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General Category >> Rubber Side Down! >> Rejet after muffler/air filter change
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Message started by Joer0952 on 12/23/16 at 12:13:38

Title: Rejet after muffler/air filter change
Post by Joer0952 on 12/23/16 at 12:13:38

Hello, I read Serowbot's thread on rejetting the carburetor and to be honest some of it is over my head but I think I got the basic gist of how to rejet my bike, but my question is what size jets to get. I figured from the reading that I should go richer since I live in NJ at sea level and just purchased a dyna muffler, and was thinking of getting the K&N SU-6595 air filter. Currently the bike is bone stock and I wanted to get recommendations on what size jets to get for the main and pilot jet as well as the spacer size for after the muffler/air filter upgrades.

Thanks,
Joe

Title: Re: Rejet after muffler/air filter change
Post by Kenny G on 12/23/16 at 12:28:22

Joe,

Contact Lancer and he will hook you up with what you will need to tune your bike based on your location and elevation.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1338581006

Kenny G

Title: Re: Rejet after muffler/air filter change
Post by Joer0952 on 12/23/16 at 12:43:10

Thanks for the reference, now I just need 2 more, make that 1 more post till I can PM lol

Title: Re: Rejet after muffler/air filter change
Post by Kris01 on 12/23/16 at 15:43:00

I'm at sea level. Well, maybe 200-300 ft. above. See my sig below.

Title: Re: Rejet after muffler/air filter change
Post by justin_o_guy2 on 12/24/16 at 13:14:26

The factory jetting changed down through the years to meet EPA regulations. Knowing the year model would help.

Title: Re: Rejet after muffler/air filter change
Post by Joer0952 on 12/24/16 at 14:34:06

my s40 is a 2011

Title: Re: Rejet after muffler/air filter change
Post by Kris01 on 12/24/16 at 17:49:02

http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1098869040

http://suzukisavage.com/images/uploaded/CarbSpecs01web.jpg

Title: Re: Rejet after muffler/air filter change
Post by Joer0952 on 12/25/16 at 01:10:24

Those are the jet sizes that come from the factory, since I am at sea level and I am changing the muffler and air filter I believe I will have to change those sizes, I just don't know what sizes to change them to.

Title: Re: Rejet after muffler/air filter change
Post by Yoshi on 12/25/16 at 02:29:09

I'm in your location (same round about sea level height) I've tuned 3 Savages so far and I can tell you something,

52.5 pilot and 152.5 main were good for muffler like the dyna with a flat panel filter
55 pilot and 155 main were good with k&n cone filter and muffler like the Jardine but always feels rich

I like the look of the cone filter but it does nothing to the bike as far as hp but the muffler opens it up a bit (seat dyno)

One of my favorite setups was the Jardine open muffler and a panel k&n filter, i ran 52.5 (stock pilot) and 152.5 main

Title: Re: Rejet after muffler/air filter change
Post by Joer0952 on 12/25/16 at 06:22:31

50415069656B6172736B69000 wrote:

Thank You for the reply, so I assume the best setup for me with a K&N panel filter and dyna muffler will be 152.5/52.5. I also read something about a spacers, what size spacer did you use?

Thanks,
Joe

Title: Re: Rejet after muffler/air filter change
Post by Yoshi on 12/25/16 at 06:48:25

Half spacer or 2 washers

If you're interested I haveva used MAC exhaust for sale..

Title: Re: Rejet after muffler/air filter change
Post by Kenny G on 12/25/16 at 08:03:01

#4 Machine Washers

Get brass or stainless steel.

ACE Hardware has them, and most any other hardware outlet will stock them.

Kenny G

Title: Re: Rejet after muffler/air filter change
Post by Kris01 on 12/25/16 at 17:16:29

The stock plastic spacer is equal to about 4? of the #4 washers. The less washers you use the richer your midrange will be.

Title: Re: Rejet after muffler/air filter change
Post by Joer0952 on 12/26/16 at 11:17:38

Last question, I think I read somewhere that someone said that if you change the air filter/muffler it would be a good idea to change the vacuum petcock to the raptor 660 manual petcock. Is that true and, if so just out of curiosity, why?

Thanks

Title: Re: Rejet after muffler/air filter change
Post by verslagen1 on 12/26/16 at 11:40:04

Even with the stock setup, you can go up a long hill at full throttle and it'll cut out on you cause the vacuum drops enough not to open the petcock.

So with a more free flowing filter and/or exhaust, it doesn't take much to cause it to cut out on you.

Add in age factors and a leaky vacuum hose and it's a wonder it ever stays open.

Title: Re: Rejet after muffler/air filter change
Post by Joer0952 on 12/26/16 at 11:52:35

Well that makes sense, thank you for the help

Title: Re: Rejet after muffler/air filter change
Post by Dave on 12/27/16 at 04:05:44

7658537E4F5C4E553D0 wrote:

#4 Machine Washers
Get brass or stainless steel.

I bought brass washers, and when I compared them to the steel ones I found them to be much thicker.......2 brass washers were as thick as 3 steel ones......so I only used 2 of them.

So....if you decide on brass - check the thickness before you decide how many to use.