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    Exhaust question

    I took a closer look at the 4-into-1 exhaust that came with the bike and I measured the header outlet diameter (2"3/4) and the muffler inlet diameter (3"). They seem a bit large since I was considering getting a different slip on at some time in the future. It looks like the muffler was welded together but is that the regular size for the header outlet? Here are some pics.






    #2
    Depends on the brand, different brands have different size outlets. V&H, years ago shipped theirs with 2 or 3 different restrictors, so you could change the outlet size. Bigger they were, more high RPM power, smaller the outlet, or restrictor, more bottom end torque. Yosh, I think was biggest, apprx. 3 in.
    1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

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      #3
      Originally posted by rphillips View Post
      Depends on the brand, different brands have different size outlets. V&H, years ago shipped theirs with 2 or 3 different restrictors, so you could change the outlet size. Bigger they were, more high RPM power, smaller the outlet, or restrictor, more bottom end torque. Yosh, I think was biggest, apprx. 3 in.
      So then I should be OK if I got a mid pipe that allowed me to use a smaller size slip on?

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        #4
        That looks like a Yosh pipe to me.... Someone spraypainted the can... Find another can, those things are the cats ass..

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          #5
          Originally posted by TheCafeKid View Post
          That looks like a Yosh pipe to me.... Someone spraypainted the can... Find another can, those things are the cats ass..
          What I would like to do is to go back to 4-into-2 and use these Termignoni cans....


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            #6
            Where did you find those and what bike/s are they supposed to fit?
            Their website is having some difficulties. I cannot find a dealer in the states.
            Got a link to someone that sells them?

            Thanks,

            Eric

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              #7
              Originally posted by 67fire View Post
              Where did you find those and what bike/s are they supposed to fit?
              Their website is having some difficulties. I cannot find a dealer in the states.
              Got a link to someone that sells them?

              Thanks,

              Eric

              Eric, they are on e-bay. I'm too worried about putting the bike together for now but I'll probably give them serious consideration when funds are more abundant.

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                #8
                They would probably sound great on your bike! I run an automotive glass-pack on my 1085 and it has a nice deep tone to it. Plus, it was cheap!

                Eric

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                  #9
                  Trying to make a ducati out of a gs?

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                    #10
                    Originally posted by mistertoadie View Post
                    Trying to make a ducati out of a gs?
                    Not at all. The twins are a breed appart (and that sound....). I just saw those pipes on e-bay and I thought they would look good on my GS.

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                      #11
                      I think I prefer the look of the dual exhaust better than just the one. Would it be possible to use the header that I have now (in the pic at top) and convert it into a 4-1-2?

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                        #12
                        Why not? A good pipe bender can even make the "Y" pipe.

                        Eric

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                          #13
                          Originally posted by 67fire View Post
                          Why not? A good pipe bender can even make the "Y" pipe.

                          Eric
                          That's what I was thinking. I even saw pre fabbed y-pipes are available. I was thinking there are plenty of stock pipes for sale and Sportster ones would look good on the GS.

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                            #14
                            The Ducati Sport Classic Sport 1000 has both pipes on the right side, stacked on top of each other.

                            I'd be checking the dimensions carefully before spending $500
                            1978 GS 1000 (since new)
                            1979 GS 1000 (The Fridge, superbike replica project)
                            1978 GS 1000 (parts)
                            1981 GS 850 (anyone want a project?)
                            1981 GPZ 550 (backroad screamer)
                            1970 450 Mk IIID (THUMP!)
                            2007 DRz 400S
                            1999 ATK 490ES
                            1994 DR 350SES

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                              #15
                              Originally posted by Big T View Post
                              The Ducati Sport Classic Sport 1000 has both pipes on the right side, stacked on top of each other.

                              I'd be checking the dimensions carefully before spending $500
                              Yes, I saw what they finally went for!!! I was thinking more of their shape and that they would look good on the GS. Then again I think the Sportster pipes might look good also....And those go for alot less.

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