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Anyone have experience with X-pipe exhaust systems?

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    #1

    Anyone have experience with X-pipe exhaust systems?

    Just got my 1980 GS1000G running this fall after sitting for 14 years under wraps in my garage. installed a 4-1 Jardine exhaust system I found on eBay and the bike is running well after cleaning the carbs, rejetting and installing a K&N filter in the stock airbox.
    Saw a listing on EBay for an X-Pipe exhaust system for $579.99.

    Error Page | eBay
    http://pages.ebay.com/link/?nav=item.view&alt=web&id=251223303747


    Is this pipe any good? The inventor,Monty Campbell, claims all other 4-1 systems are no good and of course his is the only one that increases power with no rejetting needed.

    He has also a link to his analysis.

    Scavenge
    http://www.x-pipe.com/Scavenge.html
    Campbell X-Pipe ™ -- Patent holder; Monty Campbell invented the first X-Pipe™ exhaust long before NASCAR discovered it. He has developed over 58 different designs including the X-Pipe™ Cross-OverTM (replaces equalizer/cross-over tubes), the X-Pipe™ HeaderTM (replaces 4into1s) and the CPU X-Pipe™ (computerized, dynamically reconfigerable) exhausts. The Campbell X-Pipe™ exhaust has been demonstrated to improve fuel economy (up to 21.4%), increase horsepower (up to 40%), and decrease emissions. It has been used on motorcycles, cars, truck, boats and airplanes.


    Is there any merit to this or just BS?
    Anyone try one or currently running one?
    Tags: None
    #2
    Show me an inventor that does NOT claim all his competitors' products are 'no good'.

    There does seem to be some merit in the benefits of the system, as there are many versions of it available for cars, trucks, bikes, etc. Whether it's worth about 50% more than a decent 4-into1 system, ... I don't know.

    .
    Last edited by Steve; 11-23-2014, 02:00 AM.
    sigpic
    mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
    hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
    #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
    #2 son: 1980 GS1000G
    Family Portrait
    Siblings and Spouses
    Mom's first ride
    Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
    (Click on my username in the upper-left corner for e-mail info.)

    Comment

      #3
      Back in the day these pipes were tested by one of the najor MC mags and found to be crap not delivering what they promised.

      Comment

        #4
        The link to his analysis on exhaust scavenging is interesting but I am no mechanical engineer to say if it's true or a bunch of baloney.
        No where does he show any dyno tests to prove his analysis, only a bunch of positive reviews from "happy" customers.
        His patents date back from the 1980's and I assume that he has been selling this product for years.
        Hard to believe that no one on this forum hasn't tested one or seen an X-pipe on someone else's bike.

        Also found another guy in California who goes by the name of Carpy (hotrodcarpy on ebay and www.cb750cafe.com) selling his version of the Yoshimura 4-1.
        Primarily started selling these for the old Honda 750's and is now making them for other bikes including the GS series.
        He is heavily invested into the cafe and bobber style. Some of his listings started out at $250 for a steel pipe plus $200 for ceramic coating.

        He is more interested in the sound and looks than claiming performance. Talked to him on the phone and he seems like a nice guy.

        Any comments of experience on both would be appreciated.

        Comment

          #5
          I remember a guy had a Murray xpipe on a dragbike. Then one day his rear tire went flat in the traps and he slid on that pipe couldn't stop he took it off after that.
          sigpic1982 gs750e 1186 oil cooled engine USD front mono shock rear
          1994 gsxr1100w
          1981 gs1260dragbike (this one I've owned for29yrs)

          Comment

            #6
            I looked into buying one for my 850 a couple of years back. The performance gains may have stacked up, but the draw back for me was having to drop the system for every oil change.
            :) The road to hell is paved with good intentions......................................

            GS 850GN JE 894 10.5-1 pistons, Barnett Clutch, C-W 4-1, B-B MPD Ignition, Progressive suspension, Sport Demons. Sold
            GS 850GT JE 1023 11-1 pistons. Sold
            GS1150ES3 stock, V&H 4-1. Sold
            GS1100GD, future resto project. Sold

            http://i155.photobucket.com/albums/s...s/P1000001.jpg
            http://i155.photobucket.com/albums/s...s/P1000581.jpg

            Comment

              #7
              Vance and Hines who developed the 4-into-1 exhaust's in '79 for our GS1000's and GS1100's

              1988
              "...Terry Vance retires having won 14 NHRA Top Fuel and Pro Stock Motorcycle titles together with a 101-21 career record in Pro Stock bike elimination, which ranks among the sport’s all time best in any class....

              1987
              "...NHRA Pro Stock Motorcycle Terry Vance runs the 1st ever seven second pass with a 7.990 Elasped Time at the Dallas Texas Nationals..."

              Read more here

              http://vanceandhines.com/history/

              Comment

                #8
                I know that on a V-8 powered car it increases the mid range power and also reduces the volume of the exhaust note making it quieter too.
                I may just have to see if I could make something similar for one of these GS'es one of these days. Hmmm.

                Comment

                  #9
                  Originally posted by GSX1000E View Post
                  I know that on a V-8 powered car it increases the mid range power and also reduces the volume of the exhaust note making it quieter too.
                  Note that on a typical V-8 engine, the firing order is not even, if you look at it from side to side.

                  Ignoring the actual cylinder that is firing and just looking at which side is firing, you will find that it is L-R-L-L-R-L-R-R.
                  The X-pipe will help even out the irregular pulses, then divert the flow through two outlet pipes.

                  An inline 4 has even-firing exhaust pulses, so there is nothing to compensate for. You still have a 4-into-1 pipe, but it immediately splits into two mufflers.

                  I think the only advantage would be the fact that you have two mufflers, which would not be as restrictive as a single one.

                  .
                  sigpic
                  mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
                  hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
                  #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
                  #2 son: 1980 GS1000G
                  Family Portrait
                  Siblings and Spouses
                  Mom's first ride
                  Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
                  (Click on my username in the upper-left corner for e-mail info.)

                  Comment

                    #10
                    monty cambell from many years gone by...mr. X pipe..
                    now i highly recommend a kerker KX2 if one can be found..
                    4-1-2 system...AWESOME power everywhere!
                    and has a sound that is different from any other pipes i used.

                    Comment

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