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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> air mixture screw question /cgi-bin/YaBB.pl?num=1112236658 Message started by erikrichard on 03/30/05 at 18:37:37 |
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Title: air mixture screw question Post by erikrichard on 03/30/05 at 18:37:37 I drilled out the screw cover today and discovered the air mixture screw was turned all the way in. Is that the way '98's came, or was that a dealer screwup? I adjusted it 1 1/2 turns out, and it does seem to run better. btw, the header pipe was very blue at the head when I bought it and turns yellow after the bend toward the muffler - this tells me it is running rich, but maybe thats just par for the course with these bikes. any thoughts? |
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Title: Re: air mixture screw question Post by bobo383 on 03/30/05 at 19:09:56 My 98 was pretty much the same when I got it last year. Blue and Yellow exhaust are not rich, though, that's a sign of heat from the engine being too lean. Richer = cooler due to latent heat of vaporization of fuel. |
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Title: Re: air mixture screw question Post by Greg_650 on 03/30/05 at 19:33:37 erikrichard wrote:
The header will get a nice golden color under a proper mix. If it turns blue then it is too lean and a little hot (not rich). The fact that the screw was all the way in is part of it, BUT that was set at the factory....so what did the previous owner do to modify the engine? Or did the previous owner run it hot in some way? Long idles or lots of slow traffic in the summer. Adjusting it out was good and probably helped the backfires a bit too.....but you didn't mention if everything is stock.....that is usually the key. |
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Title: Re: air mixture screw question Post by Savage_Rob on 03/31/05 at 06:09:42 My 98 was almost all the way in... less than a quarter turn from it anyway. I backed it out to one and a half turns from fully in and it stuck there. I can't seem to get it freed but it seems to be about where I want it so I'm only mildly concerned. |
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Title: Re: air mixture screw question Post by slavy on 03/31/05 at 06:26:04 Usually when the people try to drill-out the plug, they touch the scrw with the tip of the drill bit and turn the pilot screw in. This creates the impression that the screw has been almost all the way in. |
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Title: Re: air mixture screw question Post by Savage_Rob on 03/31/05 at 06:30:32 It's entirely possible in my case because I know the bit did touch the screw. |
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Title: Re: air mixture screw question Post by erikrichard on 03/31/05 at 09:00:04 Wow, thanks for the info, I thought blueing meant rich. That really suprises me, as I live near Denver - since the air is leaner that usually causes a rich condition. I am sure my drill didnt turn the screw, as it has an electric brake and I was very carefull. Plus, I had to change the idle after I backed it out. Bike is totally stock, 5k on it. |
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Title: Re: air mixture screw question Post by rkutzner on 03/31/05 at 17:58:46 Drill the screw in? Gotta disagree with that one. How come everyone finds their screw turned way in and when they turn it out where it belongs 90% of the huffing and chuffing goes away ? That's because it wasn't turned 1.5 turns out (seems to be a common good setting) to begin with !!! What you are seeing is a factory federal mandated tree hugger setting! Properly adjust it off the factory 'almost closed' position and it makes a world of difference. Thin out that white spacer and up the main jet to 150 or 152.5 and it is a WORLD of difference........... ;D |
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Title: Re: air mixture screw question Post by Greg_650 on 04/01/05 at 05:27:57 erikrichard wrote:
Yep, and now your backfires will be fewer. And even with the stock pipe you can follow rkutzner's advice and change the main and the spacer. Then you'll see a real difference. |
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Title: Re: air mixture screw question Post by erikrichard on 04/01/05 at 08:13:23 I called the Harley dealer yesterday and asked about a sporty muffler. He said he has a ton of them and I could take my pick for $30. You still think I should rejet after this change to 150 given I live at 6,000 feet? |
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Title: Re: air mixture screw question Post by Greg_650 on 04/01/05 at 08:25:49 erikrichard wrote:
I'm still trying to understand why people want to put a Sporty muffler on a Savage. Not because of a dislike for HD, but because of the design....we have a single cylinder 650 and a dual exhaust Harley 883 or 1200 is using a muffler designed for the flow from either a 440 or 600 size cylinder. To me, that sounds like a step backwards in flow, unless you start pulling out the guts....and if you're gonna do that, why not just do it to the stock Savage pipe? You'll save all that mounting and clamping work too. |
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Title: Re: air mixture screw question Post by woodworker on 04/01/05 at 09:16:29 Greg; Agree with you 100%, everyone is defeating the original purpose of a muffler change (more power-better sound). If anything they should be installing a muffler from at least a 1450cc HD. |
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Title: Re: air mixture screw question Post by slavy on 04/01/05 at 21:22:44 I had the same concern, BUT the results show different. It is not the fact that HD exhaust is the best - You can get a ton of better pipes. Simply the original Suzuki muffler sucks. Just take a look at the small diameter of the back and compare it with the Sportster one. Listen at the wistling sound of the original pipe and decide do You like it. I don't. The fact that the HD exhaust is louder tells You that it slows down the gases less. I don't want to go into the size of the expantion chamber or into the lenght of the exhaust, because I haven't done any calculations. In my expirience the Sportster exhaust is lighter, cheaper and makes the bike run and sound better |
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Title: Re: air mixture screw question Post by Greg_650 on 04/01/05 at 21:32:05 slavy wrote:
Sure,,, but the exhaust is tuned for a purpose and the dealer guy said that he had a "ton of them lying around" (gotta make ya wonder)...so picking the RIGHT one is the deal. They aren't all the same and they don't just bolt right up and you have to MAKE it fit and then you HOPE that it is a better choice. So why buy an exhaust from a Hummer when you need one for a Cadillac? 8) |
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Title: Re: air mixture screw question Post by WD on 04/01/05 at 23:00:27 Because the aftermarket Savage spec mufflers are also junk? I've seen and heard the Jardine up close...pass...cheaper made than the stocker. I've seen and heard the Supertrapp, nice looking, tunable, seems to have a problem with the guts falling out though. JC Whitless and such? Tried it, they're junk. MAC? No experience with, ditto the Raask, but both seem okay per Max in Moses Lake. The piglet muffler is inexpensive, lasts a disproportionately long time, holds its chrome well, sounds good, and flows like mad. There are two sizes, for an otherwise stock bike, get the small center hole, for a modofied carb, get the large center hole, also known as a Screaming Eagle upgrade. Still fairly inexpensive, flows too much for stock Mikuni B40 jetting. Simple economics (wretchonomics?). -WD |
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Title: Re: air mixture screw question Post by klx650sm2002 on 04/02/05 at 01:02:24 Raask seams to be best, and looks good too. Clive W :D |
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Title: Re: air mixture screw question Post by bobo383 on 04/02/05 at 04:48:35 No problem with any of the exhausts mentioned here. I put a sportster muff on mine cause it was CHEAP, and my original pipe was ungly/discolored when I got the bike. After putting the sportster muff on, I noticed the chrome is outstanding, the sound is decent, and the bike's power was improved. Still need to move it further back to keep from blackening the rear brake arm. Screaming Eagles sound soooooo good but the stock carb can't keep up with it. Stock Sportster carbs barely keep up even with massive jetting changes. My neighbor has Screamers on his sporty, and I've had to help him with the jetting, that's how I know. In return for my help he let me borrow an SE to check it out on the Sav. I need to get another carb and start playing. SUPERTRAPP - One was on my XR500 when I got it, not a Savage but still a thumper. That's a good exhaust. Having a hard time parting with the money to get another (another Screaming Eagle problem). Anybody try a dynomax glass pack, or any other car muff? Dynomax is $19 in the Jeg's catalog. May have to get one just to try. It would be different. |
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Title: Re: air mixture screw question Post by Greg_650 on 04/02/05 at 07:00:41 WD wrote:
Nope. Quote:
Nope. Never heard that and we have one that's been running for almost 4 years. The disks have been removed, added to, and reinstalled. Guts don't fall out for no reason. Quote:
Not entirely accurate....The Raask is good per Greg in Portland. BTW. Quote:
That is all it is...a matter of money. You get what you pay for. If you don't want to spend the money for the correct fit, then you end up starting other topics about how to seal the pipe with muffler tape and how it smells when it burns off. |
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Title: Re: air mixture screw question Post by slavy on 04/02/05 at 12:40:02 Sooner or latter everything comes to money. Otherwise nobody will have to work and everybody will have a bike to match each suit. Not too long ago we ere discussing the double price of the same exhaust if You buy it from the dealer, compared with some car catalog. Here the things are comming to the same - what You want to get and how much do You want to pay for it and how much time and effords are You ready to invest instead of money. So far I like the best the Screaming Eagle HD pipe. It works very good with the stock carburetor after rejetting and You don't have to spend hundreds of $$. The Sporty pipe works just fine and is an excellent deal for the price. I don't have any adapters, just a mounting plate, but even if You have to put an adapter it is still worthed the time. And if You have the time You can order the stock gasket , like Yoou have to order it if You buy the original exhaust. So far I can say that a gutted stock pipe sounds the worst and after that is the stock 95 and latter pipe in an original condition. About the performance I haven't found anything worse than the original Suzuki pipe. This is my oppinion of cource. Everybody has one..... |
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Title: Re: air mixture screw question Post by Greg_650 on 04/02/05 at 12:52:32 Not saying that a Harley pipe can't work correctly on a Savage...however, I read a lot of posts about people having difficulty installing or adapting one to the bike. So maybe they are buying the wrong one, or don't know how to install it. The rest was my counter-point concerning the SuperTrapp and the Raask, which definitely lie on the high end of the price spectrum. And equally so, I've had absolutely no problems with their fit or performance just the way they came out of the box. |
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Title: Re: air mixture screw question Post by slavy on 04/02/05 at 13:57:18 No argument about the Trap or Raask. I never tried them, but I am sure what is designed for LS will work the best and fit the easiest. The Sporty exhaust fits right on- it has the same diameter like LS pipe. The only thing that You have to do is to make a L-shaped plate with couple of holes - bolts to the original mounting bracket and the exhaust mounts to the plate. The problem that people were complaining about is - the original pipe is longer and has a slight bend outwards. Th HD pipe is shorter and doesn't have any bend, so it is before the RR hub and the smokes the RR brake adjuster. This why some of the riders go to a muffler shop and have a piece of pipe cut and bend to put it between the header and the muffler. It brings the exhaust back and points it out. Would I have the money, I'd buy each one of the pipes and try them out. But Would I have the $$ I would be somewhere on the islands sun bathing my behind ;) |
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Title: Re: air mixture screw question Post by Greg_650 on 04/02/05 at 14:43:43 Agreed.... ;D |
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