Mikuni Jetting Chart for H-D   by www.braigasen.com  

Motorcycle

Carb

MJ

PJ

NJ

  Needle

Comments

Dyna SuperGlide FXD

HSR42

165

17.5

Y6

-98

   V. Thunder 2015 cam, SE 6K ignition module, 50 pump, needle third clip
EVO 80 ci

HSR42

160

25

Y6

-97

Opened up. Acc.pump 60
EVO 80 ci 1990 on

HS40

165

17.5

Y6

9DJY01

AJ 1.1 Sudco jetting recommendation
EVO 80 ci

HSR42

165

25

Y6

-98

Stock
EVO 80 ci

HSR42

160

17.5

Y6

-97

Acc.pump 50 (Bozz)
EVO 80 ci

HSR42

160

20

Y6

-97

Acc.pump 50
EVO 80 ci

HSR42

165

20

Y6

-98

Middle clip. 10:1, V-Thunder 5005
EVO 80 ci

HSR42

165

20

Y6 

-97

SE heads, EV27 cams, Acc.pump 50
EVO 88 ci

HSR42

165

20

Y6

-98

Middle clip. Acc.pump 50
EVO 89 ci

HSR42

165

25

Y6

-96

Middle clip. Acc.pump 70, Crane Hi 4E, 90.4 tq, 50 mpg with 65 mph
EVO 97 ci

HSR42

170

25

Y6

-97

10.3:1, 96 hp, 105 tq,
EVO 107ci

HSR48

190

25

Y6

-97

Needle Valve 4.5, Acc.pump 70, 11.5:1, S&S 631 cams (or Main 185, -96)
EVO FXD -95

HSR42

165

20

Y6

-98

Jetting at 10.000 feet to sea level. Leanest needle position. 
Ironhead -73, 1000 cc

VM38

330

35

P8

6DP1

Slide 2.5, Air jet 0.5 (Salty)
Panhead, 74 ci

VM38

280

25

P8

6DP1

No further information
Revtech 110 ci

HSR42

170

22.5

Y6

-98

Acc.pump 60
Servicar 750 cc

VM36

300

40

P6

6DP17

Single carb. Air jet 0.7, Slide 2.0 
Shovel -74

VM38

330

30

Q2

6DP1

Slide 2.5 (Sudco)
Sportster 1200 cc -98

HSR42

160

20

Y6

Y6

Nallin Stage 2 heads, Buell T-storm pistons, N4-cams, T-header pipe, SE AC
Sportster 1000 cc

HSR42

175

20

Y6

9DJY4-96

Acc.pump 50
Twin Cam 88 ci

HSR42

165

20

Y6

-98

Also 160 works and -97 in leanest pos. (05FLHTC)
Twin Cam 88 ci

HSR42

170

22.5

Y6

-96

Hippo 570 Build
Twin Cam 88 ci

HSR42

160

25

Y6

-96

Y6 needle
Twin Cam 95 ci

HSR42

165

20

Y6

-98

Minton Build. 21 cams. Big Boyz Heads. 2-1 Racing Blackhole. A/P50
Twin Cam 95 ci

HSR45

160

22.5

Y6

-97

Needle 2nd pos. SE203 cams, V&H True Duals, Bassani Slipons, K&N
Twin Cam 95 ci

HSR42

165

20

Y6

-98

Ported heads, SE 251 cams, Acc.pump 50
Twin Cam 95 ci

HSR42

165

20

Y6

-98

Middle clip. Acc.pump 50
Twin Cam 95 ci

HSR42

165

20

Y6

-97

Needle 2nd pos. 
Twin Cam 116 ci

HSR45

175

25

Y6

-98

No further information
Twin Cam 127 ci

HSR48

192.5

25

Y6

-98

Needle 4th pos. Air screw 7/8. NB 27.5 pilot too big!
Twin Cam 131 ci

HSR48

205

30

Y6

-96

HSR45 needle. Air screw 3/4 turns. (Bruce)