F5 2.5
(VM34/110)
2.0
(BS30/97)
3.3
(VM34/39)
VM32-193 32 200 35 Q-6
(159)
6DP17 3.0
(VM32/65)
2.0
(BS30/97)
3.3
(VM34/39)
VM32-33 32 200 35 Q-6
(159)
6DP17 3.0
(VM34/110)
2.0
(BS30/97)
3.3
(VM34/39)
VM34-168 34 260 35 Q-2
(159)
6DH4 2.5
(VM34/110)
2.0
(BS30/97)
3.3
(VM34/39)
VM34-275 34 260 35 Q-2
(159)
6DH4 2.5
(VM32/65)
2.0
(BS30/97)
3.3
(VM34/39)
VM36-4 36 310 35 Q-5
(159)
6FJ6 2.5
(VM36/36)
2.0
(BS30/97)
3.3
(VM34/39)
VM38-9 38 330 30 Q-2
(166)
6DP1 2.5
(VM38/24)
0.5
(BS30/97)
3.3
(VM34/39)
VM44-3 44 310 35 AA-5
(224)
7F7 2.5
(VM44/23)
0.5
(BS30/97)
3.3
(VM34/39)
*Remarks:  
  • VM18-144, VM16-159 Clamp on type
  • VM20-273, YSR50 Flange Type
  • VM22-133, Flange Type
  • All VM26 thru VM44mm, Spigot Type
  • VM32-193, Right Side Idle Screw
    (Match to VM32-33)
  • VM34-168, 11.5mm. Bell, Lg. Fuel Inlet
  • VM34-275, Right Side Idle Screw
    (Match to VM34-168)

 

 


The VM38-9 is available with factory jetting as listed on the top row below, or can be supplied with discounted additional jets ( ) to suit suggested specifications for the motor cycles listed. Any named jet size noted in the table below is N/A and must be sourced from the bike manufacturer.

Keep in mind that these are suggested specs, and all tuning procedures, as found in our Tuning Tips section must be adhered to for the confirmation of any supplied jet's compatibility with your engine.

We strongly recommend buyers take the additional one up, one down extra main jets option so as to determine exact top end settings.
 

 

 

VM38-9

 

Click on  info to view any special items  available VM38-9 supplied with the suggested jets to be changed    

Vm38-9 with an additional 2 main jets for  tuning purposes

 

YEAR

CC's Pilot Jet Jet Needle Needle Jet Air Jet Main Jet
 
VM38-9 AS IT COMES  FACTORY   30 6DP1 Q2 0.5 330   $143.00    
 4 STROKE MOTOR CYCLES
Harley XR   750          
Harley Sporty   1000                  
Honda XL-bored-420 70s 350              
Honda XL   500              
Honda XBR   500            
Honda SINGLE   500            
Jawa speedway   500            
YAM TT,XT   500            
YAM 10.5:1 TT,wagit76cam SRvalves,exh   500              
YAM SR   500              
2 STROKE MOTOR CYCLES

Bultaco

Frontera

78

370

         

CZ

 

72

380

 

         

Honda

Elsenor

76

250

 

         

Honda

CR

70ís

250

 

         

Husky

CR

77

250

 

         

Husky

 

83

250

 

         

Husky

W 250

82

250

 

         

HUSKY

WR

2K

360

         

HUSKY

CR

74

400

 

         

HUSKY

 

71

400

 

 

 

         

HUSKY

CR

80

390

 

         

HUSKY

 

82

430

 

         

HUSKY

 

73

450

 

         

HUSKY

 

82

430

 

         

KAWA

KX

81

443

 

         

KAWA

KX

80

420

 

 

 

         

Macho

 

 

400

 

 

 

         

MACHO

 

82

490

         

Suzuki

RM

83

250

NA

         

Suzuki

RM

81

250

NA

         

SUZ

RMB

77

370

 

         

SUZ

WR500

92

500

 

         

YAM

YZ

 

250

 

         

YAM

YZ

76

250

 

         

YAM

YZ

77

250

 

         

YAM

YZ

80

250

         

YAM

YZ

83

250

 

         

YAM

YZH

81

250

NA

         

YAM

YZ

78

250

 

         

YAM

IT

 

250

 

 

         

YAM

MX

 

250

 

         

YAM

WR

94

250

 

         

YAM

Y400E

78

370

 

         

YAM

Y400F

79

400

 

 

         

YAM

YZ

78

400

 

         

YAM

YZ

77

400

 

         

YAM

IT400D

77

400

 

         

YAM

IT

80

425

 

         

YAM

YZH

81

465

 

 

         

YAM

YZ-J

 

490

 

         

YAM

IT

83

490

NA

 

 

         

YAM

MX

 

500

         

YAM

SC500

74

500

 

         

 


T. D. Hatrick and Co., Pty Ltd, 93 Ingham Rd, Townsville, 4810
Phone: 07 47712677    Fax:  07 47211616  P.O. Box 5302, Townsville 4810 Email: tdh@mikunioz.com 
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