SuzukiSavage.com - Rejetting carb?

stevemillerster YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 18 Spencer In Gender:	Rejetting carb? 04/05/10 at 17:36:04 I have read a lot here about folks rejetting their carbs. I am not really sure what this is intended to do... stop the back fire, add HP... any words?
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28848 Tucson Az Gender:	Re: Rejetting carb? Reply #1 - 04/05/10 at 17:39:56 If you live at near sea level elevation,... most stock bikes, including the Savage, are jetted lean for EPA emissions... Jetting a bit richer, will let it run a little cooler and perform a bit better... possibly less pipe blueing, but slightly reduced MPG's... If you are at 2500ft to 4000ft... the jetting is not too bad stock...
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bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Rejetting carb? Reply #2 - 04/05/10 at 17:42:09 stevemillerster wrote on 04/05/10 at 17:36:04: I have read a lot here about folks rejetting their carbs. I am not really sure what this is intended to do... stop the back fire, add HP... any words? It helps on the backfiring and does give you more power that you can feel.
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Rocco Serious Thumper Offline addicted 2 riding TcB Posts: 1049 south florida Gender:	Re: Rejetting carb? Reply #3 - 04/05/10 at 20:14:19 i live in south fla(neg sea level lol) and i put a k&n and a debaffled sportster muffler, so i needed more fuel
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Rejetting carb? Reply #4 - 04/06/10 at 03:53:31 A minor `twist on the mixture needle is often needed
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bushkanaka YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 26	Re: Rejetting carb? Reply #5 - 06/10/10 at 05:50:08 How hard is it to rejet carb? I have HD muffler, but stock air filter. Have some bluing on front of muffler, but not bad. Thought it came from where we didn't quite have the connection sealed well enough. What causes the bluing?
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Re: Rejetting carb?
Reply #6 - 06/10/10 at 08:25:43

We all have our own ideas on blueing, but I'm convinced that just because the pipe get blue over time doesn't mean that it has to be running too lean.
W/ stock jetting except for spacer mod, my pipe was quite blue when I bought it at 3500 miles, run mostly at sea level, and now here at 800' elev, it shows no signs of running too lean.

However, if I were to run this bike at sea level on hot days and hi sp heavy throttle, I would maybe have to upjet a touch.

bushkanaka wrote on 06/10/10 at 05:50:08:

How hard is it to rejet carb? I have HD muffler, but stock air filter. Have some bluing on front of muffler, but not bad. Thought it came from where we didn't quite have the connection sealed well enough. What causes the bluing?

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Rich
'07 S40 Blvd stocker, except drilled OEM exhaust and white spacer mod...1/2 (.055)

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onelunger

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Re: Rejetting carb?
Reply #7 - 06/10/10 at 09:23:12

stevemillerster wrote on 04/05/10 at 17:36:04:

I have read a lot here about folks rejetting their carbs. I am not really sure what this is intended to do... stop the back fire, add HP... any words?

Rejetting the carb is the means to getting the propper amount of fuel mixed w/ the incoming air. By getting the ratio correct (stock is far cry from "correct" for most) you will get more power and a better/cooler running engine. The popping/ backfiring is caused (at least in part) by a screwed up air/fuel mix by Suzuki.

In order to meet EPA requirements (emissions) they were forced to either sink money into the bike to add a catalytic converter or other secondary emissions system, which they didn't want to do on a low cost bike like the Savage/S40, or run a less than optimal air fuel mix. They chose the overly lean (too much air, not enough fuel) carb settings because it cost them very little $$$ to do.

With the correct air/fuel mix you will be amazed at how much more torque and HP "Thumper" will make. It really is pretty dramatic.

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bushkanaka YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 26	Re: Rejetting carb? Reply #8 - 06/10/10 at 10:33:11 How do you rejet the carb and correct the fuel/air balance, or is it better to take it to a mechanic?
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bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Rejetting carb? Reply #9 - 06/10/10 at 10:37:03 Take off the fuel bowl at bottom of carb,You will see two screws up in the carb that is the jets,If its stock you can go one richer on each one.
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bushkanaka YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 26	Re: Rejetting carb? Reply #10 - 06/10/10 at 10:51:10 sorry, but what is one richer? turn it right or left or what? How do I know when it is good?
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bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Rejetting carb? Reply #11 - 06/10/10 at 11:06:17 You have to take them out and replace them next higher number is richer.
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Re: Rejetting carb?
Reply #12 - 06/10/10 at 11:28:20

Hardest thing about rejetting is getting the four screws out, that hold the floatbowl (bottom of carb)...
If you can do that,.. the rest is easy...
If you do, do that,... replace those screws with allen heads... then the future is bliss...

If you are stock jetted,... start with a #150 main (ask for large head #150 Mikuni jet)...
Leave the pilot stock, and try adjusting the idle mix screw,... under brass plug on rightside of carb... see tech section for instruction...

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earlytimz Senior Member Offline Savage model 417 (4 speed, 17mm) Posts: 382 BG, KY Gender:	Re: Rejetting carb? Reply #13 - 06/10/10 at 12:28:42 Where are y'all located? Might be someone close that can walk you through it...
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bushkanaka YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 26	Re: Rejetting carb? Reply #14 - 06/10/10 at 13:38:45 south of Charlotte, north of Lancaster, SC
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