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Message started by tonewheelmonster on 10/12/12 at 17:24:36

Title: help choosing jets
Post by tonewheelmonster on 10/12/12 at 17:24:36

i asked these questions in a thread about painting the header. Not the best way to get answers so i'm making a dedicated thread.

So i bought a harley dyna exhaust and am about to get a K&N. The only thing i don't know much about is the jets and what to do with them.

I live on the eastern shore of maryland. Sea level and really humid.

as far as i know the bike is stock right now. i haven't done anything to it except adjust the idle mix screw out 3.

would i need to rejet the carb? thanks

Title: Re: help choosing jets
Post by Serowbot on 10/12/12 at 18:25:08

K'N cone or slip-in?... the cones breath way too much.... jetting will be more finicky...
... with a slip-in,... I'd go with a #150 main,... keep the pilot stock unless you need to turn the idle mix out more than 3 turns from full closed... with a cone, I'd start with a #152.5...
... and,.. based on Halvor's O2 tests... I'd try it with the stock spacer as well... ... if you notice any jerkyness at mid throttle, go to a 2/3 spacer ...

Keep in mind.... bigger jets don't make you faster,.. the correct jets do... ;)...

Title: Re: help choosing jets
Post by tonewheelmonster on 10/12/12 at 20:18:08

awesome info, thanks. i'll get a 150 jet. where might one find these jets? is a jet a jet or do I need one specific to my carb?

Title: Re: help choosing jets
Post by Serowbot on 10/12/12 at 20:23:21

Most any bike shop should have Mikuni main jets... ask for a "large round #150 Mikuni main jet"...
... pilots are trickier...
;)...

PS... your main jet has a brass washer under it,.. don't lose it, you need it under the new one...

Serowbot's carb tuning tips for beginners... (http://suzukisavage.com/cgi-bin/YaBB.pl?num=1309246277)

Title: Re: help choosing jets
Post by Dave on 10/13/12 at 04:45:06

I have never had any luck at a local motorcycle shop.

I have used this online company......
http://www.jetsrus.com/

The Pilot jets you want are:N151.067
The Main jets are: MIKUNI LARGE ROUND MAIN JETS N100.604

I could not tell any difference between the original equipment or OEM equivalent.

Title: Re: help choosing jets
Post by gdrseeker on 10/13/12 at 08:01:28

Lancer sells Jet sets.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1336741909

Title: Re: help choosing jets
Post by tonewheelmonster on 10/13/12 at 09:02:17

i actually found some on amazon last night for 8 bucks with shipping so i went ahead and did it. cant wait for next weekend.