Mikuni/Dyno Jet Conversion Table

Print
User Rating: / 47
PoorBest 
Written by Mr Tidy   
Friday, 11 June 2004

Reprinted by permission from Mr. Tidy's tech tips

Mikuni / Dynojet Jets

Mikuni Dynojet    

140

149.3

Flow rates based on size markings of Mikuni and DynoJet jets are not comparable .. 

As a guide .. the chart to the left indicates equivalent sizes based on the diameter of hole in the jet. 

Mikuni jets are chamfered on the inside opening at the threaded end and Dynojets have a machined flat surface. Keep this in mind when using this chart. These physical differences will never allow an exact comparison.

This chart is intended to be used as a tool to assist you in making a more accurate decision when selecting a jet size range or comparing tuning data where an opposing brand is being used.

Actual jet sizes are highlighted. 

DynoJet jets are marked according to the diameter of the hole in the jet .. ie: DJ150 = 1.5mm and DJ175 = 1.75mm. 

This is not true for Mikuni or most other OEM equivalent jets. This size Mikuni jet, (N102.221 Super BN), is marked according to its' flow rate, ie: 150 = a rating of 150 cc of fuel per minute. 


 

 

150

142.5

152.0

145

154.7

 

155

147.5

157.3

150

160

152.5

162.7

 

165

155

165.3

157.5

168.0

 

170

160

170.7

162.5

173.3

 

175

165

176.0

167.5

178.7

 

180

170

181.3

172.5

184.0

 

185

175

186.7

177.5

189.3

 

190

180

192.0

182.5

194.7

 

195

185

197.3

187.5

200

190

202.7



Questions should be asked in our forum (Use discuss link below). The forum is very active and you stand a good chance of getting your questions answered there. If you would like to leave feedback for the author, or have additional information you think will benefit others, please use the comment section at the bottom of this page.

Discuss this article on the forums. (0 posts)


DISCLAIMER: This information and procedure is provided as a courtesy and is for informational purposes only.  Neither the publishers nor the authors accept any responsibility for the accuracy, applicability, or suitability of this procedure.  You assume all risks associated with the use of this information.  NEITHER THE PUBLISHERs NOR THE AUTHORs SHALL IN ANY EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, PUNITIVE, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OF ANY NATURE ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE USE OR MISUSE OF THIS INFORMATION OR LACK OF INFORMATION.  Any type of modification or service work on your motorcycle should always be performed by a professional mechanic. If performed incorrectly, this procedure may endanger the safety of you and others on your motorcycle and possibly invalidate your manufacturer’s warranty.


Quote this article on your site | Views: 57209

  Comments (1)
exhaust pipe
Written by rmalone37, on 05-14-2006 17:03
hi everyone i have the longshot hs from vance@hines and the short pipe is coughing and poping and is out of beat from the other pipe .............2005 silverado :sigh

Only registered users can write comments.
Please login or register.

Powered by AkoComment Tweaked Special Edition v.1.4.6
AkoComment © Copyright 2004 by Arthur Konze - www.mamboportal.com
All right reserved

 
...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... -->



The Road Star Clinic is a collaborative community of riders who archive and publish user contributed technical data about Yamaha Road Star motorcycles.

We also sponsor the creation and support of other community websites similar to our own. Inquiries about availability of a website for your community can be submitted to us via any "Contact Us" option on the Clinic.

Copyright 2003-2007 Road Star Clinic and its respective authors. Road Star Clinic is sponsored by the folks at MLSHomeQuest.com.