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New member : 1981 GS1000G Aftermarket exhaust advice

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    New member : 1981 GS1000G Aftermarket exhaust advice

    Hello
    Great website.
    I would like to fit a set of 4 into 1 aftermarket pipes to my 81' GS1000G, as originals seem almost impossible to find. Delkevik advise they do not advertise a 4 into 1 for the G model as there is interference between the brake pedal and collector.
    I would appreciate anyone's experience with this problem or information on other exhaust manufacturers who do a system for the G model.
    Thanks
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    #2
    There are members here that have used the Delkevic on G series bikes. Salty_Monk being one, on his 1100G. It can be made to work, but you may need to fuss with muffler hanger points and a center stand stop. But, don't trust my memory, though, search here for more info...
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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      #3
      Gosh I love those paint jobs that other parts of the world got, on the 850 & 1000G's, ours, in the U.S. was sooo plain and bland compared to theirs. Great looking bike and good luck with the exhaust... Oh yeah, Welcome
      1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

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        #4
        Same frame as the 850 and my Delko with the megaphone fits but I had to make a short securing strap, drilled at just the right place to fit into the original exhaust hanger hole in the rear extension sub-frame. It's quite secure.
        The other option is just buy the downpipes from Delko and use another silencer. I made a Hardly one fit to start with, but the hanger strap was a totally different affair to the megaphone one.
        ---- Dave

        Only a dog knows why a motorcyclist sticks his head out of a car window

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          #5
          Delkevic makes good systems but don't trust their fitment guide. They build them for specific models and don't trial fit on others. Have you looked at the MAC systems. I believe this is what mine is - used Ebay purchase listed for a "Suzuki" - and the slip-on sit's a little lower in the rear. It is dimpled where the brake pedal pivot is so I could clock the slip-on.

          Pic for reference.

          Resized_20240317_130521.jpg
          Current:
          1993 ZX11 - 2nd build in progress
          1977 GS750 (710 is getting closer)
          1998 Kawasaki Voyager - selling
          1998 Chevy C2500
          1999 Rav4

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            #6
            Thanks for the information all. The odd OEM exhaust has come up for other models. Are the 850,1000 and 1100G all compatible re the head and frame?
            rphillips, this paint job is actually aftermarket. The fella I bought the bike from in 1990 had put a full Ninja fairing on with this scheme. Unfortunately I damaged the fairing, hence there being no headlight or front indicators. I have found most of what I need on Z1.

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              #7
              Well Piers, like I said, I like your paint. I just went back through past BOTM pictures and found relatively similar paint schemes in Oct 23, Aug 23, June 20, were 1000G's and April 09 was an 850G. Not sure, just figured OEM. All, for me, much better than we had over here.... Form reading these folks ideas, you'll have exhaust situated relatively easy.... Keep us updated.
              1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

              Comment


                #8
                Originally posted by Piers Pitcher View Post
                Hello
                Great website.
                I would like to fit a set of 4 into 1 aftermarket pipes to my 81' GS1000G, as originals seem almost impossible to find. Delkevik advise they do not advertise a 4 into 1 for the G model as there is interference between the brake pedal and collector.
                I would appreciate anyone's experience with this problem or information on other exhaust manufacturers who do a system for the G model.
                Thanks
                Hi Piers

                I have recently fitted a Delkevik 4 into 1 on my 1980 GS1000G. The rear brake pedal was close to the collector, but I modified the muffler bracket to lower the overall system by about 1.5 centimetres. The brakes are freshly overhauled, bled and pedal lock-stop adjusted. I have acceptable clearance between the brake pedal and collector.
                Last edited by Syd; 07-05-2024, 10:34 PM.
                Current Bikes
                1980 Suzuki GS 1000G
                1973 Suzuki GT 185 (The tiddler)
                "Live to die, die to live"

                Comment


                  #9
                  Awesome Syd, thanks for the feedback. Delkevick it is then..

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                    #10
                    Finished the bike a couple of months ago. It came out quite nicely I thought. The Delkevic pipe went on with a small 5 degree outward adjustment to the rear mounting bracket allowing for rear brake pedal clearance.. You will notice from the photos, I am missing the outer retaining springs. Unfortunately the collector came without the the spring lug. Delkevic were prompt in replacing the collector.
                    There are quite alot of non OEM parts which I sourced mostly from Z1. New bits are: Headlight, indicators, mirrors, seat cover, exhaust, front brake fluid reservoir. Rebuilt carbs, front and rear calipers and shocks. Oils, filters and tyres.
                    The bike runs beautifully, however if I don't start in prime, the number 3 cylinder takes a while to warm up, thereafter is fine. I am still trying to figure out this issue. Vacuum problems or valve clearances?
                    Thanks for the advice.​ IMG_1740 (6).jpg

                    Comment


                      #11
                      The V&H was an easy fit on my 1000G. As Ed says I had a Delkevic on the 1100G, I've got to think you can make it work.
                      1980 GS1000G - Sold
                      1978 GS1000E - Finished!
                      1980 GS550E - Fixed & given to a friend
                      1983 GS750ES Special - Sold
                      2009 KLR 650 - Sold - gone to TX!
                      1982 GS1100G - Rebuilt and finished. - Sold
                      2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!

                      www.parasiticsanalytics.com

                      TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

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