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  • #1

    exhaust choices

    Sorry if I screw up typing, I just spent a few hours in the garage and my hands just stopped short of bleeding. Needless to say MOST of the blue on my exhaust is gone. I got kind of curios about what an xs would sound like with straight pipes. since my number 2 header was off, I just reinstalled it offset so that it did not line up with the left side exhaust. BTW: stock exhaust system. Anyway, I cranked it and what a sound. I think with 4 headers, it would sound like my my friends chevelle. That was only one cyl. For my project bike, I am definitely going to run straight headers If I were to run with no exhaust, I think it would sound a lot better than an HD with no exhaust.
    119
    stock
    41.18%
    49
    headers
    3.36%
    4
    aftermarket 4-1
    39.50%
    47
    aftermarket 4-2
    15.97%
    19
    United States Merchant Marine Academy, Kings Point, NY
    If I can do it at 18 yrs old, anyone can
    "You know something, You can't polish a turd"
    "What are you rebelling against", "Well, what do you got?"
    Acta Non Verba
    Tags: None
  • #2
    You may play hell tuning it with open headers. You may end up owning a complete set of main jets. By complete set I mean 4 of everything between 110 and 180 or however big they make em. Maybe not, but I would think it would be pretty tough.
    Yamaniac
    '79 xs11 sf - WidowMaker, 750 final drive
    '80 xs1100 sg- ENEMY#1 parts bike no title(free)
    '79 f- frame and swingarm (and title)
    '82 yz 490- needs a cylinder, head, & new piston, etc. Got one for sale?
    '88 Honda cbr600- Running, finally! Training bike for swmbo, maybe a stunt bike for me eventually.

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    • #3
      "sounds" like fun
      United States Merchant Marine Academy, Kings Point, NY
      If I can do it at 18 yrs old, anyone can
      "You know something, You can't polish a turd"
      "What are you rebelling against", "Well, what do you got?"
      Acta Non Verba

      Comment

      • #4
        i went to mac 4 into 1's and while good, my stock setup that i just put back on rips,

        i think the mac had better low end and the stock pipe kick's it's butt, 4 grand to redline, go figure,

        i knew i was missing something and couldn't finger it out, but now i know,

        the power makes up for the added weight of the stock units and maybe stabilizes a top heavy feeling, thought i didn't like the looks of stock but yet again i changed my mine

        yamaha had it right
        "a good man knows his limitations" dirty harry
        History
        85 Yamaha FJ 1100
        79 yamaha xs1100f
        03 honda cbr 600 f4
        91 yamaha fzr 600
        84 yamaha fj 1100
        82 yamaha seca 750
        87 yamaha fazer
        86 yamaha maxim x
        82 yamaha vision
        78 yamaha rd 400

        Comment

        • #5
          When I got the Jardine 4 int 2 'spagetti' pipes I had to start it once before installing the mufflers. Darn loud.

          When I got my (RC Engineering?) 4 into 1 for my LG it came with no baffle in the muffler. Just a long empty megaphone can. I rode that for a week. Too loud but was fun for a bit. I scrounged a baffle from a wrecking yard and it quieted it a bit. By a bit, if the open can was 10 on a scale of one to 10 then the baffle brought it to 9.1.
          I finally added 8 SuperTrapp discs with endcap and it is now quite acceptable, about 4 on 1 to 10.
          Pat Kelly
          <p-lkelly@sbcglobal.net>

          1978 XS1100E (The Force)
          1980 XS1100LG (The Dark Side)
          2007 Dodge Ram 2500 quad-cab long-bed (Wifes ride)
          1999 Suburban (The Ship)
          1994 Dodge Spirit (Son #1)
          1968 F100 (Valentine)

          "No one is totally useless. They can always be used as a bad example"

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          • #6
            HobbyMan, I'm running a 4-2-1 on mine. It was a little tame for Maximan, but is working out pretty well for me.
            http://www.motad.co.uk/motad/images/...24808_m11y.jpg
            2010 Kawasaki Z1000
            1979 SF: Millennium Falcon, until this Saturday

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            • #7
              mac 4 into 1. no complaints.
              Casey
              1980 xs1100g "Frankenstein" (Now with a mind of his own!)

              "What do you mean I can't park this thing here?"
              "Shiny side up? I don't have a shiny side."

              Comment

              • #8
                Winning aftermarket pipes , po said they were sold from the yamaha dealer in town ...
                I had a weak rear mounting bracket , so had open headers after the tail pipe fell off in the road . it really rumbled .
                I would think on the road you would want the back pressure .
                drag racing might be a differant story ...

                Bob
                1979 XS1100 SPECIAL (under 18,000 miles Sold 5/12/2016
                1982 XJ1100 MAXIM(PARTS BIKE??)shows 14,000 miles ??? Up for sale whole or parts

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                • #9
                  I am running MAC 4-1's for several years now. Took a bit of tuning to get everything right. Bigger main and pilot jets, altered timing, light porting, etc. That is probably because they flow well. Though, they do not seem to have tons of grunt under 3000, after that it is a rocket.

                  Hobyman, if you are going to run straight pipes you are in for some pipe length tuning and your power band might tighten up based on the length of your pipes. Back pressure, exhaust pulse speed and all that stuff, ya know. Now, if you want it loud and fast in several RPM ranges, make a 4-1 with equal length tubes and try to vary the length of the collector. That way you can get the high end power as well as maintaining the scavenging effect provided by a collector.
                  Mike Giroir
                  79 XS-1100 Special

                  Once you un-can a can of worms, the only way to re-can them is with a bigger can.

                  Comment

                  • #10
                    I am runnin the stock headers 4-2 with the mufflers cut off and some 1 3/4 pipe in there place. I also installed a washer welded to a bolt inside the pipe for back pressure. Tunable at that!
                    all credit goes to trikerneil I believe he came up with the idea
                    Best exhaust sound ever. I call it Nascaresque
                    Last edited by audijunky; 04-24-2007, 08:53 AM.
                    "Beware of any man that owns a pig farm"
                    "Hence the meaning of the Saying,.. As greedy as a pig"
                    79 XS1100 modified standard
                    Chain Drive, Monoshock,extendend hand built swingarm, 200 rear
                    pod filters,150 mains,45 pilots
                    straight pipe 4-2 exhaust
                    new to me 05 Kawasaki zxr12r man does she fly
                    Owned 83 Honda V65 Magna
                    Owned 02 Vstar 650 classic
                    owned 85 Honda Shadow VT 700C

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                    • #11
                      Here's my aftermarket 4-1. Not sure of the brand. PO put them on. Anyone have a clue?
                      78 xs1100E standard

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                      • #12
                        exhaust

                        looking into suzuki bandit 1200 exhaust right now, will post findings soon....
                        MDRNF
                        79F.....Not Stock
                        80G......Not Stock Either....In the works

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                        • #13
                          Kudo's to you Mason!.....................glad to see that another XS'er realizes that Yamaha had it right for the whole RPM range, that includes intake too.
                          81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

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                          • #14
                            yes i went back to stock airbox and the power is undeniable

                            and i think i like quiet vs. noise, the deep grunts and gurgles is a i need
                            "a good man knows his limitations" dirty harry
                            History
                            85 Yamaha FJ 1100
                            79 yamaha xs1100f
                            03 honda cbr 600 f4
                            91 yamaha fzr 600
                            84 yamaha fj 1100
                            82 yamaha seca 750
                            87 yamaha fazer
                            86 yamaha maxim x
                            82 yamaha vision
                            78 yamaha rd 400

                            Comment

                            • #15
                              exhaust gasket size

                              Anyone know the xs11's exhaust gasket size in mm?
                              MDRNF
                              79F.....Not Stock
                              80G......Not Stock Either....In the works

                              Comment

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