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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Straight Pipe... /cgi-bin/YaBB.pl?num=1120508531 Message started by cain9580 on 04/17/05 at 20:59:40 |
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Title: Straight Pipe... Post by cain9580 on 04/17/05 at 20:59:40 I am starting a little project in turning my Savage into a chopper. I have never worked on engines, or naything for that matter, before. I replaced the stock muffler with a straight through pipe. I was wondering what would be a good carburator for under $100, and what should I do with the fuel/air mix to maximize HP? Thank you. |
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Title: Re: Straight Pipe... Post by WD on 04/18/05 at 03:17:54 Okay, here's the deal with hopping up a Savage. You can add a freeflowing exhaust like you already have. You can add a free or freer flowing airfliter, such as a K&N pod filter. Remove the emissions control (white) spacer and thin it down to half of stock thickness, and add a 152.5 or 155 main jet. Remove the idle mixture cover from the upper right side of the carb. Turn the air screw out 2 turns from stock, and reset the idle speed. You can get different carbs for the bike. Is it worth it? If you want to go faster than say 80 on the freeway, you bought the wrong bike. The bike is capable of higher speeds, but, the brakes, tires, and frame aren't designed for it. If you just want to dial out the "pop" on shutdown, just drill out the mixture screw cover and adjust the mixture. My bike has an open(ish) exhaust, the airscrew out two turns past stock, a dirty stock (original) airfilter, stock jets, and stock spacer. I pull down 70+mpg, and have run the bike up to 115 mph. Both are flukes, although one other bike has done 112 mph. Both speed and mpg are fine as is as far as I'm concerned. Go through the technical and general boards with a fine tooth comb. All the mods you could ever hope to do to a Savage are pretty well documented. Also check out the Heise forum if you haven't already, it has been online since 1998, many gurus there who have yet to migrate here. Happy tinkering. -WD FYI, you'll make more power if your bike has some backpressure, add a slip in baffle to your pipe, you can get them at any Harley shop, maybe even the authorized dealerships. |
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Title: Re: Straight Pipe... Post by klx650sm2002 on 04/18/05 at 07:30:32 115 mph = 7690 rpm Clive W :D |
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Title: Re: Straight Pipe... Post by bobo383 on 04/23/05 at 05:31:19 WD- I GOTS TO KNOW... How did you make 115? What were the flukey conditions? As a human being, you MUST let us know the story on that. You're still around to write about it so you must not have dropped it off a cliff to make 115... |
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Title: Re: Straight Pipe... Post by lancer on 04/23/05 at 08:34:13 You did not mention whether you have a baffle in your straight pipe...if not , you should. It will run better with a little back pressure, & soften the harsh sound. I much prefer a good performance muffler like the Supertrapp, etc, but even a sportster muffler will perform better than a straight pipe. But if you like the straight pipe look then that is your choice...it's all about our choices and what we like. If you want to keep the stock carb it NEEDS to be rejetted, at the very least a larger main jet and pilot jet. A jet kit is a good way to go since the contain larger main jets and a needle with adjustment groves to tune midrange...you will need to provide your own pilot jets since the kits do not have them. Add a K&N pod filter and you should be good to go. If you want more responsive performance than the stock carb you can always get an Edelbrock Quicksilver. A used one on ebay can be had for about $50 or so, if you are patient and watch the sales. The Edelbrock is very simple, it only has a needle, and that has a 30 click adjustment for fine tuning. It works good, is very responsive, EASY TO TUNE, and can be purchased cheap on ebay. This carb on a Savage uses the K-6 or 13-E needle, and you can get the needle from Edelbrock for $13. Either way, modify stock carb, or get an Edelbrock, the cost will end up being about the same...but the Edelbrock will perform better...AND NOT JUST FOR TOP SPEED, BUT THROUGHOUT THE ENTIRE RPM RANGE. It is all about choices, whatever floats your boat. |
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Title: Re: Straight Pipe... Post by bobo383 on 04/23/05 at 21:18:52 Almost thou persuadest me to try an Edelbrock. Already have an Eddie 4bbl on my Buick, and I love it as much as a Holley. Got an extra Eddie for the Sav? |
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Title: Re: Straight Pipe... Post by Oklahoma_Mike on 04/23/05 at 22:11:56 bobo383 wrote:
Give lancer a shout he gets them every now and then. I bought one from him I don't have it on yet but it is great shape. I will let you know how it goes. 8) |
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Title: Re: Straight Pipe... Post by WD on 04/24/05 at 01:03:50 Bobo, it's a closely guarded trade secret... actually I stripped it of everything it didn't need to run. Alcohol based racing fuel, 1.5 miles of speed build up. The speed wasn't a guess. Track end trap and police radars were within 1/2 mph of each other. I can still bury the needle without trying very hard. -WD |
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Title: Re: Straight Pipe... Post by lancer on 04/24/05 at 06:44:37 Sorry Bobo, no Edelbrocks right now. I do have some Amal Mark 2 round slides...a lot like the Mikuni and Keihin performance carbs. They are brand new, 38 mm, just the carb. They will need a throttle cable and the mount that bolts to the engine and/or adapter for mounting. If you are interested in one I would need $175 (did not get as deep a discount on these). I am setting up one on my Savage now to get the precise jetting worked out before I put up a sale ad on this site. I will probably put together a kit with carb, cable, mount, prejetted, K&N filter, et al. |
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Title: Re: Straight Pipe... Post by Mr 650 on 04/27/05 at 10:54:49 WD wrote:
Does that mean ya'll make your own? :) "Alcohol based" ...what else is in there? Nitro? PO? Vermouth? ;D |
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Title: Re: Straight Pipe... Post by Savage_Rob on 04/27/05 at 11:21:40 Vermouth is da debil. |
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Title: Re: Straight Pipe... Post by Mr 650 on 04/29/05 at 16:41:54 Vermouth is just a mixer, tequila is the debil. :P |
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Title: Re: Straight Pipe... Post by Savage_Rob on 04/30/05 at 13:14:23 You only wave the bottle of vermouth over the vodka for a martini. Never actually put it in the glass. |
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Title: Re: Straight Pipe... Post by WD on 04/30/05 at 15:36:03 mr650, I've got the recipe for do it yourself nitro blended fuel...I'll see if I can find it. 5% nitro ia about all the stock engine can take though. The alcohol based fuel was from a Shell racing pump. I could make my own, I've set up stills before... ::) -WD |
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Title: Re: Straight Pipe... Post by Mr 650 on 05/08/05 at 23:20:39 Always cool to meet folks into experimental fuels and beverage's 8) To get this topic sorta back on track, I swapped the Supertrapp's open end cone w/ a Flat cap and added 8 more. If memory serves the LS650 Trapp comes w/ 8 discs and I added 8 more = 16. Just as Supertrapp predicted there was a sort of flat or lean spot just as the carb came on to the needle jet w/ the open end cone. Now the bottom end feels stronger as I rode around this afternoon. The reason I switched was for inspection prior to tag renewal and I wanted to quiet the 650 and close the obvious open end. Well it closed the open end AOK, but I may need to remove some discs. The sound was reduced, but it is still closer to the open cap level than I expected and far from the stock pipe. ;D BTW; Got the pack w/ BOTH the round stainless cap AND the aluminum cap, 8 new discs,6 new bolts and copper antiseize on eBay for $30. They only sold 7 of 25 packs offered. Supertrapp 4" Aluminum Endcaps with Discs (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=35596&item=4546604109&rd=1#ebayphotohosting) http://i19.ebayimg.com/02/i/02/83/03/43_1_b.JPG http://i7.ebayimg.com/01/i/02/83/25/05_1.JPG |
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