custom, stainless exhaust??

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  • GS750
    Forum Mentor
    • Jun 2010
    • 189
    • Wide Bay, QLD Australia

    #1

    custom, stainless exhaust??

    I have been offered to have a set of custom made pipes (for free) by my local school.

    All they need is my old set (luckily I have a spare set too) and they will replicate the bends etc and will even make a custom muffler which they will replicate the flow from my tranzac.

    Thing is that the teacher said he really would like them to tig weld the pipes onto the 4-1 collector.
    Is this a good idea or would it cause some other problems??

    I currently have the older trazac pipes and a generic muffler fitted up to the bike but as I have only ever had full stainless on cars I was just wondering if anyone has had experience with full stainless on the GS's??

    does it inprove performance??
    Regards,
    Andy
    Queensland Australia

    http://i117.photobucket.com/albums/o...h_PIC00011.jpg
    GS750B (1977)
    Wiseco 850 kit, K&N pods, 4-1 transac, Custom 2 pak paint, IKON shocks, Custom L.E.D light boards (turn + stop/tail + dash)
  • SVSooke

    #2
    I would not have them weld the whole exhaust toghther.It's hard enough to get header pipes on without the muffler hanging on the back.

    Comment

    • Big T
      Forum LongTimer
      Past Site Supporter
      Super Site Supporter
      • Mar 2005
      • 12391
      • West Slope, OR

      #3
      There's no performance gain from stainless
      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

      Comment

      • MadDogGS

        #4
        Originally posted by Big T
        There's no performance gain from stainless
        Unless lighter material is used because stainless can be stronger than mild. And then the performance gains would probably be very small.

        Comment

        • makenzie71

          #5
          If they're going to "do you a favor" as an educational experience, have them do it correctly.

          A 4-1 collector is fine...most of us with aftermarket exhausts run 4-1 setups.

          The best thing they can do for you, though, is make separate exhaust manifolds.

          Look here to see what I mean:



          Originally posted by Big T
          There's no performance gain from stainless
          Random statement of the day award!

          Comment

          • makenzie71

            #6
            Stainless is more about longevity than performance. If it would hold up to the heat you could make it out of wood.

            Comment

            • GS750
              Forum Mentor
              • Jun 2010
              • 189
              • Wide Bay, QLD Australia

              #7
              Originally posted by makenzie71
              If they're going to "do you a favor" as an educational experience, have them do it correctly.

              A 4-1 collector is fine...most of us with aftermarket exhausts run 4-1 setups.

              The best thing they can do for you, though, is make separate exhaust manifolds.
              !
              Spoke to the guys today and they said that they would be able to do the 4-2-1 system instead of the 4-1 The issue is that I dont really want to have them stacked like yours, plus which pipes are best to combine at the first collectors?? Should it be 1&4 and 2&3??
              Regards,
              Andy
              Queensland Australia

              http://i117.photobucket.com/albums/o...h_PIC00011.jpg
              GS750B (1977)
              Wiseco 850 kit, K&N pods, 4-1 transac, Custom 2 pak paint, IKON shocks, Custom L.E.D light boards (turn + stop/tail + dash)

              Comment

              • makenzie71

                #8
                I wouldn't go for a 4-2-1 personally. You want your primaries to be as long as possible and there's not enough room to get a proper arrangement going. It would look interesting, though...if you go that route then yes, the ` and 4 and the 2 and 3 need to be the shared combos.

                Comment

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