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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Power adder....? /cgi-bin/YaBB.pl?num=1347755719 Message started by Blue04Savage on 09/15/12 at 17:35:19 |
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Title: Power adder....? Post by Blue04Savage on 09/15/12 at 17:35:19 Well I did a little looking to find HP, and Torque ratings for the savage. Apparently from what i've found it's 31hp, and 37ft lbs. I'm wondering.......... What kind of power gain would you get from putting on a harley muffler (not sure which yet), rejetting the carb, and possibly a better air filter if there's a recommended one? I'm assuming it would be somewhat noticeable no? Any other relatively cheap mods for these bikes to pull a little more power, without sacrificing dependability? I can't decide if I want to keep, or sell my 04' next year. I like the bike in general, but it's a little small for me (i'm 6'), and just a bit underpowered for those longer trips. On the flip side, I only paid $2G for it, so perhaps I could mod it a bit and make something a bit more fun out of it. Thoughts? |
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Title: Re: Power adder....? Post by Serowbot on 09/15/12 at 17:57:25 Although it's rated 31hp,... if you dyno'd it,.. it would probably be more like 28 or 29hp stock... A Harley shorty and a K/N slip-in filter with rejet, will likely add 2 to 4 ponies... ... add, porting the exhaust to match the pipe (leave 90% of the torque hump in there, just smooth it)... and I'm at 34hp, and still around 37ftlbs... Noticeable,.. but not that impressive... the biggest gain is psychological from a much nicer exhaust tone... |
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Title: Re: Power adder....? Post by Blue04Savage on 09/15/12 at 18:26:38 Gotcha. Makes perfect sense. Thanks for the info Serowbot. I guess on a % basis that's a decent gain, but it's just making something slow a little less slow. lol After doing the exhaust, and rejet, did you still get much backfiring? What would a shop typically charge to rejet a carb on these bikes? Any idea? I wouldn't know how to properly do it. Thanks again |
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Title: Re: Power adder....? Post by Serowbot on 09/15/12 at 19:45:20 I get pops, and blats, on decel,.. but no backfires... occasional poof, on shutdown... I'm guessing a shop would charge $50 to $100 to dyno and rejet... ... but,... it's not that hard to change jets... and you can get a good idea of what you need to do from a few simple tests... ...if you like to learn,.. it can be fun... Here's a sorta' guide to what I generally do... ;)... Serowbot's carb tuning tips for beginners... (http://suzukisavage.com/cgi-bin/YaBB.pl?num=1309246277) |
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Title: Re: Power adder....? Post by justin_o_guy2 on 09/15/12 at 21:27:12 624C55451914734156414745200 wrote:
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Title: Re: Power adder....? Post by Blue04Savage on 09/15/12 at 21:57:52 Alright cool. I'll read through the link you posted serowbot. I've never worked on bikes, other than just doing oil changes, so this will be new to me. I just don't want to screw something up, and not realize it. Thanks again. |
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Title: Re: Power adder....? Post by justin_o_guy2 on 09/16/12 at 01:03:01 Yea, well,, I understand that, we all do, but Id just hafta stay in bed if I wasnt willing to take a chance on screwin something up. & you just might screw something up, too, but most things will unscrew. Havent seen anyone ruin their bike by trying to jet it. We have seen a couple engines ruined by "mechanics" at the shop putting oil filters in backwards. A small set of tools will save you enough $$$ to p[ay for them many times over, |
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Title: Re: Power adder....? Post by LANCER on 09/16/12 at 03:11:40 This engine responds very well to mod's that improve air flow (muffler) and correcting the air/fuel mixture which is very lean as set by the factory. This lean mixture, especially in the pilot fuel circuit, is largely responsible for the backfiring issue that plagues every LS650 rolling off the assembly line. The factory PR line on this issue is that "it's just the nature of a large single". Really ? ? Does the DR650 or KLR650 or the Honda 650 or any of the 650's from Europe backfire ? They are large singles too but for some reason don't seem to have this problem. Hmmmm. Backfiring is simply the result of an incorrectly jetted/tuned carb. With a HD dyna muffler in place of the stock muffler, changing the pilot jet to a #52.5 and a 152.5 main jet & then adjusting the pilot screw to richen the mixture will take care of the backfiring, improve power and make a noticeable difference in the riding experience. The white spacer mod on the jet needle will also improve performance but is a bit more difficult for a "first timer" doing carb work. It can be done later if you are not comfortable with it yet. Carb function: There is overlap but in general the following applies. Pilot jet: controls idle to 1/4 throttle Jet needle: controls 1/4 to 3/4 throttle Main jet: controls 3/4 to wide open throttle The tech section has lots of helpful info on doing these mod's. |
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Title: Re: Power adder....? Post by Blue04Savage on 09/17/12 at 11:51:17 Excellent. You all make very good points. I guess i'll just do it myself if I decide to keep the bike and do so. I'm not a "mechanical retard", but like I said i'm just hesitant to work on bikes since I haven't before. I heard somewhere (probably on here), that it's not uncommon to be able to go to a harley dealership, and say "hey, i'm looking for this muffler.....", and have them sell you a used one for real cheap. Is this correct? I understand that it would vary on the dealership. The last thing I was wondering is if the harley mufflers that have been recommended, by people on here for our bikes, are a quick slip on deal? Or is there need for mounting bracket modifications, and/or PITA adapter pieces? Thanks again! |
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Title: Re: Power adder....? Post by SALB on 09/17/12 at 11:57:29 Sound like you need to get acquainted with the tech section! 8-) http://suzukisavage.com/cgi-bin/YaBB.pl?num=1181745927 |
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Title: Re: Power adder....? Post by Bock on 09/17/12 at 12:16:44 4C414E4345521217200 wrote:
LANCER, I have a HORRIBLE backfire problem on my 2006 S40. I just bought it this summer (first bike). When I roll off quickly, I get a bang. I was told it's probably running too rich. I think that is true, because I'm getting around 30mpg on it. Not sure what I need to do to fix this problem. But shouldn't I be getting a lot better gas mileage than 30mpg? Thanks! |
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Title: Re: Power adder....? Post by LANCER on 09/17/12 at 15:46:22 Quote:
YESSSSSSSSSSSSSSSSSSSS A stock engine should get at least 50 mpg. Pull the carb and take off the float bowl and check the pilot and main jets...what size are they ? You should also pull out the slide and remove the jet needle to see if the white spacer is still there or has been modified. There is definitely something up with it and you need to know what's in the carb. That is square 1. |
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Title: Re: Power adder....? Post by Bock on 09/17/12 at 21:40:02 68656A6761763633040 wrote:
I'll have to do a little research on how to do this/understand what you are saying. I have never done any type of mechanical work. I'm hoping to start learning. |
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Title: Re: Power adder....? Post by LANCER on 09/18/12 at 13:36:08 193438305B0 wrote:
Do you have the Haynes manual for the bike ? If not get one. If you do then find the pages with the "exploded carb parts" and use that as reference as you read through the jetting/tuning info in the tech section of this forum. That is a good place to start your Savage/S40 education. There is quite a bit of stuff there. If you need further help let me know. |
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Title: Re: Power adder....? Post by Bock on 09/18/12 at 14:23:56 Thank you! |
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