Can someone explain - looking at the info for the Dynojet kit for the Savage, it seems they send 5 main jets (DJ138, DJ140, DJ142, DJ144, and DJ146).   If there is a difference between Mikuni versus Dynojet jet sizes, and assuming the numbers ( DJ138 ) are associated with size, then the jets that Dynojet include in the Stage I kit are useless, even for a stock Savage!  

When you are talking about the 152.5 and 155 main jets in most of the other posts (both in the tech section and here), where are you getting those jets?  Is the Dynojet kit useless?  

See Nightrain's post on jet size comparison and White spacer and jetting

According to Dynojet - that chart is useless (although you will notice he does not really answer my questions - I emailed them back about it):

Tom

The reference chart that you provided is incorrect.  Dynojet, like other jet manufacturers, uses numbers to label their jets, however, those numbers do not represent the same qualities of the jet that other manufacturers
numbers do.  Bearing this in mind you cannot cross two numbers that don't represent the same thing.  I can what you mean when you look at the hole size of the jet.  Our jets are specially designed with tapers on the entrance and exit to the jet.  You also need to consider the drastic change that our kits make with the needle.  All of this has to be considered.  If you set the kit up according to the baseline specs that are outlined in our installation guide,
you shouldn't have any tuning issues.  If you need help making adjustments after the kit is set up properly, you can contact our toll free tech support dept. at the number listed below.

Thank you

Curt Schannen
Technical Support
Dynojet Research
(800)992-4993

-----Original Message-----
From: Tom Hunter
Sent: Tuesday, January 11, 2005 6:48 AM
To: suzukitech@dynojet.com
Subject: Dynojet main jet sizes

Dear Sir or Madam,

I have a 1996 Suzuki Savage.  I purchased your Dynojet kit Stage 1 3107.001 (34112904) but now have questions about the sizes of main jets sent with the kit.  I've read that there is a difference between Mikuni main jets and Dynojet main jets.  And that the jets sent with the kit seem to be smaller than the stock jet (Mikuni 145).  It seems that a Mikuni 145 (stock main jet in a Savage) is bigger than any of the jets your company sends in the kit (DJ138 to DJ146).  Can you explain?

Mikuni--Dynojet
140-----149.3
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  

Tom Hunter