So i have a dynojet 132 jet
N1tc needle
Kawasaki part # 38 jet

ive read that Dynojet numbers are not the same as kawasaki(kehin) numbers..

is this the truth?

By this chart

Keihin Jets -------- DJ Jets

Num / Thou. ------- Num / Thou.
92.5 / 0.035 ------- 92 / 0.035
95 / 0.036 ------- 94 / 0.036
97.5 / 0.037 ------- 96 / 0.037
100 / 0.038 ------- 98 / 0.038
102.5 / 0.039 ------- 100 / 0.039
105 / 0.040 ------- 102 / 0.040
107.5 / 0.041 ------- 104 / 0.041
110 / 0.042 ------- 106 / 0.042
112.5 / 0.043 ------- 108 / 0.043
115 / 0.044 ------- 110 / 0.044
117.5 / 0.045 ------- 112 / 0.045
120 / 0.046 ------- 114 / 0.046
122.5 / 0.047 ------- 116 / 0.047
125 / 0.048 ------- 118 / 0.048
127.5 / 0.049 ------- 120 / 0.049
130 / 0.050 ------- 122 / 0.050
132.5 / 0.051 ------- 124 / 0.051
135 / 0.052 ------- 126 / 0.052
137.5 / 0.053 ------- 128 / 0.053
140 / 0.054 ------- 130 / 0.054
142.5 / 0.055 ------- 132 / 0.055
145 / 0.056 ------- 134 / 0.056
147.5 / 0.057 ------- 136 / 0.057
150 / 0.058 ------- 138 / 0.058
152.5 / 0.059 ------- 140 / 0.059

by that chart i shouldput a 124? Dynojet in...

or am i really over thinking this?

 

here's another chart for ya: and yes they flow slightly different because of nozzle effect of the internal shapes. Also the DJ main jet sizing is using THEIR needle, if your using the 300 needle I'd try and size the main to a keihin equivalent that's known to work ~128

http://www.jetsrus.com/FAQ_mikuni_vs...ihin_sizes.htm

 

well i wanted to do a 38/132 combo

so i guess now ill do a 38/DJ124 combo with n1tc needle

does that sound right?

 

well whats your altitude and riding style, helps a lot.

 

I'm on the ocean..dead sea level....and I'm 100% street

 

For street, ditch the airbox lid and snorkel and fit a K&N filter, #138 main jet (#132 JD main jet) and a #38 pilot. Iridium plug gets my vote too.